2020届高考英语(人教版)一轮复习必修三学案 Unit 5 Canada — “The True North”

(一)课前自主学习

Ⅰ.阅读单词——————知其意

1．continent n．洲；大陆

2．baggage n. 行李

3．harbour n. 海港

4．urban adj. 城市的；市镇的

5．downtown adj. 市区的

ad v. 在市区；往市区6．approximately ad v. 接近；大约

7．frost n. 霜；霜冻

8．eagle n. 鹰

9．multicultural adj. 多种文化的

10．polar adj. 极地的；近极地的

11．mist n. 薄雾

12．booth n. 公用电话间；货摊；售货亭13．buffet n. 自助餐；饮食柜台

14．bush n. 灌木(丛)；矮树(丛)

15．location n. 位置；地方

Ⅱ.重点单词——————写其形

1．chat v i.&n.[纵联1]聊天；闲聊

2．scenery n．[纵联2]景色；风景

3．measure v i.&v t. 测量；衡量；判定

n. 计量制；计量单位；措施4．aboard prep.&ad v.[纵联3]在(船、飞机、火车或公共汽车)上；

上(船、飞机、火车等)

5．within prep. 在……之内

6．broad adj. 宽阔的；广泛的

7．nearby ad v. 在附近

adj. 附近的；邻近的

8．pleased adj. 欣喜的；高兴的；愉快的

9．topic n. 话题

10．confirm v t. 证实；证明；批准

11._dawn n. 黎明；拂晓；破晓

12．quiz n. 测验；问答比赛

13．border n. 边界；国界；边沿

v t.&v i. 与……接壤；接近

Ⅲ.拓展单词——————通其变

1．surround v t.包围；围绕→surroundings n．(复数)周围的事物；环境→surrounding adj.周围的；附近的

2．slight adj.轻微的；微小的→slightly ad v.稍微；轻微地

3．tradition n．传统；风俗→traditional adj.传统的→traditionally ad v.传统地

4．impress v t.使印象深刻；使铭记→impressive adj.给人深刻印象的；感人的→impression n．印象

5．terrify v t.使恐怖；恐吓→terrified adj.恐惧的；受惊吓的→terrifying adj.令人恐惧的→terror n．恐惧→terrible adj.可怕的[纵联4]

6．wealthy adj.富有的→wealth n．财富[纵联5]

7．mix v t.&v i.混合；调配→mixture n．混合(物)；混合状态

8．distance n．距离；远方→distant adj.遥远的；远处的；远亲的

纵联1.众“说”纷纭

①chat v i.&n.聊天；闲聊②whisper v i.小声说；耳语

③inform v t.通知；告知④announce v t.宣告；宣布

⑤declare v t.宣布；声明⑥state v t.声明；陈述

⑦claim v t.声称；要求⑧broadcast v t.播报

纵联2.美丽“景色；风景”入画来

①scenery风景；景色②scene景色

③sight风景；名胜④view景色

⑤outlook景色；景致⑥landscape风景

纵联3.“火眼金睛”识别形近词

①aboard prep.&ad v. 在(船等)上；上(船等)

②broad adj. 宽阔的；广泛的

③abroad ad v. 在国外

④board v．&n. 登(飞机、车等)；木板

纵联4.不一样的“恐惧；可怕”

①terrifying令人恐惧的②frightening吓人的；可怕的

③alarming令人惊恐的④awful可怕的；惊人的

⑤horrible恐怖的⑥terrible可怕的

纵联5.后缀“-y”常见形容词聚焦

①wealth→wealthy 富有的

②thirst→thirsty 渴的；渴望的

③taste→tasty 美味的

④sleep→sleepy 困倦的

⑤guilt→guilty 内疚的

⑥health→healthy 健康的

⑦salt→salty 咸的

⑧hill→hilly 多山的

单元话题——人文地理

子话题水文和地貌

①geography n．地理②capital n．首都；省会

③steep adj.险峻的；陡峭的④stream n．小河；溪流

⑤ocean n．海洋⑥range n．山脉

⑦desert n．沙漠⑧basin n．盆地

⑨jungle n．丛林；密林⑩mineral n．矿物质

?coastal adj.近海的；沿海的?local adj.当地的

?native adj.本地的；本国的?remote adj.偏远的

?mountainous adj.多山的?landmark n．地标性建筑

[学考对接·活学活用]

高考采撷(一)阅读中的词汇应用

1．(2018·全国卷Ⅲ阅读C)The curves (曲线) of the buildings perfectly match the rise

and fall of hills, forming a unique view?.

Wang collected more than 7 million abandoned bricks of different ages. He asked the workers to use __?__ (tradition) techniques to make the bricks into walls, roofs and corridors. This creation attracted a lot of attention thanks to its __?__ (mix) of modern and traditional Chinese elements (元素)．

①写出本单元与加黑词意义相近的词：scenery

②用tradition的适当形式填空：traditional

③用mix的适当形式填空：mixture

2．(2015·安徽高考阅读E)Food serves as a form of communication in two fundamental ways. Sharing bread or other foods is a common human tradition that can promote unity and trust. Food can also have a specific meaning, and play a significant role in a family or culture’s celebrations or __?__ (tradition). The foods we eat — and when and how we eat them — are often unique to a particular culture or may even differ between rural (农村的) and urban?areas __?__ one country.

①用tradition的适当形式填空：traditions

②写出加黑词在句中的含义：城市的，其反义词为country“乡村的”

③选用适当的介词填空：__B__

A．about B．within C．around

高考采撷(二)写作中的词汇应用

(根据汉语及提示词翻译句子)

1．(2017·全国卷Ⅱ书面表达)给我印象最深的是他们的艺术技巧，显示出了不同凡响的才能。(impress)

What_impressed_me_most_are_their_art_skills,_in_which_they_showed_outstanding_t alent.

2．(2013·重庆高考写作)中国长江江豚(finless porpoise)的数量不足1 000只，因此我希望你们能采取一些有效措施来保护它们。(measure)

The_number_of_finless_porpoise_is_less_than_1,000,_so_I_hope_you_can_take_some_ effective_measures_to_protect_them.

(二)课堂重点释疑

1．surround vt.包围；围绕

[记牢]

①Surrounded (surround) by the forest, the village looks very beautiful.

②The surrounding (surround) villages have been absorbed by the growing city.

③Surrounding yourself with people who’ll provide you with support can be very beneficial.

[用准]surroundings常用复数形式，表示周围的具体的物质环境；而environment是集体名词，常用单数形式，表示对人的发展产生影响的自然环境或生活环境。

[写美]翻译句子

④总之，欢迎你来我们学校并希望你能很快适应新环境。

In_a_word,_you_are_welcome_to_our_school_and_I_hope_you_can_adapt_to_the_new _surroundings_soon.

2．measure vi.&vt.测量；衡量；判定n.计量制；计量单位；措施

[记牢]

①It’s generally acknowledged that education shouldn’t be_measured (measure) only by examination results.

②In the old days, my mother always made new clothes to my own measure with the Spring Festival approaching.

③Some villagers reported a huge snake, measuring (measure) over two metres long, was found dead in a nearby cave.

[用准](1)measure表示“措施，步骤”时，常用其复数形式。(2)measure表示“(测量后)有……长(或宽、高、大等)”时是系动词，用主动形式表示被动含义。

[写美]一句多译

该是我们采取措施阻止空气污染的时候了。

④It is high time that we took/should_take_measures to keep the air from being polluted.

⑤It’s time for us to_take_steps to stop the air from being polluted.

3．distance n．距离；远方；遥远；疏远v.拉开距离；与……疏远

[记牢]

单句语法填空

①We spotted them waving to us at a distance of 100 meters.

②There are lots of restaurants within walking distance.

③In the distance is a tall tree which is said to have a history of over 500 years.

单句改错

④Although Tom lives far away from his family, they don’t feel distance.distance→distant

[用准]对于“distance”的提问多用what，而不用how far或者how long。

[写美]翻译句子

⑤很难与她融洽相处，因为她总是与每个人保持一定距离。

It_was_difficult_to_get_along_well_with_her_because_she_always_kept_everyone_at_a _distance.

4．impress vt.使印象深刻；使铭记；给……留下极深的印象

[记牢]

①Even so, she impressed the world with her courage and strong desire to succeed.

②What impressed (impress) me most was that whenever he appeared in front of others he often wore a big smile.

③Your art skills are excellent and admirable, which leaves me a deep impression (impress)．

④(2018·浙江高考)I was_impressed (impress) to see my dad and Uncle Paul riding horses. They looked really cool.

⑤This is the most impressive (impress) building I have ever seen on my trip to Egypt.

[用准]impress不能用于impress sb. sth.结构，其间接宾语由介词on/upon引出。impress也不用于进行时。

[写美]句式升级

⑥I was impressed by the beautiful scenery and forgot to go back home in time.

→Impressed_by_the_beautiful_scenery,_I forgot to go back home in time.(分词作状语) [词汇过关综合训练]

Ⅰ.单词拼写

1．Chatting (聊天) for several hours, the two boys found that they had a lot in common.

2．The volunteers were from many different countries, but they quickly settled down in their new surroundings (环境)．

3．As far as I’m concerned, a man’s character can be measured_ (衡量) by the types of his friends with whom he stays.

4．Nancy’s first reaction to the news was a strange mixture (混合) of joy and anger.

5．When asked, the young man confirmed (证实) that he was going to study abroad next year.

6．The ground shook so violently that the little girl, who was at home alone, was terrified (恐惧的)．

7．A wealthy (富有的) old lady gave away many books to the middle school, which made all the students and teachers very happy.

8．When dawn (黎明) broke, we were still 50 miles from Canada.

9．Passengers checked their baggage (行李) before boarding the plane.

10．After taking some photos, they stopped at the top of the hill to admire the scenery (风景)．

Ⅱ.单句语法填空

1．It was her turn to make a speech, but she felt a mixture (mix) feeling of excitement and fear.

2．When the lost boy saw the smoke rising in the distance, he became excited immediately.

3．I came to realize that the key to success lay in trying to surround myself with creative people.

4．This city has a small population, only slightly (slight) over three hundred thousand.

5．Besides these traditional (tradition) activities, we have a wider range of choices such as travelling and visiting our relatives or friends.

6．The government has promised to take measures (measure) to help the unemployed.

Ⅲ.单句改错

1．He asked how the distance was between Beijing and Qingdao.how→what

2．The harbour was full of soldiers with baggages.baggages→baggage

3．Mr.Wang, a professor from Beijing, will make a impressive speech in the hall tonight.第二个a→an

4．I still think it terrified to find myself surrounded by large numbers of horses.terrified→terrifying

5．Looking back on his childhood, he is full of mixing feelings.mixing→mixed

Ⅳ.一句多译/同义句转换

1．(2017·全国卷Ⅱ书面表达)那些漂亮的剪纸艺术作品一定会给你留下深刻的印象。

①You will_surely_be_impressed_with those beautiful paper-cutting art works. (be impressed with)

②Those beautiful paper-cutting art works will_surely_impress_you. (impress v t.)

③Those beautiful paper-cutting art works will surely leave an impression on you.(impression n．)

2．除夕夜吃水饺是我们的传统。

①We eat dumplings on the New Year’s Eve by_tradition.

②It_is_a_tradition for us to eat dumplings on the New Year’s Eve.

3．The little girl is too shy and usually keeps her distance from others. →The little girl is too shy and usually keeps_others_at_a_distance.

(一)课前自主学习

1．rather_than与其；不愿；而不是2．settle_down [串记1]定居；平静下来；专心于3．be_famous_for 以……而闻名

4．manage_to_do 设法做

5．catch_sight_of 看见；瞥见

6．have_a_gift_for 有……天赋

7．in_the_distance 在远处

8．go_through 经历；穿过

9．at_dawn 在黎明；在拂晓

10．be_impressed_with_... [串记2]对……印象深刻

11．in_charge_of 负责

12．dream_of 梦想……

[同根短语串记]

串记1.“v.＋down”短语集锦

①settle down定居；平静下来；专心于

②pass down 使世代相传；流传

③bring down 使降低

④break down 分解；累垮

⑤cut down 削减；砍倒

⑥burn down 烧毁

串记2.“be＋过去分词＋with”结构一览

①be impressed with 对……印象深刻

②be satisfied with 对……满意

③be equipped with 配备有……

④be crowded with 挤满……

⑤be covered with 被……覆盖

1．go on a tour of 游览……

2．be on a trip to 在去……的旅途中

3．in the harbour 在海港

4．sail up 沿……向上游航行

5．aboard the train 登上火车

6．all the way 一路上

1．Rather_than take the aeroplane all the way, they decided to fly to Vancouver ...

她们不想一路乘飞机，而是决定先飞到温哥华……

2．It is so wet there that the trees are extremely tall, some measuring over 90 metres.

那儿的湿度很大，所以树都长得特别高，一些树高达90多米。

3．It’s too bad you can’t go as_far_as Ottawa, Canada’s capital.

很可惜你们不能一直走到加拿大的首都渥太华。

[学考对接·活学活用]

高考采撷(一)阅读中的短语(补全句子)

1．(2018·全国卷Ⅲ阅读C)Today, many Chinese people are learning Western styles and theories rather_than_focusing_on_Chinese_traditions (而不是关注中国的传统)．2．(2017·6月浙江高考完形填空)Now Alia waited for the war to end and dreamed_of (梦想) peace and a new library.

高考采撷(二)写作中的短语和句式

(补全句子/词汇替换)

1．(2018·全国卷Ⅰ书面表达)中国人喜欢用筷子吃饭，而不是像西方人那样用刀和叉子。(rather than)

Rather_than_use_knives_and_forks_as_Westerners_do,_Chinese like to eat with chopsticks.

2．(2017·全国卷Ⅰ书面表达)首先，设法阅读一些在中国文学中起重要作用的有关唐诗的资料。(manage to do)

At first, please manage_to_read_some_materials_about_poetry of the Tang Dynasty, which plays a significant role in Chinese literature.

3．(2016·四川高考书面表达)In my opinion, every summer I stay at my uncle’s house in the country for three weeks and enjoy a wonderful life there.(用本单元短语替换加黑词汇)_As_far_as_I’m_concerned

(二)课堂重点释疑

[短语集释]

1．settle down定居；平静下来；专心于

[记牢]

①In the past, he often dreamed of retiring in England and settling down in the country.

②Before we settle down to discussing (discuss) other things, I’ve a question to ask you.

[用准]settle down意为“定居；平静下来；专心于”时，为不及物动词短语；意为“使……平静下来”，为及物动词短语。

[写美]翻译句子

③父母希望我安定下来，尽快适应学校的新环境。

My_parents_hope_me_to_settle_down_and_adapt_to_the_new_environment_of_my_sc hool_quickly.

2．manage to do设法做

[记牢]

单句语法填空

①I managed to_rent (rent) a big enough house to take in a handful of people.

②That’s not a hard job. I’m sure I can manage it myself.

③Such a naughty boy is really hard to_manage (manage)．

对比记忆

④No matter what happened, I tried to finish my task on schedule. Luckily, with my teacher’s timely help, I managed to finish it ahead of time.(manage/try)

[用准]manage to do sth.相当于succeed in doing sth.，表示“成功地做了某事”，重在

结果；try to do sth.表示“尽力做某事”，重在动作，不一定成功。

[写美]补全句子

⑤尽管缺乏经验，但他设法按时完成了他的工作。

He managed_to_finish_his_work despite his lack of experience.

[句式集释]

1．rather than“与其；不愿；而不是”，连接两个并列成分

[教材原句]Rather_than take the aeroplane all the way, they decided to fly to Vancouver and then take the train from west to east across Canada.

[悟拓展例句]

(1)如果我不得不放弃其中一个，我会关掉电视而不是关掉我的手机。(一句多译)

①If I have to give up one of them, I would turn off the TV rather_than_switch off my cellphone.

②If I have to give up one of them, I would rather turn_off_the_TV_than_switch off my cellphone.

③If I have to give up one of them, I prefer_to_turn_off the TV rather than_switch off my cellphone.

(2)I don’t know any French people other_than you.

除了你，我不认识其他的法国人。

(3)I met him very late on Friday night, or_rather early on Saturday morning.

我在星期五深夜见到他，更确切地说是在星期六凌晨。

(4)He is more_than_our_teacher. He is also our best friend.

他不仅仅是我们的老师，也是我们最好的朋友。

[析用法规则]

[背写作佳句]

(1)(2018·全国卷Ⅰ书面表达)I’m more than delighted to receive your letter, asking about what customs you should pay attention to when visiting a Chinese friend.(开头句)

(2)It is those who are willing to give rather than receive that deserve to be respected.(要点句)

2．as far as“远至；就……而言；尽……所能”

[教材原句]It’s too bad you can’t go as_far_as Ottawa, Canada’s capital.

[悟拓展例句]

(1)His parents supported him as_far_as_they_could.

他父母竭尽全力支持他。

(2)Standing here, you can see as_far_as_the_foot_of_the_hill.

站在这里，你可以一直看到山脚下。

(3)As_far_as_I_know,_it is convenient to do shopping in that small town.

就我所知，在那个小镇上购物很方便。

[析用法规则]

as far as的常见用法：

as far as sb./sth. be concerned就某人/物而言

as far as the eye can see/reach 就视力所能及

as far as I can see 依我看

as far as I know 就我所知

[背写作佳句]

(1)As far as I am concerned, not only does outdoor exercise get us close to nature but also give us relaxation from heavy schoolwork.(要点句)

(2)As far as I can see, it is our responsibility to solve the problem.(要点句)

[词块、句式过关综合训练]

Ⅰ.选词填空

dreamt_of

engineer.

2．Rather_than stay at home during the holiday, they decided to take a short trip to a nearby town.

3．He managed_to get in touch with the lady who was in charge of the Hope Project.

4．Lily is a ten-year-old girl, who has_a_gift_for music — you know she has won two big prizes in the international music competitions.

5．Since you have settled_down in a new country, you have to make an adjustment to the new environment.

6．You can’t imagine how excited I was when I saw the ancient tower in_the_distance.

7．The driver didn’t catch_sight_of another car in time, so the accident happened.

8．In ancient times, people rarely travelled long distances and most farmers only travelled as_far_as the local market.

Ⅱ.根据提示补全句子

1．我总是愿意早开始，而不愿意把所有的事情都留到最后才做。(prefer, rather than)

I always prefer_to_start_early_rather_than_leave_everything to the last minute.

2．女性结婚时穿红色衣服是中国很多地方的传统习俗。(It is a tradition that ...)

It_is_a_tradition_that_women_get_married in red in most places of China.

3．就我个人而言，骑自行车是个很好的解决方法。(as far as)

As_far_as_I’m_concerned,_riding bicycles is a good solution.

4．经过了多次尝试，最后他终于拿到了通行证。(manage)

He tried to do it time and time again, and at last he managed_to_get_a_pass.

Ⅲ.分步写作

假定你是李华，你所在的城市正在参加大型城市文化旅游电视节目“魅力中国城”的评选活动。你计划在英文网站写封公开信，宣传你的家乡并号召更多的人为你的家乡投票。内容包括：

1．历史和文化；

2．环境和特点；

3．人民生活和城市状况。

注意：1.词数100左右；

2．可以适当增加细节，以使行文连贯。

参考词汇：魅力中国城Charming Cities in China

大型的large-scale

第一步：准确审题，理行文脉络，拟写作要点

I’m_writing_to_get_your_support_by_voting_for_my_hometown.

要点2－①：我的家乡在河南省。

My_hometown_is_in_Henan_Province.

要点2－②：在这座城市散步，你能感觉到浓厚的文化氛围。(culture atmosphere) Walking_in_the_city,_you_can_feel_the_strong_culture_atmosphere.

要点2－③：这里的人既友好又热心肠。

The_people_here_are_not_only_friendly_but_also_warm-hearted.

要点2－④：这座城市发展迅速。

The_city_is_developing_very_fast.

要点3：我希望你能为我的家乡投票。

I_hope_that_you_can_vote_for_my_hometown.

第二步：添加细节，文意更丰满，表达更亮眼

的评选活动。我写信是要得到你们的支持，为我的家乡投票。(complete)

I’m_Li_Hua.My_hometown_is_completing_in_the_large-scale_culture_tourism_TV_pr ogramme_“Charming_Cities_in_China”．I’m_writing_to_get_your_support_by_voting_for _my_hometown.

拓展要点2－①：我的家乡在河南省，是个具有悠久历史的美丽城市。(过去分词作状语，with 复合结构)

Located_in_Henan_Province,_my_hometown_is_a_beautiful_city_with_a_long_history.

补充要点2：这里有许多值得参观的旅游景点，许多名人曾经在这里生活过。(tourist attraction; worth)

There_are_many_tourist_attractions_to_worth_visiting_and_many_famous_people_on ce_lived_here.

拓展要点2－④：作为一个受欢迎的旅游城市，它发展迅速，每天吸引数以万计的游客。(attract, v ．-ing 形式作状语) As_a_popular_tourist_city,_it_is_developing_very_fast,_attracting_hundreds_of_thous ands_of_visitors_every_day. 拓展要点3：欢迎来我的家乡，并希望你能为我的家乡投票。(祈使句＋and ＋陈述句) Welcome_to_my_hometown_and_I_hope_that_you_can_vote_for_it.

第三步：连句成文，排语句顺序，重衔接过渡

结合要点，文章可分为三段来写。根据语篇表达中的逻辑关系在要点1中可添加连接词therefore ，在介绍家乡的状况时可添加连接词as far as I know ， what’s more 将要点巧妙衔接成文。 Dear_friends ， I’m _Li_Hua.My_hometown_is_completing_in_the_large-scale_culture_tourism_TV_pr ogramme_“Charming _Cities_in_China”．Therefore,_I’m _writing_to_get_your_support_by _voting_for_my_hometown. Located_in_Henan_Province,_my_hometown_is_a_beautiful_city_with_a_long_history.There_are_many_tourist_attractions_to_worth_visiting_and_many_famous_people_once_li ved_here.Walking_in_the_city,_you_can_feel_the_strong_culture_atmosphere.As_far_as_I_

know,_the_people_here_are_not_only_friendly_but_also_warm-hearted.What’s _more,_as_a _popular_tourist_city,_it_is_developing_very_fast,_attracting_hundreds_of_thousands_of_v isitors_every_day.

Welcome_to_my_hometown_and_I_hope_that_you_can_vote_for_it.

Yours_sincerely ，

Li_Hua

理清文体结构之(十五) 议论文之总分结构——找到论点、论证过程是关键

“总分结构”议论文最显著的特点是论点伴随事例在文章开头部分提出，事例往往是铺垫，是提出论点的前奏。随之而来的是论证过程。该论证过程中常常采用分层逐条论述。抓住了此类文章的结构特点，再结合题目要求，便能快速到原文中定位信息区间，从而正确解题。

[找论点、论证过程]

[高考典例] 2016·浙江卷·A 篇 [读文解题技法]

总(1～3段) ? [1]“Did you hear what happened to Adam last Friday ？” Lindsey whispers to Tori. 1.速读全文找论点 本文以事例开头，引

[抓关键词定位信息区间]

41．The author

at the beginning of the passage to ________. A ．introduce a topic

B ．present an argument

C ．describe the characters

D ．clarify his writing purpose

43．In the author’s opinion,

it ________.

A ．gives them a feeling of pleasure

B ．helps them to make more friends

C ．makes them better at telling stories

D ．enables them to meet important people

45．What does the author give in the passage? A ．Never become a gossiper.

B ．Stay away from gossipers.

C ．Don’t let gossip turn into lies.

D ．Think twice before you gossip.

[答案] 41.A 43.A 45.D

41．用对话――→定位第1、2段――→引出

第3段的论点，由此便知答案。

43．原因――→定位“影响2”，比对可得出答案。

45．建议――→定位第七段――→总结得出答案。

2018版高中数学必修三学案(25份)苏教版2(精品教案)(最新整理)

感悟随机抽样 抽样是统计分析的基础．在进行统计分析时首先要收集数据，但收集全部数据有时很困难，有时还带有破坏性，如灯泡使用寿命的调查、炸弹的可靠性的分析等，因此，“抽样”是很必要的．常用的抽样方法有简单随机抽样、系统抽样和分层抽样，下面一起体会一下这三种抽样方法． 一、简单随机抽样 最常用的简单随机抽样方法：抽签法和随机数表法． ()抽签法是常见的一种抽样方法，该法既保证了抽样的随机性，又保证了样本的代表性．()随机数表法：使用随机数表时，要注意随机数表中数的随机性，同时为了保证抽样的随机性，开始数的选取一定要是随机的，并且读数的方向可以任意事先约定，还要使操作方便易行．()适用范围：由于抽签法和随机数表法都要对个体进行编号，还要逐个抽取，所以抽签法适用于总体中个体的数目比较少，样本容量比较小时；随机数表法适用于总体容量较大，样本容量不大时． 在充分理解简单随机抽样方法后可得如下结论：①用简单随机抽样，从含有个个体的总体中抽取一个容量为的样本时，在整个抽样过程中各个个体被抽到的可能性相同；②简单随机抽样体现了抽样的客观性与公平性；③简单随机抽样的特点：它是不放回抽样；它是逐个地进行抽取；它是一种等可能抽样． 二、系统抽样 ()系统抽样广泛应用于生活实例中，也是不放回抽样．当总体中的个体数较多时，可将总体分成均衡的几部分，然后按照预先定出的规则，从每一部分抽取个个体，得到所需要的样本，这种抽样叫做系统抽样． ()系统抽样与简单随机抽样的联系与区别：假设要从容量为的总体中抽取容量为的样本，如果遇到不是整数的情况，可以采用简单随机抽样的方法从总体中剔除几个个体．由此可见，系统抽样和简单随机抽样是密不可分的，同时，系统抽样和简单随机抽样也有区别，系统抽样适用于总体中的个体比较多、且个体之间差异不太明显时，另外系统抽样中的规则是预先人

溶质的质量分数学案及检测

9—3溶质的质量分数（2）学案 例1：配制450g 质量分数为20%的稀硫酸，需用 98%浓硫酸多少毫升？（浓硫酸的密度1.84g/cm 3） 解：设需用98%浓硫酸的体积为V V ·98%·1.84 g/cm 3=450g ╳ 20% V=49.9mL 答：需用98%浓硫酸的体积为49.9mL 例2：某学生用36.5g 盐酸与一定量的水垢（主要成分是碳酸钙）恰好反应，产生了4.4g 二氧化碳气体，该盐酸溶质质量分数是多少？ 解：设参加反应的盐酸中溶质氯化氢的质量为X CaCO 3 + 2HCl === CaCl 2 + H 2O + CO 2↑ 73 44 X 4.4g X=7.3g 盐酸中溶质质量分数为： 答：该盐酸溶质质量分数为20% 73 X 4 4 4.4g = 7. 3g 36.5g ╳100%=20%

练习：下表是实验室所用盐酸试剂瓶上标签的部分内容，请仔细阅读后计算： （1） 欲配制14.6%的稀盐酸1000g ，需用这种盐 酸多少毫升？（计算结果精确到0.1） （2） 13g 锌与足量的稀盐酸充分反应，理论上可 制得氢气多少克？ 9—3溶质的质量分数（2）课堂检测 1、 用10mL 质量分数为98%的浓硫酸（密度为 1.84g/cm 3），稀释成质量分数为20%的稀硫酸 （密度为1.14 g/cm 3），应加多少毫升水？最后能得到稀硫酸多少毫升？ 2、配制300g 质量分数为10%的稀盐酸，需用质量分数为38%（密度为1.19g/cm 3 ）的浓盐酸和水各

多少毫升？

3、将一定质量的金属锌投入到63.7g 稀硫酸中，恰好完全反应，放出气体的质量与反应时间（t ）的关系如图所示。请你据此分析计算：反应结束后所得溶液中溶质的质量分数。 . . H 2 质量 （g 反应时间（t ）

2019-2020年高中人教版英语必修一教学案：Unit 5 Section Ⅰ(含答案)

Nelson Mandela, the first black president of South Africa who was a symbol (象征) of social justice (公正), passed away on Dec. 5, 2013. His death is a great loss to the whole world, since this modern hero, who used to fight for the black people, helped the black people get the same rights as white people, and began a school to help those who had little learning even during the time when he was put into prison. He was the one who always gave priority to (优先考虑) his nation. Nelson was a great man, but he was more than a great man. He was, is, and always will be a hero. In my view, being a hero means more than making great achievements. In fact, heroes are extraordinary (非凡的), because their hearts are filled with love for people. It is this love that makes them heroes, rather than great men. So this is the difference between great men and heroes. What makes a hero is not only one’s achievements, but also his selfless (无私的) love. With great achievements and selfless love, the person can become a true hero, just like Nelson Mandela. 2019-2020年高中人教版英语必修一教学案：Unit 5 Section Ⅰ(含 答案)

必修三unit1导学案3(最新整理)

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牛津译林模块五 Unit 2重点句型及语法学案

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人教A版高中数学必修三：2.1.1简单随机抽样 学案

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溶质的质量分数教学案(习题有答案)

【知识要点】一、溶质的质量分数 溶液的浓稀、有色溶液的颜色都可以粗略的表示一定量的溶液中含有溶质的多少，溶液中溶质的质量分数可以准确地表示一定量的溶液中含有溶质的多少。 1.定义：溶液中溶质的质量分数是溶质质量与溶液质量之比。 数学表达式： 特点：无单位、是个比值、一般不受温度的影响等。 饱和溶液溶质的质量分数的计算： （其中S为该温度下物质的溶解度） 2．配制溶质质量分数一定的溶液 以配制100g溶质质量分数为5%的氯化钠溶液为例分析： （1）计算：计算配制100g溶质质量分数为5%的氯化钠溶液所需氯化钠和水的质量。 （2）称量：用托盘天平称量所需的氯化钠。 （3）量取：用量筒量取所需的水（水的密度近似看作1g/cm3）。 （4）溶解：将量好的水倒入盛有称量好氯化钠的烧杯中，用玻璃棒搅拌，使氯化钠溶解。 （5）装瓶、贴签：把配制好的溶液装入试剂瓶中，盖好瓶塞并贴上标签，备用。 操作示意图可简单表示如下： 说明：如果用液体溶质来配制溶质质量分数一定的溶液，其步骤为：计算→量取→溶解→装瓶、贴签。想一想，这是为什么？ 二、关于溶质的质量分数的计算几种类型1．根据定义式的基本计算 （只要已知其中的两个量，就可以求出第三个量） 例如：20克硝酸钾完全溶解在60克水中，所得溶液中溶质的质量分数是多少？ 解：根据溶质的质量分数的定义可得 ＝＝25% 注意：饱和溶液溶质的质量分数的计算： （其中S为该温度下物质的溶解度） 2．溶液的稀释和浓缩问题的计算 根据稀释前后溶质的质量不变进行运算，无论是用水或用稀溶液来稀释浓溶液，都可计算。 （1）用水稀释浓溶液 设稀释前浓溶液的质量为m，其溶质的质量分数为a%，稀释时加入水的质量为n，稀释后溶质的质量分数为b%。则可得m×a%＝(m＋n)×b% （2）用稀溶液稀释浓溶液 设浓溶液的质量为A，其溶质的质量分数为a%，稀溶液的质量为B，其溶质的质量分数为b%，两溶液混合后所得溶液溶质的质量分数为c%。则可得A×a%＋B×b%=（A＋B）×c% （3）蒸发水进行浓缩 设浓缩前稀溶液的质量为m，其溶质的质量分数为a%，蒸发水的质量为n，浓缩后溶质的质量分数为b%。则可得m×a%＝(m-n)×b% 说明：如果采用加入溶质的方法使溶液中溶质的质量分数增大，那么可以根据：

人教版高一英语必修一unit5阅读

Unit5 Nelson Mandela---a modern hero Warming up & Reading学案 【学习目标】 1.深入理解课文，掌握课文中基础知识，培养快速阅读，整体理解的能力。 2.通过自主学习，合作共赢，达到对文章进行深层理解的目的。 3.了解曼德拉的传奇人生，学习他的优良品质。 【话题美文导读】 曼德拉曾在牢中服役27年，在其40年的政治生涯中获得了超过一百项奖项，其中最显著的是1993年的诺贝尔和平奖。他是南非首位黑人总统，被尊称为“南非国父”，而且是一位当代英雄。让我们细读下文，了解他不平凡的一生吧。 Nelson Mandela was born in Transkei, South Africa on July 18, 1918. His father was chief of a tribe(部落首领). Mandela was educated at University of Witwatersrand and qualified (符合资格) in law in 1942. He joined the African National Congress(议会, 国会）in 1944. In June 1961, the ANC considered his proposal(建议)on the use of violent actions and agreed that those members who wished to involve(卷入,参与) themselves in Mandela's campaign would not be stopped from doing so by the ANC. Mandela was arrested(逮捕) i n 1962 and sentenced to five years’ imprisonment(关押,监禁) with hard labour. In 1963, Mandela was brought to stand trial with them for plotting(策划) to overthrow the government by violence. On June 12, 1964, Mandela was sentenced to life imprisonment. From 1964 to 1982, he was kept at Robben Island Prison, off Cape Town. During his years in prison, Nelson Mandela’s reputation(名声) grew steadily. He was widely accepted as the most significant(重要的, 有意义的) black leader in South Africa. Nelson Mandela was released on February 18, 1990. After his release, he devoted himself wholeheartedly(全心全意地) into his life’s work, trying to achieve the goals he and others had set out almost four decades earlier. In 1991, at the first national conference of the ANC Mandela was elected President of the ANC 1918出生于南非特兰斯凯豪萨部落的酋长家庭 1944参加主张非暴力斗争的非国大 1961创建非国大军事组织“民族之矛” 1962因“煽动”和“非法越境”罪名入狱 1990南非当局迫于舆论无条件释放曼德拉 1993曼德拉获诺贝尔和平奖 1994曼德拉当选为南非第一位黑人总统 1999成为首位访华的南非国家元首 2009联大宣告7月18日为“曼德拉国际日” 2010曼德拉因曾孙女车祸缺席世界杯开幕式1. Guessing game: Who is he/she? ( 7 great persons) 2. Discussion: In your opinion, what qualities make a great person? 3. What’s the connection between Elias and Mandela? A. Strangers B. Friends C. Father and son D. Teacher and student Step2 Fast reading 1. What kind of passage does it belong to? A. essay B. biography C. report D. review It is written by The events happened to Elias: 1940 ：1946 ： 1948 ：1952 ： 1963 ： 2. How many parts can the text be divided into? Give the general idea of each part. Step3 Careful Reading 1. True or False (1). Elias met Nelson Mandela at school. ( ) (2). Elias was unable to read or write because he was lazy. ( ) (3). Nelson Mandela helped him keep his job. ( ) (4). Elias was happy blowing up government buildings. ( ) (5). Nelson Mandela thought violence was a good way to help black people. ( ) 2. Choose the best answer: (1). What disadvantages did Elias have in finding a job? A. He helped Nelson Mandela blow up the government building. B. He had poor education. C. He was very young. (3). Why did Elias help Mandela blow up some government building? A. Because he liked violence. B. Because it was not dangerous. C. Because he thought it was a way to make black people and white people equal. D. Because he wanted to be famous. (4). From Mandela’s saying, we can get a conclusion that A. Mandela wanted to break the law in a violent way in the beginning.

新课标人教版高中英语必修三 Unit1 精品学案

必修三Unit 1 Festivals around the world 单元要点

一、根据句子的意思翻译或按要求填词。 1. take place / happen / occur / come about / break out take place表示“发生、举行、举办”，一般指非偶然性事件“发生”，有某种原因或事先安排。 happen作“发生、碰巧”解，一般用于偶然或突发性事件。 occur作“发生、想到、突然想起”解，其意义相当于happen。

come about表示“发生、产生”，多指事情已经发生了，但还不知道为什么，常用于疑、否break out意思为“发生、爆发”，常指战争、灾难、疾病、火灾或者争吵等事件的发生1). Great changes have __taken place__ (发生) in our hometown during the past ten years. 2). It occurred to me that (我突然想起) I saw him on my way home yesterday. 3). I happened to see (碰巧看见) your sister crying on my way to school yesterday. I was in such a hurry that I had no time to ask what had happened to (介词) her? 4). When the Second World War broke out (爆发), Tom was only a newborn infant. 5). I’ ll never understand how it came about (发生) that you were late three times a week. 2. celebrate / congratulate celebrate“庆祝”，后面跟某个节日或物。 congratulate“祝贺”，一般搭配为congratulate sb. on (doing)sth.“祝贺某人某事”。Let’s hold a party to celebrate your birthday and at the same time congratulate you on your passing the examination. 3. gather / collect 这两词用不及物动词时用，常可互换，都表“ 聚集；聚拢”gather强调将分散的东西收集在一起。 collect对某些事物进行逐渐的收集，强调为了研究目的或爱好而做的有鉴别、有计划的收集 1). The dustmen collect the rubbish once a week. 2). A group of people like collecting stamps. 4. award / reward award n.“奖品”、“奖金”，指因为作出杰出成就而受奖win/get/receive an award for sth. vt.“授与”、“颁发”、“判给” award sb. sth. = award sth. to sb. reward n.“赏金”、“酬金”或一些非金钱的报酬as a reward vt. 表示“报答”、“酬谢”之意 reward sb. for sth. / reward sb. with sth. 1). They awarded John the first prize in the contest.

人教版高一英语必修一unit5知识点归纳和练习

Unit Five Nelson Mandela---a modern hero 词汇学案Words and Expressions Ⅰ.根据要求写出下列单词 1.写出下列单词的词义及反义词 1)mean ___________ ( 反) _________ 2）devote _________(形) _________ 3)unkind __________ ( 反) ________ 4) selfless_________(反) _________ 5)legal ________ ( 反) ________ 6）fair ________(反) _________ 2．构词法 A. 连线组成新的单词 B.构词法 1 hard a hearted 1 hope ____________ (形) 2 warm b going 2 equal _____________(副) 3 easy c working 3 self _____________(反) 4 suit d quake 4 friend _____________ (形) 5 over e coat 5 lazy ______________(名) 6 earth f case 6 free ______________(名) 7 head g line 7 reliable __________(动) 8 out h book 8 active __________(副) 9 man I kind 9 devote ______________ (形) 10 pass j line 3.写出短语 1. 失业_____________________ 2.事实上__________________ 3. 在危难，痛苦中__________________ 4.求助于，致力于______________ 5. 丧失勇气或信心__________________ 6. 当权；上台_________________ 7. 设立，建立______________________ 8. 被判处_____________________ 4. 重要单词短语讲解 1．quality n. 质量，品质, 性质 quantity量,数量,大量 【典型例句】 This new model is of high quality and is not expensive either. I prefer quality to quantity. Kindness is his best quality. 『过关练习1』 1) This shirt is made of cloth of a poor ____________ A. quality B. feature C. quantity D. characteristic 用quality 和quantity的正确形式填空。 2）Vicky has all the ___________ of a good manager 3) The photos are of poor _____________. 4) Tom drank a small _________of water. 2．willing be willing to do ＝be ready to do sth._____________________ 【典型例句】 Are you willing to help Are you willing to accept responsibility？你愿意承担责任吗？ 【类比延伸】 1)willing 指对于别人的建议和要求迅速并高兴的同意。如： The first requisite of a good citizen is that he shall be able and willing to pull his weight. 成为一个好公民的第一个要求事他能够并且乐意努力做好其分内的工作。 2)voluntary指没有强迫，自愿选择的活动。 She is a voluntary worker at the hospital.她是这家医院义务服务的。 『过关练习2』 1) I _____ that I have hurt her , but that’s not my real meaning A. willing to admit B. am willing to admit C. am willing to admitting D. willing to admitting 3. fight 1)vi. 打仗；战斗（常与with/ against连用）；打架，争论 2)n. 战斗；打架；争论 【典型例句】 People often have to fight for their liberty. 人们往往不得不为自由而战 We must fight the government’s education policy. （比喻）我们必须同政府得教育方针进行斗争。 The two boys had a flight. 【拓展】 fight +n. 与……..作战/ 打架 fight for 为了……..而作战 fight against 与…….作战/斗争 fight with 与…作战/与…并肩作战 fight about/over 因…….而争吵/打斗 用上面的短语填空 1)They told the workers to their rights.

【2020最新】人教版高中数学必修三学案：1

教学资料范本 【2020最新】人教版高中数学必修三学案：1 编辑：__________________ 时间：__________________

【学习目标】 ①知识目标：理解书中介绍的中国古代的三个问题的算法。 ②能力目标：通过算法的Scilab 程序，使学生初步具备编程能力的思想。 ③情感目标：通过阅读教材和了解算法思想，体验中国古代数学的伟大，培养学生的爱国之情。 【自主学习】 1、 求两个数的最大公约数的方法有两种，分别是_________________和_______________。 2、 所谓“割圆术”，是用____________________去无限逼近圆周并以此求___________的方法。 3、 阅读教材p36页《我国古代数学家秦九韶》，理解秦九韶算法的步骤。 【典例分析】 例1 求132与143的最大公约数。 跟踪练习 求下列两个数的最大公约数：（1）8251，6105 （2）1480，480 例 2 用秦九韶算法求多项式在x=2时的函数值。 143)(2367+-+-=x x x x x f 【快乐体验】 一、选择题 1.用秦九韶算法求多项式在=－1.3的值时，令；； …；时，的值 为（ ） 654322.5666.38.135.02)(x x x x x x x f +-+-++=x 60a v =501a x v v +=056a x v v +=5v A.－9.8205 B.14.25 C.－22.445 D.30.9785 2.数4557、1953、5115的最大公约数是（ ）

A.31 B.93 C.217 D.651 二、解答题 3.用等值算法求下列各数的最大公约数. （1）63，84； （2）351，513. 4.用辗转相除法求下列各数的最大公约数. （1）5207，8323； （2）5671， 10759. 5.求三个数779，209，589的最大公约数. 6.用秦九韶算法求多项式在时的值. 5365127)(2345-+--+=x x x x x x f 7=x 【反思回顾】 总结今天这节课的内容，你收获了哪些思想方法？

最新m7u3译林牛津英语模块七第三单元project学案(1)讲课教案

主备人：审核人：用案人：用案时间：NO. 课题：Module7 Unit3 Project(1)（第13课时） 学习目标1. Learn about two search services and what should be ta ken into consideration while researching on the Internet. 2. Use the Internet to do research on a topic by using the information and instructions in the text. 学习重点Learn to use some language points, and improve their overall ability. 学习难点Make a poster explaining how they have searched and what they have found. 课堂类型Project新授课总课时数 2 periods 学习过程用案人个案补充 【问题导引】 一、自主复习project部分的词汇知识，试读project课文并弄懂其大意。 二、认真阅读P46-47的课文后完成下表。 The Internet has enjoyed increased popularity among people all over the world. Therefore, doing online is common among net users. There are some tips you can follow to get satisfactory results. First of all, before you get down to searching information, you should . a search service between search engines and subject directories. Search engines can show you the pages that contain the word(s) you have typed in. Subject directories are by subjects and provide information that has been . by people. Secondly, when searching online you must take the following into . Is the up to date? Is it correct? Usually you have to other web pages to it. How to type the key words? Try to use some , such as “+”and “-” to make your search more accurate. Thirdly, after finding the information, do not copy the words just as you found them. This is cheating and is . The right thing you should do is to write an of the information in your own words and never forget to a list of the websites you have referred to when your report is finished. 【语言点学习】 三、短语翻译。

人教版高中数学-必修三学案 3.2.1古典概型(1)

.§3.2 古典概型 3.2.1 古典概型(一) 【明目标、知重点】 1．了解基本事件的特点； 2．理解古典概型的概念及特点； 3．会应用古典概型概率公式解决简单的概率计算问题． 【填要点、记疑点】 1．基本事件的特点 (1)任何两个基本事件是互斥的； (2)任何事件(除不可能事件)都可以表示成基本事件的和． 2．古典概型的概念 如果某概率模型具有以下两个特点： (1)试验中所有可能出现的基本事件只有有限个； (2)每个基本事件出现的可能性相等； 那么我们将具有这两个特点的概率模型称为古典概率模型，简称古典概型． 3．古典概型的概率公式 对于任何事件A ，P (A )＝A 包含的基本事件的个数基本事件的总数 . 【探要点、究所然】 [情境导学] 香港著名电影演员周润发在影片《赌神》中演技高超，他扮演的赌神在一次聚 赌中，曾连续十次抛掷骰子都出现6点，那么如果是你随机地来抛掷骰子，连续3次、4次、…、10次都是6点的概率有多大？本节我们就来探究这个问题． 探究点一 基本事件 思考1 抛掷两枚质地均匀的硬币，有哪几种可能结果？连续抛掷三枚质地均匀的硬币，有 哪几种可能结果？ 答 (正，正)，(正，反)，(反，正)，(反，反)；(正，正，正)，(正，正，反), (正，反，正)，(反，正，正)，(正，反，反)，(反，正，反)，(反，反，正)，(反，反，反). 思考2 上述试验中的每一个结果都是随机事件，我们把这类事件称为基本事件．在一次试 验中，任何两个基本事件是什么关系？ 答 由于任何两种结果都不可能同时发生，所以它们的关系是互斥关系．

思考3在连续抛掷三枚质地均匀的硬币的试验中，随机事件“出现两次正面和一次反面”，“至少出现两次正面”分别由哪些基本事件组成？ 答(正，正，反)，(正，反，正)，(反，正，正)；(正，正，正)，(正，正，反)，(正，反，正)，(反，正，正)． 例1从字母a、b、c、d中任意取出两个不同字母的试验中，有哪些基本事件？事件“取到字母a”是哪些基本事件的和？ 解所求的基本事件有6个，A＝{a，b}，B＝{a，c}，C＝{a，d}, D＝{b，c}，E＝{b，d}，F＝{c，d}; “取到字母a”是基本事件A、B、C的和，即A＋B＋C. 反思与感悟基本事件有如下两个特点： (1)任何两个基本事件是互斥的； (2)任何事件(除不可能事件)都可以表示成基本事件的和． 跟踪训练1做投掷2颗骰子的试验，用(x，y)表示结果，其中x表示第一颗骰子出现的点数，y表示第2颗骰子出现的点数．写出： (1)试验的基本事件； (2)事件“出现点数之和大于8”； (3)事件“出现点数相等”； (4)事件“出现点数之和等于7”． 解(1)这个试验的基本事件共有36个，如下：(1,1)，(1,2)，(1,3)(1,4)，(1,5)，(1,6)，(2,1)，(2,2)，(2,3)，(2,4)，(2,5)，(2,6)，(3,1)，(3,2)，(3,3)，(3,4)，(3,5)，(3,6)，(4,1)，(4,2)，(4,3)，(4,4)，(4,5)，(4,6)，(5,1)，(5,2)，(5,3)，(5,4)，(5,5)，(5,6)，(6,1)，(6,2)，(6,3)，(6,4)，(6,5)，(6,6)． (2)“出现点数之和大于8”包含以下10个基本事件：(3,6)，(4,5)，(4,6)，(5,4)，(5,5)， (5,6)，(6,3)，(6,4)，(6,5)，(6,6)． (3)“出现点数相等”包含以下6个基本事件：(1,1)，(2,2)，(3,3)，(4,4)，(5,5)，(6,6)． (4)“出现点数之和等于7”包含以下6个基本事件：(1,6)，(2,5)，(3,4)，(4,3)，(5,2)，(6,1)． 探究点二古典概型