Grammar

Grammar

I．冠词（Articles）

冠词是一种虚词，它置于名词前，帮助说明名词的含义。冠词本身不能单独使用，在句中不重读。冠词分不定冠词(The Indefinite Article)和定冠词(The Definite Article)两种。

1. 不定冠词(The Indefinite Article)

a(an)是不定冠词，a用在以辅音开头的单词前，如a road，a boy；an用在以元音开头的

the是定冠词，在以辅音开头的单词前读/ /，在以元音开头的字母前读/ /。可数名词的单数、复数及不可数名词前均可使用定冠词。

2. 不用定冠词的情况（Zero Article）

单独使用名词而不用定冠词的情况在英语中也非常多，有的语法书上把这种现象称作零冠词（Zero Article）。

1. 现在进行时（The Present Progressive Tense）

（1）现在进行时表现在（说话瞬间）正在进行或发生的动作。例如：

The students are listening to the teacher.

He is watching TV now.

现在进行时也可表现当前一段时间内的活动或现阶段正在进行的动作。例如：We are working on a farm these days.

I am writing a book this month.

(2) 现在进行时是由助动词加动词形式构成的。以动词为例，现在进行时的肯定式、否定式、疑问式和简略答语如下：

2.一般过去时（The Simple Past Tense）

(1) 一般过去时表示过去某个事件发生的动作或存在的状态，常和表示过

去的时间状语连用，如yesterday,last night,in 1990,two days ago等。一般过去时也表示过去经常或反复发生的动作，常和often,always等表示频度的时间状语连用。例如：

I got up at 6:30 yesterday.

He always went to work by bus last year.

(2)以动词be,work和there be为例，一般过去时的肯定式、否定式、疑问式和简略式答语构成如下：

（2）动词过去式的构成分规则与不规则两类。规则动词过去式的构成和发音如下：

常见的不规则动词有：

am/is——was are——were become——became begin——began bring——brought buy——bought catch——caught come——came do——did eat——ate feel——felt find——found get——got give——gave go——went grow——grew have/has——had hear——heard know——knew make——made put——put run——ran say——said see——saw sit ——sat stand——stood take——took teach——taught tell——told writ e——wrote

3.There be结构

“There is/are+某物/某人+某地/某时”结构表示“某地/某时有某物/某人”。句子中的be(is/are)和后面所跟的名词在数方面必须一致。一般现在时基本句型如下：

is a pen and two books on the desk.There are two books and a girl in the room.

II．介词（Prepositions）

介词一般用于名词或代词前，表示该词语句中其他成分的关系。介词后面的名词或代词（若是人称代词，则要用宾格）称为介词宾语。介词和介词宾语合在一起构成介词短语。

1.时间介词（Prepositions of place）

其他表示时间的介词还有before,after等，例如：before breakfast/class/school,

after breakfast/class/school。

2. 地点介词（Prepositions of Place）

表示地点的介词很多，如at,in,on,near,next to,in front of,before,above,under,

behind,beside,between等等。此外，in the front of,in the middle of,at/in the corner of, at the back of等，也是表示地点的介词短语。但其中最常用的、同时也是最灵活的是at,in,on这三个介词。比如“在河里”可以说“in the river”，“on the river”；同样，“在学校里”也可以说“in school”或者“at school”。

at 表示一个点（或小地方）。如：

at your/No.3 Middle school at Huaxing Clothes Store

at home at New Park

at the pool at the House of Dumpling

on 表示一个表面。如：

on Center Street/Fifth Avenue on the beach

on the table/chair/dresser on the floor

on the wall

in 表示一个范围（或大地方）。如：

in Paris/Beijing/China in Class Five

in the water in the school magazine/the photo

in the park/supmarket in the backpack/bookcase

in the school play in the corner

要注意的是，学习表示地点的介词at,on,in的正确用法，关键是要把我从什么角度看空间中的位置。式比较下列三个句子：

They stood at the door and waited.他们站在门口等着。（站在门口那个点上）

He’s putting up a picture on the door.他正在把一副画贴到门上。（贴在门那个面上）There’s a hole in the door.门上有一个洞。（从立体的角度看门上的洞）

3. 其他介词

about 关于；对于from 从……；自从with 与……一起；附有

of ……的；属于……的to 向;到;对as 担任；象；当……时like 像

at 在;对着;以for 对于;为了;给……;以……为代价;(表示时间持续)…之久

Grammar(语法归纳)

初中英语学习材料 madeofjingetieji Grammar(语法归纳) 一、写出下列动词的过去式 1. be ________ 2. bring ________ 3. buy ________ 4. come ________ 5. find ________ 6. drive ________ 7. fly ________ 8. give ________ 9. go ________ 10. hear ________ 11. leave ________ 12. let ________ 13. make ________ 14. put ________ 15. sing ________ 16. read ________ 17. take ________ 18. teach ________ 19. spend ________ 20. cost ________ 二、用所给词的适当形式填空。 1. Tom and Mary _________ (come) to China last month. 2. Mike __________ (not go) to bed until 12 o’clock last night. So he _______ (get) up late. 3. My mother ___________ (not do) housework yesterday. 4. She watches TV every evening. But she ___________ (not watch) TV last night. 5. ________ your father ________ (go) to work every day last year? 6. The boy_______ (not go) to school yesterday. He _______ (be) ill in bed. 7. What _________ (make) him cry just now? 8. Last year the teacher ________ (tell) us that the earth moves around the sun. 9. There ___________ (be not) any hospitals in my hometown in 1940. 10. I was afraid when I _______ (hear) a whisper. 三、完形填空。 Can flowers sing? You must be 1 to find the answer is ‘YES’. And the plants can sing, 2 . Flowers are beautiful and they 3 nice. Most people 4 to plant them. If they can sing for us, it's really wonderful. In fact, the flowers or plants in vases really can sing. 5 can they sing? That's because there is a speaker system (音响系统) inside the vases . The speaker system uses the flowers or plants to make 6 . If you like the music or song very much, you can 7 the music or the song 8 the plants in your garden. Music and plants are 9 for you .Do you like to 10

Grammar作业布置(含答案)

Grammar构词法作业 第一节．完形填空（共20小题；每小题2分，满分40分） Jake Olson lost his left eye when he was eight months old because of a born cancer. __1__ it was controlled through treatments, it reappeared and __2__ the loss of his right eye. But after years of cheering for his favorite football team, Jake has __3__ the impossible dream. He's now a part of the team, despite his total __4__，playing the game not based on sight but on __5__. Being a __6__ fan of the USC Trojans, one of Jake's last __7__ before he lost his eye was to watch the team play at Notre Dame. His strong liking for the sport didn't go __8__ — former USC coach Pete reached the boy, inviting him to meet the __9__. Inspired by those players, Jake hoped to be __10__ in his school's football team. At first he didn't think he would be of any real __11__，but when he heard people's cheers for football players, his love for football strengthened. So Jake __12__ the coach, asking to join the team. The coach told him to __13__ the next season. So Jake spent his time practicing hard. __14__，he became a starter on the team in the next season. Having made his high school football team, it didn't seem too __15__ to do the same in college. Coach Steve agreed that Jake __16__ the requirements of the team. So Jake's dream came true. __17__ football, Jake is also a motivational speaker. “I went into football with the thought that I had nothing to __18__，” Jake said. “I really had no fear. Going through __19__ in life does make you stronger. Life's unfair, but it's __20__ me not to g ive up and keep fighting.” 1．A.Unless B．Though C．Only if D．Now that 2．A.backed off B．held back C．broke down D．led to 3．A.forgotten B．quitted C．realized D．ignored 4．A.blindness B．absence C．deafness D．innocence 5．A.ability B．guess C．feel D．imagination 6．A.responsible B．faithful C．careful D．temporary 7．A.chances B．promises C．courses D．wishes 8．A.unnoticed B．unsolved C．unreported D．unlimited

Grammar_1_名词

第1章名词 1.1 名词概述 名词表示人、事物、地点或抽象概念等的名称。英语名词可分为普通名词和专有名词两 大类。普通名词包括： ●抽象名词（abstract nouns）：beauty, fear, courage, charity, joy, etc. ●物质名词（material nouns）：air, soap, beef, etc. ●集合名词（collective nouns）：family, group, team, swarm, crowd, flock, etc. ●个体名词（individual nouns）：table, man, dog, book, etc. 专有名词包括人名、地名等，Tom, Mrs Smith, China, etc. 1.2 名词的数 1.2.1 什么是名词的数 名词的数，指名词的单、复数形式。英语名词有的有单数和复数之分，有的则没有。下 面介绍名词复数和复合名词复数的构成法。 1. 名词复数的构成法： ●一般在名词词尾加-s。dog-dogs, house-houses, gram-grams. ●以-o或-s,-sh, -ch及-x结尾的名词加-es构成其复数形式。tomato-tomatoes, kiss-kisses, watch-watches, box-boxes, bush-bushes. ●有些以-o结尾，是外来语或缩写名词, 则加-s。piano-pianos, dynamo-dynamos, photo-photos, kimono-kimonos. ●有些以-o结尾的名词,其-o前是元音字母则加-s。studio-studios, radio-radios.以-oo 结尾的名词只加-s。zoo-zoos。 ●以-y结尾的名词，且-y前是一个辅音字母，则把-y去掉，加-ies。baby-babies, university-universities, fly-flies, impurity-impurities.如果以-y结尾的名词，-y前是一 个元音字母，则直接加-s。boy-boys, donkey-donkeys. ●以-f或-fe结尾的名词，一般将-f，-fe去掉，加-ves。wife-wives, wolf-wolves, calf-calves.这类名词还有：life, knife, self, shelf, leaf, thief, sheaf, half等。名词scarf, wharf, hoof, handkerchief的复数形式或加-s或去掉-f加-ves，即scarfs或scarves, wharfs或wharves, hoofs或hooves, handkerchiefs或handkerchieves。也有些以 -f或-fe结尾的名词只加-s。cliff-cliffs, belief-beliefs, safe-safes, roof-roofs, chief-chiefs等。 ●有些名词以改变元音构成其复数形式。man-men, woman-women, goose-geese, foot-feet, mouse-mice, louse-lice, tooth-teeth等。child的复数为children, ox的复 数为oxen。 ●有些表示生物的名词，其复数形式与单数相同。fish-fish, sheep-sheep, deer-deer。 这类名词还有aircraft, means等。

Grammar主语从句专项练习进步(含标准答案解析)

主语从句专项练习 副标题 一、单句语法填空（本大题共17小题，共17.0分） 1.It doesn't matter ____you help me or not. I will try all the ways to finish the task. 2.____ annoyed me last night was the noise of the firecrackers from the neighbourhood area till midnight. 3.It?s known to all ________ the gun powder was first invented by the Chinese. 4.单句语法填空 （1）This is the first time we __________(see) a film in the cinema together as a family. （2）We were all __________(inspire) when we heard the news that the rescue team found another survivor. （3）Self-driving is an area _________ China and the rest of the world are on the same starting line. （4）________ interested Zhang Pingyu most was the longitude line at Greenwich. （5）You need to make some adjustments ________ the article before it is published. 5.___________ the old bus station should be replaced with a modern hotel is still under discussion. 6.The fact that the mainland of great Britain is made up of 3kingdoms is still unknown to many It______ still______ to many______ the mainland of great Britain is made up of 3kingd oms． 7.__________ we understand things has a lot to do with how we feel. 8.It is three days since they got lost. ______________ they’re safe is still unknown. 9.________surprise d me most was that she didn?t even know________ the difference between the two lies. 10.Generally speaking, ________we have seen seems more believable than ________we have been told. 11.___ (Whoever/NO matter who) breaks the law should be punished. 12.It is doubtful________ the government of that country can accept them as permanent residents. 13.________Barbara Jones offers to her fans is honesty and happiness. 14.________ there is life on another planet is almost impossible. 15.It's often the case ______ anything is possible for those who hang on to hope． 16.___________ they want to get now __________ (be) help.他想得到的是帮助。 17.________ (Whoever, Who) gains the most points wins the competition. 二、单句改错（本大题共10小题，共20.0分） 18.What China got the first place in the 2008 Olympic Gaines made the whole nation very

2019-2020同步外研英语选修七新突破讲义：Module 4 Section Ⅲ Grammar——时间状语从句和省略

Section Ⅲ Grammar ——时间状语从 句和省略 ②“The moment I heard it ，”he said ，“I knew it was a completely new kind of music.” ③The first time that rap artists recorded their music ，musicians recorded the backing tracks (the music without the 1.句①～⑤中黑体部分在句中引导的是时间状语从句，句⑥～⑦为省略句。 2.句④⑤为no sooner...than.../hardly...when...句式，表示 一、时间状语从句 在复合句中起时间状语作用的句子称为时间状语从句。时间状语从句常用when ，while ，as ，until ，since 或表示时间意义的名词短语等引导。 1．when ，while ，as 的用法

他父亲去世时他才九岁。 Jack was working in the lab when the power cut occurred.杰克正在实验室里工作，这时突然停电了。 They arrived while we were having dinner. 他们到时我们正在吃晚饭。 While I played the piano，my sister did her homework.我弹钢琴的时候姐姐在做作业。 As years go by，China is getting stronger and richer.随着时间一年一年过去，中国变得越来越富强了。 I saw my mother as I was getting off the bus. 我下公共汽车的时候看见了我妈妈。 [名师点津] when在be about to do...when...，be doing...when...，had done...when...，be on one's way...when...，be on the point of doing...when...等结构中，作“正在那时”讲，表示某个动作正在发生或刚刚发生，另一动作同时发生。 He was about to leave when someone knocked at the door. 他刚要离开就有人敲门。 [即时演练1]选词填空：when，while，as ①It's much easier to make friends when you have similar interests. ②While/When in Vienna he studied music. ③You will grow wiser as you grow older.

Grammar 代词

LESSON5 代词 一、学习目标 1.掌握代词的分类； 2.掌握代词的拼写； 3.掌握物主代词与人称代词的区分。 二、学习内容 1.代词的分类； 2.代词的拼写和用法； 3.物主代词与人称代词的区分。 三、重点难点 考点一：人称代词与物主代词 1、人称代词的用法 （1）人称代词的主格在句中作主语 I love my country.我爱我的国家。 She is a good student.她是一位好学生。 （2）人称代词的宾格在句中作动词、介词的宾语或表语。 I don’t know her.我不认识她。

（3）人称代词的语序 单数形式（二、三、一）you，he/she and I 复数形式（一、二、三）we，you and they 2、物主代词的用法 (1)物主代词分为形容词性物主代词和名词性物主代词。 His parents are both office workers. My name is Tom. (2)名词性物主代词常用来避免与前面已提及的名词重复，相当于“形容词性物主代词+ ” --This is my dictionary.Where is yours? --It’s over there,on the desk. My idea is quite different from hers . (3)名词性物主代词可用在of后面作定语，相当于“of+名词所有格” He is a friend of mine. 考点二：指示代词 1.this/these （1）近指 This is my pen. These are my books. （2）指下文要提到的事、 Please remember this:No pay,no gains. 2.that/those （1）That is her bike. （2）Those are my sheep. 3.打电话时用this介绍自己，用that询问对方。 This is Mike speaking. Who is that speaking. 4.that, those 常用在比较句型中（as...as同级比较，...than不同级别比较） The weather in Shenzhen is different from that in Beijing. The population of China is larger than that of Japan.

完整版Grammar主语从句专项练习含答案解析

主语从句专项练习 副标题 17.017分）小题，共一、单句语法填空（本大题共1.It doesn't matter ____you help me or not. I will try all the ways to finish the task. 2.____ annoyed me last night was the noise of the firecrackers from the neighbourhood area till midnight. 3.It?s known to all ________ the gun powder was first invented by the Chinese. 4. 单句语法填空1This is the first time we __________(see) a film in the cinema together as a family. ）（2We were all __________(inspire) when we heard the news that the rescue team ）（found another survivor. 3Self-driving is an area _________ ）（China and the rest of the world are on the same starting line. 4________ interested Zhang Pingyu most was the longitude line at Greenwich. ）（5You need to make some adjustments ________ the article before it is published.（）___________ the old bus station should be replaced with a modern hotel is still under 5.discussion. The fact that the mainland of great Britain is made up of 3kingdoms is still unknown to 6.many It______ still______ to many______ the mainland of great Britain is made up of 3kingdoms． __________ we understand things has a lot to do with how we feel. 7.It is three days since they got lost. ______________ theyre safe is still unknown. '8.________surprised me most was that she didn?t even know________ the difference 9.between the two lies. Generally speaking, ________we have seen seems more believable than ________we 10.have been told. ___ (Whoever/NO matter who) breaks the law should be punished. 11.It is doubtful________ the government of that country can accept them as permanent 12.residents. ________Barbara Jones offers to her fans is honesty and happiness. 13.________ there is life on another planet is almost impossible. 14.It's often the case ______ anything is possible for those who hang on to hope． 15.___________ they want to get now __________ (be) help.他想得到的是帮助。 16.________ (Whoever, Who) gains the most points wins the competition. 17.1020.0分）小题，共二、单句改错（本大题共What China got the first place in the 2008 Olympic Gaines made the whole nation very

2019年高中英语Unit5FirstaidSectionⅢGrammar_省略教案(含解析)新人教版

Section Ⅲ Grammar—省略 语法图解 探究发现 1．(You) Come in, please! 2．John is a lawyer, and his wife (is) a cleaner. 3. a．First degree burns turn white when (they are)pressed. b．If burns are on arms or legs, keep them higher than the heart, if (it is) possible. 4. a．He is the man(who/whom/that) you can depend on. b．There is no doubt that John’s quick thinking and the first aid skills (that/which) he learned at school saved Ms Slade’s life. 5．The boy wanted to play football in the street, but his mother did not allow him to (play football in the street)． 6. It shows (that) a knowledge of first aid can make a real difference. [我的发现] (1)例句1为简单句中的省略。 (2)例句2为并列句中的省略。 (3)第1组例句为状语从句的省略。当状语从句的主语和主句的主语指的是同一人或物，且由人称代词的主格担当，或当状语从句的主语为it，而且从句谓语中含有be动词时，可以把从句的主语和be动词一起省略。 (4)第2组例句为关系代词的省略。当关系代词在限制性定语从句中作宾语时可以省略。 (5)例句5为不定式的省略。有时可用不定式符号“to”来替代上文中出现的不定式。 (6)例句6体现的是当及物动词之后跟由连接词that引导的宾语从句时，that可以省略。 为了避免重复，或为了使句子更简练，在一些句子中常常省去一个或某几个成分，这种

grammar填空

Exercise for Grammar 1.The growing speed of a plant is influenced by a number of factors, most of ________ are beyond our control. 2.______________ has passed the test will get a prize. 3._________________ (show) around the Water Cube, we were taken to see the Bird’s Nest. 4.The last time we had great fun was _________ we were visiting the Water Park. 5.You will be successful in the interview _______ _______ _______ you have confidence and get well prepared. 6._______ ________ ________ I went to Japan, I was amazed at their efficiency of doing business. 7. A warm thought suddenly came to me ______ I might use the pocket money to buy some flowers for my mother’s birthday. 8.I failed in my exam and I found it no use _____________ (complain). 9.The flowers his friend gave him will die unless ____________ (water) every day. 10.The agreed with each other on the whole, but much remain __________________ (discuss) at the following meeting. 11.The party was successful, but we thought it a pity ______________ (not invite) you. 12.His _________ (puzzle) look indicated that he didn’t know the truth. 13.Shopping in Auchan usually leaves me ____________ (amaze). Why is there always such a huge crowd. 14.________ __________ I hear the song, it reminds me of my childhood. 15.________ __________ he tried his best, he still couldn’t satisfy his boss. 16.The local health organization is reported _______________ (set up) 25 years ago when Dr. Alice became its first president. 17.The trees __________ (blow) down in the storm have been moved off the road. 18.Choosing the right dictionary depends on _________ you want to use it for. 19.We can surely overcome these difficulties ______ ______ ______ we are closely united. 20.____________ (not realize) there was danger before her, Jane Goodall entered the thick bush to observe the chimps. 21.________ you made a promise, you should try to carry it out. 22.Sandy was caught __________ (cheat) in the exam, which surprised his parents. 23.Some pre-school children go to a day-care center, __________ they learn simple games and songs. 24.Some deer happened ______________ (look) for food when a tiger appeared. 25._________ carries animals into the country must hold a certificate issued by the exporting country or region. https://www.wendangku.net/doc/6b5892793.html,st Sunday in Carrefour I was about to check out when I found my pocket ___________ (steal). 27.Jack mad another wonderful discovery, which I think ________ (be) of great importance to science. 28.___________ you do, you must do it well. 29.The _______ (spoil) boy was crying _________ (ask) his father to buy the boy for him. 30.He is never discouraged, ____________ difficulty he may face.

Grammar主语从句 专项练习 (含答案解析)

精品 主语从句专项练习 副标题 一、单句语法填空（本大题共17小题，共17.0分） 1.It doesn't matter ____you help me or not. I will try all the ways to finish the task. 2.____ annoyed me last night was the noise of the firecrackers from the neighbourhood area till midnight. 3.It?s known to all ________ the gun powder was first invented by the Chinese. 4.单句语法填空 （1）This is the first time we __________(see) a film in the cinema together as a family. （2）We were all __________(inspire) when we heard the news that the rescue team found another survivor. （3）Self-driving is an area_________ China and the rest of the world are on the same starting line. （4）________ interested Zhang Pingyu most was the longitude line at Greenwich. 感谢下载载

Grammar1

Music Born in America语法学案 命制：魏淑慧审核：牟慧芳班组：姓名：组评：师评： 学习目标： ☆知识目标：巩固时间状语从句并归纳各种时间的表达法； ☆能力目标：认识省略现象. ☆情感目标：温故知新，学以致用。 （一）Adverbial clauses of time (时间状语从句) 一．常见引导词； when, while, as(当…时); as soon as, the moment, directly, immediately(一…就); until, till(直到); before(在..之前); after(在…之后); since, ever since(自…以来); once(一旦); whenever(任何时候); every time, each time(每次). 二．解析： ⑴when 的用法 ①When 引导的时间状语从句的谓语动词可以是延续性的，也可以是非延续性的，既可以是从句动作与主句动 作同时发生，也可表示从句的动作先与主句动作发生。 When he reached home, it was getting dark. (主从句动作同时发生) I shall tell her the good news when she comes. (从句动作先于主句动作发生) ②当when 引导的从句谓语动词是延续性的，when 类似于while. When (while) he was crossing the road, he was knocked down by a passing car. ③when 还可以做并列连词，表一个动作即将或正在进行的时候，突然发生了另外一件事。其意义为“那时”“这 时”，相当于at this\ that time We were having a meeting when someone broke into. We were about to go out, when it suddenly began to rain. ④when 还可表原因“既然” It was foolish of you to take a bus when you could easily walk there in five minutes. ⑵while的用法 ①while 引导的从句谓语动词为延续性的，表示“与……同时”“在……其间”从句常用进行时态，强调某一时间内主句和从句的动作同时发生。 Someone knocked at the door, when (while) I was watching TV. Strike while the iron is hot. ②while 有时可以表示前后两种情况进行对比，作为并列连词“而，却” He likes pop music, while I am fond of folk music. ③While 放在句首引导从句，译为“尽管” While I think you idea is good, I don’t quite agree with everything. ⑶as的用法 as 表示“当……时候”或“一边……一边”，as 的从句中可使用延续性动词，也可使用非延续性动词。 He sang as he was working. As time goes by, we have a better understanding of things around us. As I get older, I get more optimistic. (4) till, until 引导的时间状语从句 ①till 引导的时间状语从句主句的动词常是延续性的。而not…until 引导的时间状语从句主句的动词常是短暂性的 We will stay here till\until it stops raining. John did not announce the news till he was sure of it. ②Not until 置于句首时，主句的主语和谓语要倒装，表示加强语气。 Not until Mary had heard that sound was she really frightened. (5) as soon as, immediately, directly, once, the instantly, instant ly, no sooner……. than, hardly \scarcely……when 引导的时间状语从句，表示“一……就……” I came immediately I got your message. Once you lose confidence, you won’t be able to do the work well. Jack had hardly\scarcely seen me when he left the classroom. ※当no sooner, hardly, scarcely 置于句首时，主句要部分倒装. Hardly\scarcely had we gathered in the wheat when it began to rain. No sooner had we arrived at the station than the train left. (6) before 和since ①若表达“还未……就…; 不到……就，……才……，趁，还没来得急”时，需用连词before. We had sailed four days and four nights before we saw land . 我们航行了四天四夜才看到了陆地。 We hadn’t run a mile before he felt tired. 我们跑了还不到一英里他就累了。 Please write it down before you forget it. 趁你现在还没忘，请把记下来。 Before I could get in a word he had measured me . 我还没来得及插话，他就给我量了尺寸。 ②before 在从句中谓语动词不用否定式。 Before they reached the station, the train had gone. 他们（还没）到火车站以前，火车就开走了。 ③．It will be + 一段时间+ before… 多久之后才。 It will be half a year before I come back. ④在“It is + 一段时间+ since 从句”句型中，时间的计算一律从动作完成或状态结束时开始。从句动词是短暂性动词按原意思翻译，延续性动词按相反的意思翻译。 It is three years since the war broke out. 战争爆发以来三年了。 It is three years since he lived here. 他离开这里三年了。 （二）Ellipses (省略) 1. 简单句中的省略 1)省略主语