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2013新版八年级上同步知识讲解八年级上同步Unit 2 How often do you exercise学生版

2013新版八年级上同步知识讲解八年级上同步Unit 2 How often do you exercise学生版
2013新版八年级上同步知识讲解八年级上同步Unit 2 How often do you exercise学生版

人教版八年级英语下册第四单元知识点归纳总结.doc

Unit 4 why don’t you talk to your parents? 短语归纳 1.too much 太多(修饰不可数名词)out 闲逛 3.too many 太多(修饰可数名词复数)into a fight 争吵 5.call sb up 给某人打电话about 谈论 7.look through浏览back 归还 9.be angry with sb 生某人的气big deal 重要的事情 11.work out 解决;算出on with sb 与某人和睦相处 https://www.wendangku.net/doc/6416005699.html,municate with sb 与某人交流worried about 担心 ..... 15.be afraid of 害怕 ..... front of 在 ... 前面 17.not... any more 不再 ... much/many 那么多 https://www.wendangku.net/doc/6416005699.html,pete with sb 与某人竞争out 删除;删去 21.all kinds of 各种各样....with..... 比较;对比 23.in one ’ s opinion 依 ... 看down 调小 用法归纳 1.allow sb to do sth 允许某人做某事don ’ t you do sth? 为什么不做某事呢? 3.why not do sth ? 为什么不做某事呢?sb doing sth 发现某人在做某事 5.tell sb to do sth 告诉某人做某事to do sth 拒绝做某事 7.let sb do sth 让某人做某事to do sth 主动提供做某事 9.not....until.... 直到 .... 才 ... ’ s time to do sth该做某事了11.it +adj+to do sth 做某事是 ..... 的on doing sth 继续做某事 13.what do you think of...? 你认为 .... 怎么样? 语法点 1.Why don ’ t you+V....... ? 等提出建议的句型及常用的答语 2. 连词 until,so that 以及 although 引导的状语从句

人教版八年级英语上册第十单元知识点总结

教师讲义 副校长/组长签字:签字日期: 课题Unit 10 If you go to the party, you’ll have a great time! 课型□预习课□同步课□复习课□习题课 授课日期及时段2014 年月日 教学目的 重难点 教学内容 Unit 10 If you go to the party, you’ll have a great time! 一、书本重要语法点梳理 一、词组、短语: 1、go to the party 参加晚会, 2、have a great /good time 玩的开心, 3、stay at home,呆在家, 4、take the bus乘公交车, 5、tomorrow night明天晚上, 6、have a class party 开班级晚会, 7、have a class meeting 开班会, 8、half the class 全班一半人, 9、make some food 做食物, 10、at the party 在晚会上, 11、order food 预定食物, 12、potato chips薯条, 13、be angry with sb.对某人生气, 14、give sb some advice给某人建议/劝告, 15、travel around the world 周游世界, 16、go to college 上大学, 17、make(a lot of)money 挣钱/赚钱 18、get an education上学/受教育, 19、work hard 努力工作/努力学习, 20、a soccer player 一个足球运动员, 21、keep…to oneself 把…留给自己/独处/避免与人交往, 22、talk to sb.与某人谈话, 23、in life在一生中, 24、in the end 在最后, 25、be angry at/about sth 因某事而生气,

人教版英语八上单元unit 4 知识点

Unit 4 What’s the best movie theater? 1.重点词汇 comfortable, fresh, poor, close, worse, worst, cheaply, carefully, comfortably, beautifully, seriously 2. 短语归纳: 1.close to…离……近 2.clothes store 服装店 3.so far 到目前为止 4.10 minutes by bus坐公共汽车10分钟的路程 5.talent show 才艺表演 6.in common 共同;共有 7.more and more…… 越来越…… 8.all kinds of…… 各种各样的 9.make up 编造(故事、谎言等) 10.play a role in… 在……方面发挥作用/有影响 11.for example 例如 12.take…seriously认真对待…… 3. 必背典句: 1. -What's the best movie theater? 哪个是最好的影院? -Sun Cinema. 太阳影院。 2. I think Miller's is the best. 我认为米勒家最好。 3. I think 970 AM is pretty bad. It has the worst music. 我认为970AM太差了,它放世界上最差的音乐。 4. -How do you like so far? 现在你怎么认为? - It's fantastic. 太精彩了。 5. -Thanks for telling me. 谢谢告诉我这件事。 - No problem. 没关系。 6. How much is a meal? 一顿饭多少钱? 语法知识: (1)形容词的最高级 ①一般情况直接加-est

永磁同步电机基础知识

(一) PMSM 的数学模型 交流电机是一个非线性、强耦合的多变量系统。永磁同步电机的三相绕组分布在定子上,永磁体安装在转子上。在永磁同步电机运行过程中,定子与转子始终处于相对运动状态,永磁体与绕组,绕组与绕组之间相互影响,电磁关系十分复杂,再加上磁路饱和等非线性因素,要建立永磁同步电机精确的数学模型是很困难的。为了简化永磁同步电机的数学模型,我们通常做如下假设: 1) 忽略电机的磁路饱和,认为磁路是线性的; 2) 不考虑涡流和磁滞损耗; 3) 当定子绕组加上三相对称正弦电流时,气隙中只产生正弦分布的 磁势,忽略气隙中的高次谐波; 4) 驱动开关管和续流二极管为理想元件; 5) 忽略齿槽、换向过程和电枢反应等影响。 永磁同步电机的数学模型由电压方程、磁链方程、转矩方程和机械运动方程组成,在两相旋转坐标系下的数学模型如下: (l)电机在两相旋转坐标系中的电压方程如下式所示: d d s d d c q q q s q q c d di u R i L dt di u R i L dt ωψωψ?=+-????=++?? 其中,Rs 为定子电阻;ud 、uq 分别为d 、q 轴上的两相电压;id 、iq 分别为d 、q 轴上对应的两相电流;Ld 、Lq 分别为直轴电感和交轴电感;ωc 为电角速度;ψd 、ψq 分别为直轴磁链和交轴磁链。 若要获得三相静止坐标系下的电压方程,则需做两相同步旋转坐标系到三相静止坐标系的变换,如下式所示。 cos sin 22cos()sin()3322cos()sin()33a d b q c u u u u u θθθπθπθπθπ?? ?-????? ??=--- ? ???? ???? ?+-+? ? (2)d/q 轴磁链方程: d d d f q q q L i L i ψψψ=+???=?? 其中,ψf 为永磁体产生的磁链,为常数,0f r e ωψ=,而c r p ωω=是机械角速度,p 为同步电机的极对数,ωc 为电角速度,e0为空载反电动势,其值为 倍。

人教版八年级下册英语Unit4知识点

Unit4Whydon'tyoutalktoyourparents? 名词: deal交易member成员football足球relation关系pressure压力development发展communication交流opinion意见 cloud云skill技巧;能力 动词: allow允许explain解释compare比较guess猜测copy抄袭push推;推动argue争吵return归还cause造成 offer提出;给予complete竞争 communicate交流continue持续 形容词: wrong错误的proper正确的;恰当的quick快的 elder年级较大的clear清楚的crazy疯狂的nervous焦虑的typical典型的usual通常的 副词: instead代替;反而anymore再也不 secondly第二;其次perhaps可能;大概 代词: whatever任何 短语: lookthrough浏览cutout删除 bigdeal重要的事compare?with?比较 workout解决inone'sopinion依某人看getonwith和睦相处 知识点: 1、allowsbtodosth允许某人做某事 allowdoingsth允许做某事 Pleaseallowmetointroducemyself.请允许我做一下自我介绍。 Wedon'talloweatingintheclassroom.不允许在教室里吃东西。 2、What'swrong?=What'sthematter?怎么了?

What'swrongwithsb??=What'sthematterwithsb?某人怎么了 3、begoodforsth对??有益反义词:bebadfor对??有害 begoodtosb/sth对??友好 begoodatdoingsth擅长 Playingsportsisgoodforyourhealth.做运动对你的健康有益。Sheisgoodtoherclassmates.她对她的同学很友好。SheisgoodatspeakingJapanese.她擅长说日语。 4、bigdeal重要的事 It'snotabigdeal.这没什么大不了的。 5、arguewithsb与某人争吵 Shealwaysargueswithherboyfriend.她总是和她男朋友吵架。 6、communicatewithsb和某人交流/沟通Tomoftencommunicateswithhisfriendsbye-mail.Tom经常和他朋友用邮件沟通。 7、提建议句型: Whydon'tyoudosth?=Whynotdosth?你为什么不??? Shallwedosth?我们??好吗? Let'sdosth.让我们??吧。 You/Wehadbetterdosth.你(们)/我们最好做某事 You/Weshoulddosth.你(们)/我们应该做某事 You/Wecoulddosth.你(们)/我们可以做某事 Wouldliketodosth/sth.你想要??吗? What/Howaboutdoingsth???怎么样? 肯定回答: Goodidea./That'sagoodidea.好主意。 OK./Allright./Great.好。 Noproblem.没问题。 Sure./Ofcourse./Certainly.当然可以。 Ican'tagreemore.我非常同意。 Yes,Ithinkso.好的,我也这样认为。 否定回答: Idon'tthinkso.我不这样认为 Sorry,Ican't.对不起,我不能。

人教版八年级上册unit9-10知识点总结

Unit 9 一、短语 on Saturday afternoon在周六下午(具体某天的早、中、下午、晚上用介词on) prepare for为……做准备= studyfor......cometo theparty来参加聚会 go tothe/adoctor去看医生have the flu患感冒 help my parents帮助我的父母(help sb do sth/help out with sth) anothertime其他时间lastfall去年秋天 gotothe party去聚会hang out常去某处;泡在某处 the day after tomorrow后天the day beforeyesterday前天 have a pianolesson上钢琴课look after照看;照顾=take care of accept an invitaton接受邀请refuse=turn down an invitation 拒绝邀请 take a trip去旅行at the endof this month这个月末 bytheend of...到...为止see sbdosth/ see sbdoin gsth看见做了、正在做 look forward to doing盼望;期待the opening of……的开幕式/落成典礼 reply in writing书面回复go to theconcert去听音乐会 not…until直到……才meet myfriend会见我的朋友 visit grandparents拜访祖父母study for a test为考试学习 have to不得不toomuch homework太多作业 do homework做家庭作业goto the movies去看电影 afterschool放学后onthe weekend在周末

人教版八年级英语上册Unit4知识点

人教版八年级英语上册Unit4知识点重点句型: 1. It has the biggest screens. 2. The DJ choose songs the most carefully. 3. How do you like it so far? 到目前为止,你认为它怎么样? 4. Thanks for telling me. 5. Can I ask you some questions? 重点短语:

(1)movie theater电影院 (2)be c lose to…离……近 (3)clothes store服装店 (4)in town在镇上 (5)so far到目前为止 (6)10 minutes by bus坐公共汽车10分钟路程 (7)talent show才艺表演 (8)have….in common 有相同特征(想法、兴趣方面)相同 (9)around the world世界各地;全世界 (10)more and more……越来越…… (11)and so on等等 (12)all kinds of……各种各样的 (13)be up to由……决定 (14)not everybody并不是每个人 (15)make up编造(故事、谎言等) (16)play a role in…在……方面发挥作用 (17)play a role in doing sth. 发挥做某事的(18)no problem 没什么,别客气(19)for example例如 (20)take…seriously认真对待 (21)give sb. sth.给某人某物 (22)come true(梦想、希望)实现;达到 (23)Thanks for doing sth.因做某事而感谢。 (24)much+ adj./adv.的比较级…得多 (25)watch sb do sth.观看某人做某事 (26)one of+可数名词的复数……之一 (27)Can I ask you some…?

2014年八年级英语下册unit4知识点

Unit4 Why don?t you talk to your parents?(sectionA) 1.allow sb to do sth 允许某人做某事。 allow doing sth 允许做某事。allow sth 允许某事。 2.get into a fight with sb. 与某人吵架 have a fight with sb. / fight with sb. 3.not…until…直到…才… 4.Why don?t you do sth.?=Why not do sth. ? 5. find sb doing sth. 发现某人正在做某事 find sb do sth 发现某人做了、常做某事(hear/see/notice有以上相同的用法。) find sb./sth. adj. 6.look through 浏览 look around 到处看look up (字典中)查找 look out 小心;向外看look after 照顾;照看 7.give back 、return归还 give sth back (to sb) = return sth (to sb) /return (sb) sth“把某物归还给某人” 8.return回来;返回 return to spl.= come/get back to spl. “回到某处” = go back to spl. “返回某处” 9. write (a letter ) to sb.=write sb. a letter 给某人写信 10.be good at (doing sth.)擅长=do well in (doing sth.) 在某方面做得好 be good for 对---有益be good with 与---相处得好be nice/good to sb.对某人好 11.refuse to do sth.拒绝做某事 12.get on /along (well ) with sb 与某人相处(地好) get on /along (well)with sth. 某事进展(顺利) 13.argue with sb 与某人争吵 14. instead “反而,代替”(用在句首后加逗号/句尾) instead of sb./sth./d oing sth “代替,而不是……” https://www.wendangku.net/doc/6416005699.html,municate with sb.与某人交流 16.offer to do sth. 提出做某事 offer sb sth /offer sth to sb提供给某人某物(provide sth for sb或provide sb with sth ) 17.clear adj 清楚的,清晰的-- -”adj” clearly清楚地,清晰地 18. explain to sb. 向某人解释 19. Don’t be nervous. 不要紧张 feel/be/get nervous about…. 对…感到紧张 be nervous to do sth. 做某事紧张 Unit4 Why don’t you talk to your parents ? 1.允许;准许v________ 2.有毛病;错误的adj________ 3.哪儿不舒服____ 4.午夜;子夜n________ 5.快速查看;浏览___________ 6.猜测;估计v_________ 7.协议;交易n______ 8.重要的事_________ 9.成功的发展;解决_______ 10.和睦相处;关系良好_________ 11.关系;联系;交往n______ 12.交流;沟通n_________ 13.争吵;争论v_________ 14.云;云朵n_________ 15.年纪较长的adj_____ 16.代替;反而;却adv_____ 17.任何;每一pron__________ 18.焦虑的;担忧的adj_________ 19.主动提出;自愿给予v__________ 20.正确的;恰当的adj _______ 21.第二;其次adv____________ 22.交流;沟通v____________ 23.解释;说明v____________ 24.清楚易懂的;晴朗的adj_________ 25.抄袭;模仿;复制;复印v__________26归还;回来;返回v_______ 27.再也不;不再adv__________ 28.成员;分子n ___________ 29.压力n___________ 30.竞争;对抗v___________ 31.意见;想法;看法n ___________ 32.技艺;技巧n___________ 33.典型的adj___________ 34.美式橄榄球;足球n_______ 35.删除;删去__________ 36.快的;迅速的adj___________ 37.持续;继续存在v ___________ 38.比较v ___________ 39.比较;对比__________ 40.不理智的;疯狂的adj___________ 41.鞭策;督促;推动v ___________ 42.发展;发育;成长n ___________

人教版英语八年级下册unit10知识点总结

Unit 10 I ’ve had this bike for three years. Section A 1. for +一段时间表示动作持续一段时间,用于现在完成时 2.keep (kept ; kept)保留 *用作系动词,保持(某种状态),其后常接形容词作表语。 Please keep quiet / silent! 请保持安静! *用作实义动词 (1)保管;保存;保留Please keep these things for me while I am away. (2)赡养;饲养I used to keep sheep in my childhood. (3)坚持;继续接V-ing 形式作宾语。 If you keep practicing your spoken English, you'll soon make great progress. (4)阻止;阻碍keep sb/sth from doing sth 其中介词from 不能省略 The heavy rain didn't keep them from watching the football match. (5)保持其后常接复合宾语,表示使(某人或某物)保持某种状态或使某一动作继续。 ① keep + sb/sth + 介词If your hands are cold, keep them in your pockets. ② keep + sb/sth + 形容词These gloves will keep your hands warm. ③ keep + sb/sth + V-ing ,“让某人/ 某物一直……”,强调动作的持续性。 I'm sorry I've kept you waiting. 很抱歉,让你久等了。 keep a record 保持记录,keep in touch (with)保持与……的联系keep out (of) 把……关在外面keep up 保持;使……不能入睡keep one's / an eye on密切注视keep away (from) 离开keep in mind 牢记keep one's word 遵守诺言 3.bring back (v+adv) 使回想起;使回忆起 4.in need 需要;需求 in danger 在危险中in trouble在困境中in silence 在沉默中in good health 在好的健康状态中 A friend in need is a friend indeed. 患难见真情 5. no more ;not … anymore/ no longer ;not... any longer不再 词语同义词用法 no longer not… any longer强调时间或动作“不再延续” , 与延续性动词连用 no more not … any more强调数量和程度“不再增加” , 与非延续性动词连 用 位置区别:当修饰动词时,no longer通常置于be或行为动词前;no more一般置于行为动词后。not... any longer与not... any more常置于句末。 He can no longer walk. = He can’t walk any longer The little girl no more cried. = The little girl didn’t cry any more. 6.since 自从Since +从句(一般过去时),主句用现在完成时 He has studied very hard since he came to our school. since 与for 在现在完成时态中的用法 since 其后接时间点或时态为一般过去时的句子,表示某事是从什么时候开始的 I’ve been a soldier since two years ago for 其后接时间段,表示某事持续了多长时间I’ve been a soldier for two years. 练:His father the Party since 1978. A. joined B has joined C. was in D,has been in My father on business for two weeks. He’ll return in three days. A. is leaving B.left C. has left D. has been away 7. for 给;为了 介词for用法归纳

永磁同步电机基础知识

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