九年级上学期英语期中考试知识点
牛津译林版九年级英语上册期中复习重点
牛津译林版九年级英语上册期中复习重点9A期中复习1.pay attention to your pronunciation , pay attention to recycling to protect the environment2.take notice of him , I noticed him sleeping in class the other day.3.devote some time to sth. = spend some time on sth.He devoted himself to teaching = He was devoted to teaching.4.正反义词间的转换not patient = impatient , finish the work incorrectly5.believe in sb. = trust sb.6.名词单复数的转变：make a speech = make speeches7.there is nothing wrong with … = there isn’t anything wrong with…8.主动和被动间的转化do sth. = sth be done9.n. – adj. – adv. 间转换peace – peaceful – peacefullysadness – sad – sadlyhappiness – happy -- happily10.prefer to do sth. = would rather do sth.prefer doing to doing = would rather do than do11.cheer you up = make you feel happy12.make you remember sth. = remind you of sth.13.be of some help to you = be helpful to yoube of value = be valuable be important = be of importance14.make it easier to do sth. = do sth. more easilymake it easy to do sth. = do sth. easily15.make a decision/decisions = decide to do sth. = make up one’s mind to do sth.16.though/although A, B. = A, but B…because A…., B…. = A…., so B….because＋句子＝because of doing / sth.17.suggest that +句子, suggest doing ——advise sb. to do sth.many suggestions = much advice18.the cause of … = the reason for …19.work out the problem = solve the problem20.silence n. silent adj. Break the silence. There’s silence. It’s silent.21.worry n.[c] keep worries to oneselfworry v. ~ about sb. worried adj. be ~ about sb.22.improve … = make … better23.go over … = review …24.whene ver …. = every time …25.through sth. ------- by doing sth 区别though, thoughtthrough hard work = by working hard26.much + n. [u] = a great deal of …(加不可数名词:information, knowledge , courage)27.while/when/before/after +句子可转化为while/when/before/after+doing28.get sb. to do sth. = make/have/let sb. do sth.29.succeed in doing sth. = do sth. successfully [注意还有名词success，形容词successful] 区别victory30.achieve a lot = have many achievements31.body type doesn’t matter. = body type is not so important.32.Sb. did sth. after …. 可转换为sb. didn’t do sth. until …33.die = lose one’s life[lives] 名词: death the death of sb. dead adj. = not alive/ not living34.a writer from Germany = a German writer [German adj. 德国的] many Germans 许多德国人35.write down what he thinks = write down his thoughts the thought of winning the race36.give sb courage to do sth. = encourage sb. to do sth.37.feel surprised to do sth. = do sth. in surprise38.be full of … = be filled with… 充满39.in the centre of … = in the central part of …= in central …40.show an interest in doing sth. = be interested in doing sth.注意还有修饰物的形容词interesting41.not special = common42.over 50 sounds = more than 50 soundsunit 11.grammar n. 语法【U】pay more attention to English grammar a grammar bookbe patient enough to repeat grammar rules for us2.born adj. 天生的He was born to succeed in life. be born again(重生）， a born poeta born and bred American (土生土长的）3.win high praise 赢得很高的赞扬praise n.[u] 称赞，赞扬His book received high praise from readers. V. We praised his courage.He was praised for his patience.4.give up doing sth. 放弃做某事5.general adj. 总的general manager 总经理( 区别：chief engineer) in general 总的来说6.race n. [c] 赛跑，竞赛win/lose a race She came first in the 100-meter race. A race against time 和时间的赛跑7.high-speed adj. 高速的8.miss n. [c] 错误，过失A miss is as good as a mile. V. miss a good chance missed buying the magazine(未能...)9.connect vt. 连接connect A to/with B 把A与B连接起来被动语态：be connected to sth. 被连接到...Build a railway connecting Tianjin to Tangshan.10.as good as ... =almost, nearly简直是adv.He is as good as dead.He is as good as my brother. 和...一样好对比as well as adv. 又，也=also, tooThey visited some factories, as well as hospitals.She can play basketball as well as football.She can play basketball as well as me.( 和...一样好）The book is interesting as well as educational.11.afford to do sth. 承担得起做某事afford sth. 承担得起某物We can’t afford to make any mistakes. we don't have enough money/time to do sth. = we can't afford the money/time to do sth.12.standard [拼写= stand + ard] n.[c] 标准works to high standardsHis work was below / not up to my standard. I set high standards for my students.13.pioneer n. [c] 先锋，开拓者14.careful adj. carefully adv. carefulness n. [u]careless adj. carelessly adv. carelessness n. [u]Carelessness will be a disaster not only to ourselves but also to patients.15.devote one's time/life/oneself to doing sth. /sth. 贡献于...Devote most of her time to her workHe devoted his life to educating (the education of ) teenagers.16.impatient adj. 不耐烦的be ~ with sb.17.think twice 三思18.all 三者或以上都---- none （三者或以上）一个都不both 两者都---- neither 两者都不either 两者中任意一者；也[用于否定句]19.both A and B 复数概念(both... and .... not 部分否定）not only ... but also ... 就近原则but also I have been there.either ... or ... 要么...要么... 就近原则neither...nor ... 既不...也不... 就近原则...nor I was late. 【*there be结构也有就近原则】20.calendar n. 日历21.appear --- disappear v22.lively adj. 活泼的；生机勃勃的，生动的区别live, lovely, alive(dead 反义词)A lively discussionThe music is bright and lively.It’s said that people born in the Year of the Horse are lively.23.divide vt. 划分[拼写] be divided into sth. 被划分成...24.shape vt. 塑造25.It is said that ... 据说26.believe in sb. = trust sb. 信任某人27.make a speech/speeches 【关注拼写，复数+es】28.absent adj. 缺席的be absent from29.practice n. v. practical adj. practi se v 从事，执业Put your plan into practicePractice speaking in front of othersPractice makes perfectPractical实际的，老练的advicePracticed adj. 对... 熟练的，有经验的30.say and speak 区别What did you say?I have nothing to say to you.It’s said that =It is said that...= They say that...In her letter she said that she had an accident.-He is a famous composer. -You don’t say. 真的？（表吃惊或讽刺）不会吧，不至于吧。
仁爱版2020年秋九年级英语上学期期中备考--知识点归纳
仁爱英语九年级上学期期中备考--知识点归纳Unit1Topic11. Great changes have taken place there and my hometown has become more and more beautiful.发生 (必然性地、有计划地、有安排地) 发生在……身上 (偶然性地)happen 是不及物动词，不能接宾语，因此表示某人发生某事的正确表达是：sth. happen to sb. “某人发生某事” 而sb. happen to do sth.表示“某人碰巧做了某事” take the place of 代替2. But there were so many people that I couldn’t find a good place to take photos.so... that... 句型中的so 是副词，常常用来修饰形容词或副词，意思是“如此/这么……以致于……”常用句型为：主语+谓语+so+adj. / adv. + that 从句。
so+形容词+a(n)+单数名词+that 从句。
so+many / much / few / little （少）+名词+that 从句。
such... that...句型中，such 修饰名词，意思也是“如此……以致于……”。
such+a(n)+形容词+单数名词+that 从句。
such+形容词+复数名词/不可数名词+that 从句。
3. There goes the bell.观察主语和谓语 主语是名词：主语是代词：【注意】 通常情况下，在以here, now, there, then, in, out 等副词开头的句子里，当谓语动词是be, come, go 等词，① 主语是名词时，构成完全倒装，需要把谓语动词置于主语之前。
② 若主语是代词时，用部分倒装句，即把主语放在谓语动词之前。
4. What a wonderful experience !experience 经验 不可数 经历 可数感叹句What + a/an + 形容词 + 单数可数名词 + (主语+谓语) + !What + 形容词 + 可数名词复数 + (主语+谓语) + ! What + 形容词 + 不可数名词 + (主语+谓语) + !What a clever girl she is! What good children they are! What bad weather it is!How + 形容词/副词 + (主语 + 谓语) + ! How + 主语 + 谓语+ !How + 形容词 +a/an + 可数名词的单数形式 + (主语 + 谓语) + !How clever she is! How time flies! How nice a boy he is!5. I think it makes me happy to help others.make sb. do sth.使某人做某事make sb./sth. +adj 使.....怎么样make sb./sth. + (头衔，职位名称不加冠词) 让某人当......6. Though I had no time to travel, I still felt very happy.though / although conj. 虽然，尽管，即使【注意】不能与but 连用；但though / although 可以跟still 连用，以加强转折语气。
九年级上册英语期中考试单词重点
九年级上册英语期中考试单词重点在九年级上册英语期中考试中，有许多重要的单词需要我们掌握。
这些单词涵盖了各个主题和语法知识。
下面是对这些单词的详细介绍。
1. ambitious(有雄心壮志的): 这个形容词用来形容一个人有远大的目标和雄心。
例如：He is an ambitious student who wants to become a doctor in the future.（他是一个有雄心壮志的学生，将来想成为一名医生。
）2. attitude(态度): 这个名词指一个人对待事物的看法或态度。
例如：I don't likehis attitude towards learning.（我不喜欢他对学习的态度。
）3. behavior(行为): 这个名词指一个人的举止或行为方式。
例如：His behavior at the party was unacceptable.（他在派对上的行为是不可接受的。
）4. challenge(挑战): 这个名词指一个困难或难题，也可以指一个人接受或面对困难时的努力。
例如：Climbing Mount Everest is a great challenge.（攀登珠穆朗玛峰是一次巨大的挑战。
）5. complain(抱怨): 这个动词指对某事表示不满或抱怨。
例如：She always complains about her job.（她总是抱怨工作。
）6. confident(自信的): 这个形容词用来形容一个人对自己的能力或成功有信心。
例如：He is confident that he will win the competition.（他对自己能够赢得比赛充满信心。
）7. curious(好奇的): 这个形容词用来形容一个人对某事感到好奇并想要了解更多。
例如：I am curious about the new movie.（我对这部新电影很好奇。
九年级英语上册期中知识点(最新)
1.九年级英语上册期中知识点动词不定式作宾语补足语1. 后面能接to不定式作宾语补足语的动词有：ask, order, teach, tell, want, wish, help等。
The teacher told us to do Exercise 1. 老师要我们做练习一。
I want both of you to go. 我要你们俩去。
We helped her (to) repair her bike. 我们帮助她修理自行车。
2. 使役动词let, have, make及感官动词see, watch, notice, hear, feel 等要以不带to的不定式作宾补。
Let’s have a rest. 我们休息一会吧。
I saw him come in. 我看见他进来了。
感官动词后既可跟不带to的不定式作宾补，也可跟v-ing作宾补，前者表示动作的全部过程已结束;后者表示动作正在进行。
I saw him come downstairs.我看见他下了楼。
(说明他下楼了这件事)I saw him coming downstairs.我看见他在下楼。
(说明他下楼时的情景)动词不定式作状语Later he left home to work in different cities. 不久他离开家到不同的城市工作。
He went to see a football match. 他去看足球比赛了。
In order to catch the other students, I must work hard.为了赶上其他同学，我必须努力学习。
2.九年级英语上册期中知识点动词不定式作宾语后面能接不定式作宾语的动词有：agree, ask, choose, decide, forget, hope, learn, want, wish, would like等。
1、We hope to get there before dark. 我们希望天黑以前到那儿。
人教版九年级英语期中复习(知识点+习题)
期中复习Part1知识点回忆①词汇1.patient〔1〕The nurse _______ ________ ________ the baby.〔对…有耐心的〕〔2〕You’ll just have to be ________ (patient) and wait.〔3〕When the teacher came into classroom, the students instantly became________(silent)〔4〕I just live near the supermarket, so it’s _______ for me to go shopping.A.interestingB.convenientC.safeD.inexpensive 〔5〕After the operation, the patient was no longer _______.A.in silenceB.in generalC.in dangerD.in fact2.polite〔1〕你应该对你的老师有礼貌。
You should ____________________ your teachers.〔2〕It’s important to know how to ask for help ________.(polite)〔3〕对于青少年来说, 在父母面前有礼貌地说话很重要。
It’s important for teenagers to _____________________ in front of their parents.3.decide〔1〕Her son has decided to buy a camera (同义句)Her son has _________________________ buy a camera.〔2〕对于学生来说, 下定决心努力学习很重要。
1For students , it’s important to _________________________ to study hard.〔3〕完成句子I think we should ________________________(自己做决定) to finish the work.4.neither〔1〕—Which subjects are you interested in , art or music?— _______.They are really interesting.A.NeitherB.NoneC.BothD.All 〔2〕— Which of the two magazines do you prefer?— I’ll take _______ though _______ of them are very interesting.A.either; allB.all; bothC.either; neitherD.neither; both〔3〕WeChat is very popular._______ the young _______ the old are getting interested in it.A.Neither; norB.Either; orC.Not only; but alsoD.Between; and〔4〕_______ John _______ Lucy speaks good Chinese, so they can communicate with these Chinese students very well.A.Neither; norB.Either; orC.Not only; but alsoD.Both; and 〔5〕—Lucy, what do your parents think of rock music?—_______ my dad ________ mum like it.They think it energetic.〔6〕我和妈妈都不喜欢红色, 所以选择了蓝色的。
人教版九年级英语期中复习知识点归纳总结(Unit1-6)
九年级Unit 1-6 知识点归纳总结Unit1《How can we become good learners》知识点【短语归纳】1. have conversations with sb. 同某人谈话2. too…to… 太……而不能3. the secret to… ……的秘诀4. be afraid of doing sth./ be afraid to do sth. 害怕做某事5. look up 查阅6. repeat out loud 大声跟读7. make mistakes in 在……方面犯错误8. connect ……with… 把……和……连接/联系起来9. get bored 感到厌烦10. be stressed out 焦虑不安的11. pay attention to sth./doing sth. 注意；关注12. depend on 取决于；依靠13. the ability to do sth.. 做某事的能力【单元知识点】1. by + doing ：通过……方式（by是介词，后面要跟动名词，也就是动词的ing形式）2. talk about 谈论，议论，讨论The students often talk about movie after class. 学生们常常在课后讨论电影。
talk to sb= talk with sb 与某人说话3. 提建议的句子：①What/ how about +doing sth.做…怎么样（about后面要用动词的ing形式）如：What/ How about going shopping?②Why don't you + do sth.你为什么不做…如：Why don't you go shopping?③Why not + do sth.为什么不做…如：Why not go shopping?④Let's + do sth. 让我们做…吧。
九年级英语第一学期期中专项复习——词汇+语法(含答案)
九年级英语第一学期期中专项复习—词汇+语法一、根据句意及首字母或汉语提示补全单词。
1.Linda is afraid to speak in class because of her poor p .2. Linda r what she has learned every day so that she can remember it well.3. Ladies and gentlemen, may I have your (注意), please: Flight CZ8420 from Guangzhou is now landing at our airport. Thank you.4. When you have any problems, you should ask the teachers for help because you know (知识) comes from questioning.5.You can have some English (交谈)to practice English.6.One of the (秘诀)to English learning is reading aloud every day.7. A kind man is not always (有耐心的).8. They welcomed him with many (表达方式) of joy.9. The number of the students has (增加) since last year.10. We work with our hands and think with our b.11. People who learn (明智地) and well will achieve their dreams more easily.12. He can’t (发音) some of the words.13.Reading English words (大声地) is a good way to remember them.14. Tom found it difficult for him to learn English (语法) well.15.Our teacher often w us not to play football in the street.16.C is celebrated on December 25th in many Western countries.17. He made a big mistake. His father wanted to p him.18.The flu can s very quickly, so we should prevent it.19. Some parents tell their kids not to speak to (陌生人).20. A thief broke into the office and s a computer last night.21. After dinner, we had ice cream for (甜点).22.Eating mooncakes is a (传统) of celebrating the Mid. Autumn Festival23. (无论谁) breaks the rule should be punished.24. My grandfather can tell a lot of (民间的) stories.25. Who do you (羡慕)?26. In China, we n (通常) say toilet or “washroom” in English.27. Our teacher is kind to us. He often gives us s on our study.28. I’d like some (新鲜的) vegetables.29. He asked several (职员) if there was a band. They all said no.30. On Monday morning, there are few people in the mall. It’s u .31. When you visit a foreign country, it is important to know how to ask for help p .32. It is i to ask the age of a woman in western countries.33. The r was directly refused. He must be very disappointed (失望的).34. I live right next to a supermarket. It's really (便利的).35. Would you please tell me your (地址) and telephone number?36. It was nearly 8: 00 o'clock. He (急促) to school without breakfast.37. What parents say and do will i their children.38. I don't think you will f the exam because you work so hard these days.39. That is (确切地) what I want to know.40. This book is (有帮助的) to make a decision for you.41. Miss Li is a today and I will give you a lesson.42. The man made the (介绍)and everyone shook hands with him.43. Can you tell us about her family (背景)?44. The reporter is (采访) our math teacher in the office.45. Some (门卫) are standing at the door at the moment.46. We saw some (非洲的) lions in the zoo last month.47. Tom is a (有幽默感的)boy.48. We should keep (沉默的)in in the library.49. Miss Wang is very (严肃的) in class.50.Tea plants are (广泛地) grown in the south of China now.51. The Internet has become part of (日常的)life.52. Every driver must obey the (交通) rules.53.When talking to British people，we should (避免) subjects like age，weight or money.54.The man put an advertisement in the (当地的) paper to sell his car.55. One Belt，One Road(一带一路)is helpful for the development of the (国际的) trade.56. The company (生产) many computers every day.57. My father gave me a (可移动的) phone as my birthday gift yesterday.58. The National Day (庆祝) this year was a great occasion.59. Diana is a writer of (历史的) novel.60. Mario is bright, (活泼的) and cheerful二、单项选择。
九年级英语上学期期中复习(外研版)期中知识点易错题考前过关练(期中真题+名校模拟)(含解析)
期中知识点易错题考前过关练（外研版）期中真题+名校模拟一、单项选择A．sells B．grows C．lends D．shows25．— Where is your grandpa, Sara?— Look! He is telling stories ________ a group of children over there.A．from B．over C．between D．among26．We can watch the TV show A Lifelong Journey《人世间》, and if you like, we can play games_________.A．also B．neither C．either D．as well27．—Excuse me. Where is the nearest hotel?—Just go down this road _________ you see a library. The hotel is across form it.A．until B．because C．however D．though28．—Susan, do you know if your mother _________ back tomorrow?—Sorry, I don’t know. As soon as she _________ home, I will tell her to call you.A．comes, gets B．will come , got C．will come, will get D．will come, gets29．—What do you feel ____________ you are looking through the old pictures?—How time flies!A．because B．though C．while D．unless30．Camping is a great experience for students. It can help them ________.A．get up B．grow up C．wake up D．hurry up31．It’s necessary for children to have ________ sleep.A．a few B．a number of C．too many D．plenty of32．A recent study in Australia shows that parents are _______ the top five world’s hardest jobs.A．between B．among C．from D．above33．Today is Qingming Festival. It’s a time ________ remembering loved ones who died.A．to B．of C．for D．about34．If you work ________ than before, you can pass the exam.A．hardly B．harder C．hard D．hardest35．Many people like reading newspapers ________ they can learn what’s happening in the world.A．so that B．in order to C．as soon as D．even though36．You must be tired after walking for a long time. Why not stop ________ a rest?A．have B．having C．had D．to have37．They as well as Bob ________ to school by bus every day.A．go B．goes C．went D．going 38．Deng Yaping is very successful, because ________ she does, she always tries her best.A．however B．whatever C．whenever D．wherever 39．—Why don’t you find some workers to repair the computer?—Well, ________ of them want to do such a low-paid job.A．few B．a few C．little D．a little40．I was busy, ________ I didn’t come to your birthday party last night.A．so B．because C．so that D．but41．All the firemen managed ________ out the big fire which was caused by a cigarette end.A．put B．was put C．putting D．to put 42．Last Wednesday when I got to the railway station, I ________ I left my ID card at home.A．thought B．considered C．believed D．realised 43．All the ________ soldiers were sent to hospital at once.A．wound B．hurt C．wounded D．injury44．________ you go, don’t forget where you are from.A．Whatever B．Whenever C．Wherever D．However 45．She studies very hard ________ she could catch up with her classmates.A．so that B．so C．in order to D．because 46．He failed in the English exam ________ he was too careless.A．so B．because C．because of D．so that 47．His Chinese isn’t ________ to speak to us freely.A．good enough B．enough goodC．enough well D．well enough48．Can you help me to ________ my dog when I leave for Hong Kong?A．look after B．look forC．look at D．look through49．Although he felt sick, ________ he still went to work.A．so that B．/C．but D．so62．You didn't know the news ___________ he told you.A．until B．because C．if D．after63．Could you please teach me ___________ the computer?A．how to open B．how opening C．how to turn on D．how turning on 64．—Mrs Biggs ________the meeting this morning.Do you know why?—Yes.She went to Shanghai on business the day before yesterday and she won't be back until tomorrow.A．held B．attendedC．missed D．joined65．-Did you see the accident?-No，___________ ，I learned about it from Lily.A．Actually B．Suddenly C．Finally D．Immediately66．Jim is busy preparing his report because Mr Li asked him to ___________ tomorrow morning.A．hand it in B．put it away C．give it up D．pick it up.67．The teachers hope all of us can hand ___________ our homework ___________ time every day.A．up；in B．out；on C．in；on D．on；in68．I'm sorry I ___________ my homework at home.A．leave B．forget C．left D．forgot69．Turn ___________ the TV! Your sister is sleeping.A．off B．on C．up D．in70．—______weather it is! Shall we go for a picnic?— I can’t agree more.A．What a good B．What good C．How good the D．How good71．—I want to go to the new amusement park.—________. Let’s go there together this weekend.A．Me too B．Me neither C．I agree D．I’d love to72．You’d better think it over before you make a decision, ______ you may regret（感到后悔）it.A．and B．but C．so D．or73．Tim, ________ in the hallway! You may fall down and hurt yourself.A．doesn’t run B．not running C．don’t run D．runs74．Look at the sign. It says, “No ________.”A．touch B．touching C．to touch D．touched75．I think Daming is a good student ________ a good player.A．as far as B．as good as C．as well D．as well as76．When you _____ yourself with others, you miss the wonder of who you are.A．compare B．communicate C．contact D．connect77．Dear classmates, may I have your attention, please? I have ________ to tell you.A．anything important B．something importantC．important something D．important anything78．He is ________the bottle ________oil.A．fill; of B．full; of C．full; with D．filling; with79．They can’t allow you ________ the rope.A．cross B．to cross C．crossing D．crosses80．They are looking forward to ___________ to Beijing this summer.A．fly B．flying C．will fly D．flied81．We don't have much homework now and our school bags are ______________ they used to be.A．as heavy as B．as heavily as C．not as heavily as D．not so heavy as82．Mr. Wang is strongly ______________ keeping animals in the zoo，because he thinks animals should also enjoy freedom.A．against B．for C．up D．down83．You can't smoke here；it's ________the rules.A．obey B．follow C．make D．against84．The boy ______________ so much time on the computer games that he didn't have enough time to study.A．cost B．spent C．paid D．took85．______ you ______ Eddie is able to swim, but I am.A．Both; and B．Not only; but alsoC．Either; or D．Neither; nor86．--- What is your favourite sport?--- Swimming, I think. It’s _____ of all.A．easier B．more difficult C．the most interesting D．the most boring87．The fridge doesn't work. Why not consider ________ a new one?A．buy B．bought C．to buy D．buying88．If you don’t want to do that, I will ask Jack ________.A．instead of B．instead C．as well D．either89．— I want to know if Maria ________ us in the fashion show tonight.— I believe if she ________ her homework, she will join us.A．joins; finishes B．will join; finishes C．joins; will finish D．will join; will finish 90．This idea sounds fine. But we should ________ in practice.A．try out it B．try it out C．try on it D．try it on91．To stay healthy, teenagers should have ________ 9 hours’ sleep each night.A．at most B．in face C．at least D．up to92．Why not ________ the program you don’t use from the computer?A．take off B．put off C．get off D．go off93．I am sorry. I took your pen ________.A．by accident B．by the way C．by the time D．by mistake 94．What good news for us! We don’t have to pay for school ________.A．any more B．no more C．so far D．no longer 95．— Did you see the accident?— No.________, I knew about it from Tom.A．Actually B．Suddenly C．Usually D．Immediately 96．Don’t ________ the little boy .After all , he is only 5 years old .A．punish B．warmC．tie D．note97．What new ________ have you learnt through your hobbies?A．pleasure B．results C．skills D．success98．It’s _____for you to keep secrets for your friends. In this way，you can win their trust.A．strange B．necessary C．possible D．lucky99．As students, we should ________ our seat to the old and sick on the crowded bus.A．lend B．offer C．bring D．take100．Tony's mother has warned him ________ up.A．stay B．not staying C．don't stay D．not to stay参考答案：1．B【详解】句意：她没有回答我的问题，而是要求我立刻给她回信。
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初三英语上册知识点（全)语法复习动词不定式一. 定义：由to+动词原形构成。
不定式是一种非限定性动词。
而非限定动词是指那些在句中不能单独充当谓语的动词，可分为不定式，动名词，现在分词和过去分词。
“动词不定式”由动词+不定式构成。
动词不定式在句中可以作句子除谓语之外的任何句子成分。
动词不定式的被动形式除了一般形式外还有其完成式和进行式。
二. 动词不定式的构成：to+动词原形作主语动词不定式作主语时，句子的谓语动词常用单数，其位置有以下两种：(1)把不定式置于句首。
如：To get there by bike will take us half an hour. (2)用it作形式主语，把真正的主语不定式置于句后，常用于下列句式中。
如：①It+be+名词+to do It's our duty to take good care of the old. ②It takes sb+some time+to do How long did it take you to finish the work? ③It+be+形容词+for sb+to do It is difficult for us to finish writing the composition in a quarter of an hour. ④It+be+形容词+of sb+to do It is stupid of you to write down everything (that) the teacher says. ⑤It seems(appears)+形容词+to do It seemed impossible to save money.在句型③中，常用表示客观情况的形容词，如：difficult,easy,hard,important,impossible,necessary 等；在句型④中，常用careless,clever,good,foolish,honest,kind,lazy,nice,right,silly,stupid,wise等表示赞扬或批评的词。
在不定式前的sb，可看作其逻辑主语。
这一句式有时相当于Sb is+形容词+to do句式，如：It's kind of you to help me with my English.=You are kind to helpme with my English. (3)举例（1）It's easy (for me) to do that.我做这事太容易了easy,difficult,hard,important,possible,impossible,comfortable, necessary, better; the first, the next, the last, the best, too much, too little, not enough It's so nice to hear your voice. 听到你的声音真高兴。
It's necessary for you to lock the car when you do not use it. 当你不用车的时候，锁车是有必要的。
（2）It's very kind of him to help us. 他帮助我们，他真好。
Kind, nice, stupid, rude, clever, foolish, thoughtful, thoughtless, brave, considerate(考虑周到的), silly, selfish(自私的) 例句: It was silly of us to believe him. 我们真愚蠢，竟然相信了他。
It seemed selfish of him not to give them anything. 他不给他们任何东西，这显得太自私了。
注意：（1）其他系动词如，look，appear等也可用于此句型（2）不定式作为句子成分时，动词用单数形式。
（3）当不定式作主语的句子中又有一个不定式作表语时，不能用It is…to…的句型(对)To see is to believe. 眼见为实。
(错)It is to believe to see.三. 动词不定式作宾语后面能接不定式作宾语的动词有：agree, ask, choose, decide, forget, hope, learn, want, wish, would like等。
We hope to get there before dark. 我们希望天黑以前到那儿。
The man decided to do it herself. 那个男人决定自己做那件事。
动词不定式作宾语的注意事项（2点）1. 有些动词既可跟不定式作宾语，也可跟动名词作宾语，但含义不同：remember to do 记住要做某事remember doing 记得曾经做过某事forget to do忘记要做某事forget doing 忘记曾经做过某事stop to do 停下来去做某事stop doing 停止做某事go on to do 继续做另一件事go on doing 继续做原来在做的事2. 不定式作宾语时，如带有宾语补足语，则要把不定式放到后面，用it作形式宾语，构成“主语+动词+it+宾补（形容词、名词）+不定式”结构。
如：He found it very difficult to get to sleep.他发现很难入睡。
四. 动词不定式作宾语补足语1. 后面能接to不定式作宾语补足语的动词有：ask, order, teach, tell, want, wish, help 等。
The teacher told us to do Exercise 1. 老师要我们做练习一。
I want both of you to go. 我要你们俩去。
We helped her (to) repair her bike. 我们帮助她修理自行车。
2. 使役动词let, have, make及感官动词see, watch, notice, hear, feel等要以不带to的不定式作宾补。
Let’s have a rest. 我们休息一会吧。
I saw him come in. 我看见他进来了。
感官动词后既可跟不带to的不定式作宾补，也可跟v-ing作宾补，前者表示动作的全部过程已结束；后者表示动作正在进行。
I saw him come downstairs.我看见他下了楼。
（说明他下楼了这件事）I saw him coming downstairs.我看见他在下楼。
（说明他下楼时的情景）五. 动词不定式作状语Later he left home to work in different cities. 不久他离开家到不同的城市工作。
He went to see a football match. 他去看足球比赛了。
In order to catch the other students, I must work hard.为了赶上其他同学，我必须努力学习。
六. 动词不定式作定语不定式作定语一般放在所修饰的词的后面。
I need something to eat.Do you have something to read?Tom was so excited that he had no word to say.He is really a fool only to eat.The man to stand here just now is our English teacher.The doctor had no way to save the patient.注意：（1）作定语的不定式是由及物动词组成，被修饰的名词或代词与不定式之间存在方位或方式关系需要有介词。
I am looking for a room to live in. 我正在找一间住房。
（方位关系）We have many things to do experiments with.我们有许多做实验的东西（方式关系）（2）作定语的不定式是由“be + adj + prep”构成的动词短语。
Here there isn’t any book for me to be interested in.We have done many things to proud of. 我们做了许多引以自豪的事。
七. 动词不定式作主语To give is better than to receive.To reach there on foot is impossible.动词不定式作主语时，可以用it 代替，把实际主语不定式放在后面。
It’s better to give than to receive.It’s impossible to reach there on foot.It’s + adj + for sb. to do sth.It’s not difficult for me to study English well.It’s easy for him to work out this math problem.在这个句型中，如果形容词与不定式的逻辑主语关系密切，并且形容词用来说明逻辑主语的性质、品质、特点等，由of引出逻辑主语。
这类形容词主要有nice, kind, good, wrong, right 等。
八. 动词不定式和疑问词连用动词不定式可以和疑问词what, which, how, where, when连用，构成不定式短语，可以作主语、宾语、表语、宾语补足语等。
How to do is still a question.Have you decided when to leave?九. 动词不定式的否定形式动词不定式的否定式是在to前加not；不带to的不定式则在动词前加not. 如：Zhang Ming asked me not to stay at home all day. 张明要我不要整天呆在家里。
My mother let me not do it by myself. 妈妈让我不要独自做这件事。
被动语态英语有两种语态：主动语态和被动语态主动语态（The Active Voice）表示主语是动作的执行者。
被动语态（The Passive Voice）表示主语是动作的承受者。
构成：承受者+助动词be+及物动词的过去分词+by+执行者一般现在时：承受者+助动词am / is/are +及物动词的过去分词+by+执行者一般过去时：承受者+助动词was / were +及物动词的过去分词+by+执行者承受者+助动词shall / will be+及物动词的过去分词+by+执行者承受者+助动词have/ has been+及物动词的过去分词+by+执行者承受者+ can /may/must/should +be+及物动词的过去分词+by+执行者被动语态用法：1）当我们不知道动作的执行者是谁，或者没有必要指出动作的执行者时，需用被动语态。