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大学英语四级重点语法精要大学英语四级语法精要大学英语四级语法精要一、动词(时态，语态，用法，省略，一致性等) （一）时态 1、主动形式完成进行时。 时间状语从句当中的时态：所有的过去一般现在时 表示现在和将来现在完成和将来完成3、现在完成进行时态 (have/has been + -ing 分词构成): 动作或状态从过去某时开始,继续到现在,可能继续下去,也可能刚刚结束. 1大学英语四级语法精要 Ive been writing letters for an hour. Ive been sittingin the garden.4、过去完成进行时(由had been + ing分词构成): 过去某个时刻以前一直在进行的动作 We had been waiting for her for two hours by the time she came.5、将来完成进行时: 将来某个时刻以前一直在进行的动作. By next summer, he will have been working here for twenty years.6、将来完成时(由shall/will have + 过去分词构成): 将来某时会业已发生的事. I shall have finished this one before lunch.Theyll have hit the years target by the end of October.（二）语态1、可以有两种被动结构的类型,例如: He was said to be jealous of her success.It was said that he was jealous of her success. 能同时适用于上述两个句型的主动词通常都是表示“估计”，“相信”等意义的动词，常见的有：assume,believe,expect,fear,feel,know,presume,report,say,suppose,understand等。 It is supposed that the ship has been sunk. The ship issupposed to have been sunk.2、担当be supposed to 与不定式的一般形式搭配时往往表示不同的意义。2大学英语四级语法精要 Why are you driving so fast in this area? You are supposedto know the speed to know the speed limit. (你应该晓得速度限制)3、双宾语及宾补结构的被动语态1）双宾语结构的被动语态: 双宾语结构变为被动语态时,可以把主动结构中的一个宾语变为主语,另一个宾语仍然保留在谓语后面,但多数是把间接宾语变为主语。 He was asked a number of questions at the press conference.Two days were allowed them for making the necessary preparations.2） 宾补结构的被动语态: She was called Big Sister by everybody.4、 短语动词1）Vi. + adv.：The plane took off two hours late.2）Vi. + prep.：They looked round the Cathedral.3）Vi. + prep. (有被动语态)：Shes looking after her sisters children.4）Vi. + adv. + prep.：I began to look forward to their visits.5）Vt. + O + adv.：Some women choose to stay at home and bring up their children.The children were brought up by their mother.6） Vt. + adv. + O (无被动语态)：I am trying to give up smoking. 3大学英语四级语法精要7）Vt. + O + prep.：We talked Donald into agreement.（三）省略1、在以as, than, when, if, unless等引导的从句中的省略: 在有些状语从句中,如果谓语包含有动词be,主语又和主句的主语一致a),或者主语是it b),就常常可以把从句中的主语和谓语的一部分(特别是动词be)省略掉.1）Look out for cars when crossing the street.When taken according to the directions, the drug has no sideeffects.If not well managed, irrigation can be harmful.Though reduced in numbers, they gained in fighting capacity. He said that no acrobat could ever perform those daring feats unless trained very young.Once having made a promise, you should keep it.2）If necessary Ill have the letter duplicated.As scheduled, they met on January 20 at the Chinese Embassy.2、 在以than a) 或 as b) 引起的从句中,常会有一些成分省略.1）He told me not to use more material than (it is) necessary.We should think more of the collective than of ourselves.2）They worked with as much enthusiasm as young people (did).He is now a vice-manager, but still often works in the kitchen as before.Their training is free, as is all education.4大学英语四级语法精要We will, as always, stand on your side.3、错误的省略1）His life is as fully committed to books as anyone I know.2）While standing there in her nightgown, two bullets struck thewall beside her.（四）一致1、主谓一致（与插入语无关）1）主谓的分隔原则：主谓之间可以用定语从句或者省略的定语从句分隔。2）定语从句中的主谓一致3）随前一致：n. + together with；as well as；including；along with；with / of；accompanied with / by4）就近原则5）如果主语表示的是同一个概念，同一人，同一事的时候，谓语动词用单数，这种结构的特征是and连接 的两个词只有一个冠词。 The iron and steel industry is very important to our country. The head master and mathematical teacher is coming. The head master and the mathematical teacher are coming. 类似的还有：law and order；bread and；butterblack and white；To love and to be loved is ；A lawyer and a teacher are；A lawyer and teacher is 6）随后原则：not A but B / not only A but also B+v.(与B一致)7）百分比结构：most，half，rest，some，majority，one + persent；of+n1+v.（由n1决定）8）倒装结构的主谓一致： There be +n 由名词决定动词 Among , between等介词位于句首引起倒装结构：Among / Between +系动词+n. （由名词决定动词）9）The + adj.的主谓一致： 当表示“一类人” 当表示某一抽象概念时。例：The good is always attractive. 5大学英语四级语法精要10） To do/doing/主从+vs. 例：More than one + n.；many a +n.；a day or two2、如果主语是单数,尽管后面跟有with, together with, as well as,as much as, no less than, more than等引导的短语,谓语动词仍旧用单数形式. Terry, along with her friend, goes skating every Saturday.An expert, together with some assistants, was sent to help in this work.The captain, as well as the coaches, was disappointed in the team.3、 代词作主语时一致1）each, either, neither和由some, any, no, every构成的复合代词,作单数看待. Each of us has something to say. Is everybody ready?Somebody is using the phone.2） some, few, both, many 等作复数3） some 可后接复数,也可接单数,表示某一。none作复数看待时较多,但也有时作单数看待,主要看说话人脑中联系想到的是复数还是单数概念, 但none 在代表不可数的东西时总是看作单数: None of the books are easy enough for us. None of us seemto have thought of it.None (= nobody) has felt it more keenly than she did. None of this worries me.6大学英语四级语法精要4）all 和most 可后接复数,也可接不可数名词 (all of the, mostof the ), 动词用单数.4、由and 或 both and 连接名词词组时, 后用复数; 由notonlybut (also), eitheror, neithernor或 or 连接的并列主语, 谓语通常和最邻近的主语一致.1）Not only the switches but also the old writing has beenchanged.My sister or my brother is likely to be at home.Neither my wife nor I myself am able to persuade my daughter to change her mind.2）如果一个句子是由there 或here引导, 而主语又不止一个, 谓语通常也和最邻近的那个主语一致. There was carved in the board a dragon and a phoenix.Here is a pen, a few envelopes and some paper for you.5、people, police, cattle, poultry (家禽), militia (民兵) 等通常都用作复数.1）Cattle are grazing on the pasture.The police are looking for him.2）有些集体名词有时作单数看待, 有时作复数看待, 主要根据意思来决定. His family isnt very large.The committee meets twice a month.The audience was enormous.7大学英语四级语法精要The audience were greatly moved at the words.3）有些名词单复数同形, 可根据意思决定谓语动词的数: This new series is beginning next month.These new series are beginning next month.This species is now extinct.These species are now extinct.4、 表示时间, 重量, 长度, 价值等的名词, 尽管仍是复数形式, 如果作整体看待, 动词也可用单数形式 (当然用复数动词也是可以的): Three weeks was allowed for making the necessary preparations.One hundred li was covered in a single night.6、其他问题1）书名, 国家名用单数: Tales from Shakespeare is a book by Charles Lamb.2） 学科名, 如mathematics, economics用单数.3） many a 或more than one 所修饰的词作主语时, 谓语动词多用单数形式: Many a person has had that kind of experience.More than one person has involved in the case.4）a number of 后接复数, the number of后接单数: A number of books have been published on the subject.The number of books published on the subject is simply amazing.5）one of those 后用单数. 在“one of + 复数名词 +关系分句”结 8大学英语四级语法精要构中，关系分句中谓语动词的单复数形式在一般情况下有两形式，一是根据先行词采用复数形式： Joan is one of those people who go out of their way to behelpful.6）当one 之前与the only 等限定词和修饰语时，关系分句谓语动词根据one 而定，即采用单数形式： He is the only one of those boys who is willing to take on another assignment.二、非谓语动词（一）不定式1、形式1） 完成式: 不定式的一般形式所表示的动作, 通常与主要谓语表示的动作(状态)同时(或几乎同时)发生, 或是在它之后发生. 假如不定式所表示的动作, 在谓语所表示的动作(状态)之前发生, 就要用不定式的完成式.9大学英语四级语法精要 I am glad to have seen your mother (= I am glad I have seenyour mother).(比较: I am glad to see you.)He is said to have written a new book about workers.He pretended not to have seen me.2） 进行式: 如果主要谓语表示的动作(状态)发生时, 不定式表示的动作正在进行, 这时要用不定式的进行式. You are not supposed to be working. You havent quiterecovered yet.We didnt expect you to be waiting for us here.He pretended to be listening attentively.3） 完成进行式: 在谓语所表示的时间之前一直进行的动作, 就要用不定式的完成进行式. The struggle was known to have been going for twenty years.We are happy to have been working with you.4） 被动式: 当不定式的逻辑上的主语是不定式所表示的动作的承受者时, 不定式一般要用被动形式. It is an honor for me to be asked to speak here. She hatedto be flattered.He wanted the letter to be typed at once. This is bound to be found out.There are a lot of things to be done. She was too young to be assigned such work.10大学英语四级语法精要2、不定式的常考形式：1）一般形式：He decided to work harder in order to catch up with the others.被动形式: He preferred to be assigned some heavier work to do.语法功能：表示与谓语动词同步发生2）完成形式：He pretended not to have seen me.被动形式：The book is said to have been translated into many languages.语法功能：表示发生在谓语动词之前3、不定式常考的考点：1）不定式做定语-将要发生2）不定式做状语-目的3）不定式充当名词功能-To see is to believe.4、不定式的省略1）感官动词 see, watch, observe, notice, look at, hear, listento, smell, taste, feel + do 表示动作的完整性，真实性；+ doing 表示动作的连续性，进行性I saw him work in the garden yesterday.昨天我看见他在花园里干活了。(强调"我看见了"这个事实)I saw him working in the garden yesterday.昨天我见他正在花园里干活。（强调动作）2）感官动词后面接形容词而不是副词：The cake tastes good; It feels comfortable.3）使役动词：have bid make let 等词后不定式要省略但同1)一样被动以后要还原toId like to have John do it. I have my package weighed.4）help；help sb do；help sb to do；help do help to do5、有些动词后只跟不定式如：want，wish，hope，manage，promise，refuse，pretend，plan， offer，decide，agree，expect，allow sb. to do，cause sb. to do，permit sb. to do，enable sb. to do，force sb. to do，be more likely to do，love to do，warn sb. to do，be able to do，be ambitious to do，begin to do，start to do6、有的时候to后面要接-ing形式accustom (oneself) to，be accustomed to，face up to，in addition to，look forward to， object to， be reduced to， resign oneself to， be resigned to， resort to， sink to， be used to， be 11大学英语四级语法精要alternative to， be close/closeness to， be dedication/dedicated to， be opposition/opposed to， be similarity/similar to.7、功用: 不定式可以作主语 (a), 宾语 (b), 表语 (c), 定语