高中英语主要语法复习.doc

主语从句(Subject Clause)定义:在复合句中充当主语的句子叫做主语从句.第一部分：常规主语从句，即句子在复合句中充当一个主语主语从句的时态：不受主句的时态影响和限制。（1）That he finished writing the composition in such a short time surprised us all.（2）Whether we will go for an outing tomorrow remains unknown.（3）Who will be our monitor hasnt been decided yet.（4） Whom we must study for is a question of great importance.（5）What caused the accident remains unknown.（6）Whatever you did is right.（7）Who the watch belongs to was lost is unknown.（8）What we need is time.（9）What we need are good doctors.小结:（1)引导主语从句连词有that,whether,who,what,whatever等（2)连词位于句首不能省略（3)主语从句大多数情况下视为三单,但也有例外,如例9第二部分：为了防止句子头重脚轻，通常把形式主语it放在主语位置，真正主语搁置于句末（1）It is certain that he will win the match.（2）It is true that he has made a very important discovery in chemistry.（3）It is very likely that they will hold a meeting.（4）It is strange that he should do that.（5）It is important that we all should attend the meeting.（6）It is strange that the man should have stuck to his silly ideas.（7）It is a pity that we wont be able to go to the south to spend our summer vacation.（8）It is still a mystery what caused the accident. （9）It is said that he has gone to shanghai.(=He is said to have gone to shanghai) （10）It is known to all that the gun powder was first invented by the Chinese. （11）It is suggested that the work should be done with great care.（12）It seems that he has seen the film.(=He seems to have seen the film)（13）It happened that the two cheats were there. (=The two cheats happened to be there)小结:（1)以that 引出的主语从句,常以形式主语it引导. It is +形容词/名词/某些动词ed + that 从句.（2) 在有些that从句中要用虚拟语气 (should+do/should+have done)例句4,5,6,11. 主语从句与宾语从句两者的用法和在句中的作用是不同的，下面从它们的各自用法，介绍：一主语从句 主语从句 定义:在句子中担当主语的是一个从句,这个从句就叫做主语从句。 主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。 1. It 作形式主语和it引导强调句的比较 It 作形式主语代替主语从句，主要是为了平衡句子结构，主语从句的连接词没有变化。而it引导的强调句则是对句子某一部分进行强调，无论强调的是什么成分，都可用连词that。被强调部分指人是也可用who/whom。例如： It is a pity that you didnt go to see the film. 2. 用it 作形式主语的结构 (1) It is 名词从句 It is a fact that 事实是 It is an honor that 非常荣幸 It is common knowledge that 是常识 (2) it is 形容词从句 It is natural that 很自然 It is strange that 奇怪的是 (3) it 不及物动词从句 It seems that 似乎 It happened that 碰巧 (4) it is过去分词从句 It is reported that 据报道 It has been proved that 已证实 3. 主语从句不可位于句首的五种情况 (1) if 引导的主语从句不可居于复合句句首。 (2) It is said , (reported) 结构中的主语从句不可提前。例如： It is said that President Jingo will visit our school next week. (3) It happens, It occurs 结构中的主语从句不可提前。例如： It occurred to him that he failed in the examination. (4) It doesnt matter how/whether 结构中的主语从句不可提前。例如： It doesnt matter whether he is wrong or not. (5) 含主语从句的复合句是疑问句时，主语从句不可提前。例如： Is it likely that it will rain in the evening? 4. What 与that 在引导主语从句时的区别 What 引导主语从句时在从句中充当句子成分，如主语宾语表语，而that 则不然。例如： What you said yesterday is right. 二：宾语从句的几个特征：1、引导词：whatwhichwhosewhenwhetherifwhere 2语序：宾语从句必须是用陈述语句。 如：I think that you must work harder. 宾语从句的引导词、连接词的区别、否定转移等现象。 (1)表达时间的几个句型：一般用when或者是what time： What time will the train leave? 由于时刻都是固定的，也可以用一般现在时代替一般将来时： What time does the train leave? (2)时间的表达方式：8：19(nineteen past eight),7:57(three to eight)，在时间的中间也可以加上分的单词(minutes) (3)had better +动词原型。意思是提要求，建议。但是上下级不能用这种方式，因为语气太重： You had better give up smoking . (4)sb leave sth +地点 I left my book in my classroom yesterday. (5)may I have your name(addressage)?一般询问对方的年龄、名字等，不要习惯以前的问法，这样很不礼貌，而是要采访上面的问法。以前的习惯是：how old are you? whats your name? (6)修饰名词的代词次序：限-描-大-形-年-颜-籍-物-类+名词： this is a bridge. This is a beautiful bridge 补充：从句的语序永远是陈述句。在句子中起名词作用的句子叫名词从句 (Noun Clauses）。 名词从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。一、引导名词性从句的连接词引导名词性从句的连接词可分为三类：连词：that（无任何词意）whether,if（均表示“是否”表明从句内容的不确定性）as if ,as though（均表示“好像”，“似乎”）以上在从句中均不充当任何成分连接代词：what, whatever, who, whoever, whom,whose, whichever,whomever连接副词：when, where, how, why,how many,how much不可省略的连词：1. 介词后的连词2. 引导主语从句和同位语从句的连词不可省略。That she was chosen made us very happy.We heard the news that our team had won.比较：whether与if 均为是否的意思。 但在下列情况下，whether 不能被if 取代：1. whether引导主语从句并在句首2. 引导表语从句 3. whether从句作介词宾语4. 从句后有or not Whether he will come is not clear.大部分连接词引导的主语从句都可以置于句末，用 it充当形式主语。It is not important who will go.It is still unknown which team will win the match.二. 主语从句作句子主语的从句叫主语从句。主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever，whoever以及连接副词how，when，where，why等词引导。that在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。例如：What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。Who will win the match is still unknown. 谁能赢得这场比赛还不得而知。It is known to us how he became a writer. 我们都知道他是如何成为一名作家的。Where the English evening will be held has not yet been announced. 英语晚会将在哪里举行，还没有宣布。有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。常用句型如下：（1） It + be + 名词 + that从句（2）It + be + 形容词 + that从句（3）It + be + 动词的过去分词 + that从句（4）It + 不及物动词 + that 从句另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有：It is necessary (important, natural, strange, etc.) that It is a pity (a shame, no wonder, etc.) that It is suggested (requested, proposed, desired, etc.) that三、宾语从句名词句用作宾语的从句叫宾语从句。引导宾语从句的关联词与引导主语从句表语从句的关联词大致一样，在句中可以作谓语动词或介词及非谓语动词的宾语。1. 由连接词that引导的宾语从句由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的that不可省。例如：He has told me that he will go to Shanghai tomorrow. 他已经告诉我他明天要去上海。We must never think (that) we are good in everything while others are good in nothing. 我们决不能认为自己什么都好，别人什么都不好。注意：在demand、order、suggest、decide、insist, desire, request, command等表示要求、命令、建议、决定等意义的动词后，宾语从句常用“（should）+ 动词原形”。例如：I insist that she (should) do her work alone. 我坚持要她自己工作。The commander ordered that troops (should) set off at once. 司令员命令部队马上出发。2. 用who，whom, which, whose, what, when, where, why, how, whoever, whatever, whichever等关联词引导的宾语从句相当于特殊疑问句，应注意句子语序要用陈述语序。例如：I want to know what he has told you. 我想知道他告诉了你什么。 She always thinks of how she can work well. 她总是在想怎样能把工作做好。She will give whoever needs help a warm support. 凡需要帮助的人，她都会给予热情的支持。3. 用whether或if引导的宾语从句，其主语和谓语的顺序也不能颠倒，仍保持陈述句语序。此外，whether与if 在作“是否”的意思讲时在下列情况下一般只能用whether，不用if：a. 引导主语从句并在句首时；b. 引导表语从句时；c . 引导从句作介词宾语时；d. 从句后有“or not”时；e. 后接动词不定式时。例如：Whether there is life on the moon is an interesting question. 月球上有没有生命是个有趣的问题。The question is whether she should have a low opinion of the test?现在的问题是她是否应该有一个低意见的测试？Everything depends on whether we have enough money. 一切要看我们是否有足够的钱。I wonder whether he will come or not. 我想知道他来还是不来。Can you tell me whether to go or to stay? 你能否告诉我是去还是留？4. 注意宾语从句中的时态呼应，当主句动词是现在时，从句根据自身的句子情况，而使用不同时态。例如：he studies English every day. （从句用一般现在时）he studied English last term. （从句用一般过去时）I know (that) he will study English next year. （从句用一般将来时）he has studied English since 1998. （从句用现在完成时）当主句动词是过去时态（could, would除外），从句则要用相应的过去时态，如一般过去时，过去进行时，过去将来时等；当从句表示的是客观真理，科学原理，自然现象，则从句仍用现在时态。例如：The teacher told us that Tom had left us for America 5. think, believe, imagine, suppose等等动词引起的否定性宾语从句中，要把上述主句中的动词变为否定式。即将从句中的否定形式移到主句中。例如：We dont think you are here. 我们认为你不在这。I dont believe he will do so. 我相信他不会这样做。四、表语从句在句中作表语的从句叫表语从句。引导表语从句的关联词与引导主语从句的关联词大致一样，表语从句位于连系动词后，有时用as if引导。其基本结构为：主语 + 系动词 + that从句。例如：The fact is that we have lost the game. 事实是我们已经输了这场比赛。Thats just what I want. 这正是我想要的。This is where our problem lies. 这就是我们的问题所在。That is why he didnt come to the meeting. 那就是他为什么不到会的原因。It looks as if it is going to rain. 看上去天要下雨了。需要注意的，当主语是reason时，表语从句要用that引导而不是because。例如：The reason why he was late was that he missed the train by one minute this morning .【注意】whether 可引导表语从句，但与之同义的if却通常不用于引导表语从句。五、同位语从句同位语从句说明其前面的名词的具体内容。同位语从句通常由that引导，可用于同位语从句的名词有advice、demand、doubt、fact、hope、idea、information、message、news、order、problem、promise、question、request、suggestion、truth、wish、word等。例如：The news that we won the game is exciting.我们赢得这场比赛的消息令人激动。I have no idea when he will come back home. 我不知道他什么时候回来。The thought came to him that Mary had probably fallen ill. 他想到可能玛丽生病了。同位语从句和定语从句的区别： that作为关系代词，可以引导定语从句，充当句子成分，在从句中作宾语时可以省略； that引导同位语从句时，起连词的作用，没有实际意义，不充当句子成分，一般不能省略。 试比较下面两个例句: I had no idea that you were here（that引导同位语从句，不能省略）Have you got the idea（that）this book gives you of life in ancient Greece？（that引导定语从句，作宾语，可以省略）六、名词性that-从句1）由从属连词that引导的从句叫做名词性that-从句。 That只起连接主句和从句的作用，在从句中不担任任何成分，本身也没有词义。名词性that-从句在句中能充当主 语、宾语、表语、同位语和形容词宾语，例如：主语：That she is still alive is her luck.他还活着全靠运气。宾语：John said that he was leaving for London on Wednesday.约翰说他星期三要到伦敦去。表语：The fact is that he has not been seen recently.事实是近来谁也没有见过他。同位语：The fact that he has not been seen recently disturbs everyone in his office. 近来谁也没有见过他，这一事实令办公室所有的人不安。形容词宾语：I am glad that you are satisfied with your job.你对工作满意我感到很高兴。2）That-从句作主语通常用it作先行词，而将that-从句置于句末，例如：It is quite clear that the whole project is doomed to failure.很清楚，整个计划注定要失败。Its a pity that you should have to leave.你非走不可真是件憾事。用it作形式主语的that-从句有以下四种不同的搭配关系：a. It + be +形容词+ that-从句It is necessary that有必要It is important that重要的是It is obvious that很明显b. It + be + -ed 分词+ that-从句It is believed that人们相信It is known to all that众所周知It has been decided that已决定c. It + be +名词+ that-从句It is common knowledge that是常识It is a surprise that令人惊奇的是It is a fact that事实是d. It +不及物动词+ that-从句It appears that似乎It happens that碰巧It occurred to me that我突然想起七、名词性wh-从句1）由wh-词引导的名词从句叫做名词性wh-从句。Wh-词包括who, whom,. whose, whoever, what, whatever, which, whichever等连接代词和where, when, how, why等连接副词。Wh-从句的语法功能除了和that-从句一样外，还可充当介词宾语、宾语补语和间接宾语等，例如：主语： How the book will sell depends on its author.书销售如何取决于作者本人。直接宾语：In ones own home one can do what one likes.在自己家里可以随心所欲。间接宾语：The club will give whoever wins a prize.俱乐部将给得胜者设奖。表语： My question is who will take over president of the Foundation.我的问题是谁将接任该基金会主席职位。宾语补足语：She will name him whatever she wants to. 她高兴给他起什么名字就取什么名字。同位语：I have no idea when he will return.我不知道他什么时候回来。形容词宾语：Im not sure why she refused their invitation.我尚不能肯定她为什么拒绝他们的邀请。介词宾语：That depends on where we shall go.那取决于我们去哪儿。2）Wh-从句作主语也常用先行词it做形式主语，而将wh-从句置于句末，例如：It is not yet decided who will do that job.还没决定谁做这项工作。It remains unknown when they are going to get married.他们何时结婚依然不明。八、if, whether引导的名词从句1）yes-no型疑问从句从属连词if, whether引导的名词从句是由一般疑问句或选择疑问转化而来的，因此也分别被称为yes-no型疑问句从句和选择型疑问从句，其功能和wh-从句的功能相同， 例如：主语：Whether the plan is feasible remains to be proved. 这一计划是否可行还有等证实。宾语：Let us know whether / if you can finish the article before Friday.请让我们知道你是否能在星期五以前把文章写完。表语：The point is whether we should lend him the money.问题在于我们是否应该借钱给他。同位语：They are investigating the question whether the man is trustworthy.他们调查他是否值得信赖。形容词宾语： Shes doubtful whether we shall be able to come.她怀疑我们是否能够前来。介词宾语： I worry about whether he can pass through the crisis of his illness.我担心他是否能度过疾病的危险期。2）选择性疑问从句选择性疑问从句由关联词if/whetheror或whetheror not构成，例如：Please tell me whether / if they are Swedish or Danish. 请告诉我他们是瑞典人还是丹麦人。I dont care whether you like the plan or not.我不在乎你是否喜欢该计划。if和whether的区别： 1、 在动词不定式之前只能用whether 。如： 例8 I cant decide whether to stay. 我不能决定是否留下。 2、 在whether or not 的固定搭配中。如： 例9 I want to know whether its good news or not . 我想知道是否是好消息。 3 、在介词后，只能用whether。如： 例10 His father is worried about whether he lose his work . 他的父亲担心是否会失去工作。 4、宾语从句放在句首表示强调时，只能用whether 。如： Whether this is true or not, I really dont know. 这是否真的，我真的不知道。（例11 Whether they can finish the work on time is still a problem . 他们是否能准时完成这项工作还是个问题。此例为主语从句，有误，感谢指出） 5、用if会引起歧义时，只用whether。如： 例12 Could you tell me if you know the answer ? 这句话有两种意思：“你能告诉我是否知道答案吗？”或“如果你知道答案，请告诉我，好吗？”。如用whether可避免歧义.九、否定转移1) 将think, believe, suppose, expect, fancy, imagine等动词后面宾语从句的否定词转移到主句中，即主句的谓语动词用否定式，而从句的谓语动词用肯定式。I dont think I know you.我想我并不认识你。I don t believe he will come.我相信他不回来。注意：若谓语动词为hope,宾语从句中的否定词不能转移。I hope you werent ill. 我想你没有生病吧。2) 将seem, appear 等后的从句的否定转移到前面。It doesnt seem that they know where to go.看来他们不知道往哪去。It doesnt appear that well have a sunny day tomorrow.看来我们明天不会碰上好天气。3) 有时将动名词，介词短语或整个从句的否定转变为对谓语动词的否定。I dont remember having ever seen such a man.我记得从未见过这样一个人。 (not否定动名词短语 having)Its not a place where anyone would expect to see strange characters on the street. 在这里，人们不会想到在街上会碰上陌生的人。 (anyone 作主语，从句中的谓语动词不能用否定形式。)4) 有时状语或状语从句中否定可以转移到谓语动词前。The ant is not gathering this for itself alone.(否定状语)蚂蚁不只是为自己采食。He was not ready to believe something just because Aristotle said so. (否定because状语) 他并不因亚里斯多德说过如何如何，就轻信此事。She had not been married many weeks when that mans younger brother saw her and was struck by her beauty.(否定状语many weeks)她结婚还不到几个月，这个人的弟弟就看见她了，并对她的美貌着了迷。主谓一致1) 语法形式上要一致,即用作主语的名词中心词和谓语动词在单、复数形式上一致 2) 意义上要一致,即主语和谓语的一致关系取决于主语的单、复数意义.1 并列结构作主语时当意义为复数时谓语用复数注意: 当主语由and连结时,如果它表示一个单一的概念,即指同一人或同一物时,谓语动词用单数,and 此时连接的两个词前只有一个冠词.The iron and steel industry is very important to our life.2 主谓一致中的靠近原则当there be 句型的主语是一系列事物时,谓语应与最邻近的主语保持一致.There is a pen, a knife and several books on the desk.There are twenty boy-students and twenty-three girl-students in the class.总的来说，在由not onlybut also, not justbut, or, eitheror, neithernor连接主语的句子中及在there be句型中，谓语动词的单复数按就近原则处理，即按与谓语动词最靠近的那个主语来确定谓语动词的单复数形式。如：Not only John but also I am going to Shanghai next week.Either you or she is to go.Here is a pen, a few envelops and some paper for you.3 谓语动词与前面的主语一致当主语后面跟有with, together with, like, except, but, no less than, as well as 等词引起的短语时,谓语动词与前面的主语一致.The teacher together with some students is visiting the factory.He as well as I wants to go boating.4 谓语需用单数1) 代词each和由every, some, no, any等构成的复合代词作主语,或主语中含有each, every, 谓语需用单数.Each of us has a tape-recorder.There is something wrong with my watch.2) 当主语是一本书或一条格言时,谓语动词常用单数.The Arabian Night is a book known to lovers of English.是英语爱好者熟悉的一本好书.3) 表示金钱,时间.距离.价格或度量衡的复合名词作主语时,通常把这些名词看作一个整体,谓语一般用单数.(用复数也可,意思不变.)Three weeks was allowed for making the necessary preparations.Ten yuan is enough.5 指代意义决定谓语的单复数1) 在代词what, which, who, none, some, any, more, most, all等词的单复数由其指代的词的单复数决定.All is right. (一切顺利.)All are present. (所有人都到齐了.)2) 集体名词作主语时,谓语的数要根据主语的意思来决定.如family, audience, crew, crowd, class, company, committee等词后用复数形式时,意为这个集体中的各个成员,用单数时表示该个集体.His family isnt very large. 他家不是一个大家庭.His family are music lovers. 他的家人都是音乐爱好者.但集合名词people, police, cattle, poultry(家禽).militia(民兵).vermin等在任何情况下都用复数形式.Are there any police around3)有些名词,如variety, number, population, proportion, majority 等有时看作单数,有时看作复数.A number of +名词复数+复数动词.The number of +名词复数+单数动词.A number of books have lent out.The majority of the students like English.6 与后接名词或代词保持一致1) 用half of, part of, most of, a portion of 等词引起主语时,动词通常与of后面的名词,代词保持一致.Most of his money is spent on books.Most of the students are taking an active part in sports.2) 在一些短语,如 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.但由more than of 作主语时,动词应与其后的名词或代词保持一致.Many a person has read the novel. 许多人都读过这本书.More than 60 percent of the students are from the city.百分之六十多的学生都来自这个城市.主谓一致中的表里不一现象谓语和主语必须在人称和数上保持一致,最基本的原则是:单数主语用单数动词,复数主语用复数动词.但在实际使用当中情况比较复杂,现在学生常犯的主谓一致错误归纳整理如下1,more than one +名词作主语时,谓语动词常用单数.例如:More than one teacher gets the flowers. 不止一个教师得到了花.2, many a +名词作主语时,从意义上看是复数,但谓语动词常用单数.例如:Many a student has been sent to plant trees. 很多学生被派去植树.3,half of, the rest of, most of, all of及百分数或分数+of 等后接名词作主语时,谓语动词形式根据of后的名词而定.例如:Three fourths of the surface of the earth is covered with water.地球表面四分之三为水所覆盖.4,all指人时,动词用复数;all指物时,动词用单数.例如:All are present and all is going well. 所有人全部到场了,一切进展顺利5,what引导的主语从句,谓语动词可视表语而定:表语是单数名词时,动词用单数,相反,则用复数.例如:What they want to get is a number of good books.他们想得到的是大量的好书.6,and连接的两个单数名词前若用each,every,no修饰,该名词短语作主语时,谓语动词用单数形式.例如:No book and no pen is found in the schoolbag.书包里没有书和钢笔.7,当主语后面有as well as, with, along with, together with, but, like, rather than, except等引导的短语时,谓语动词要与最前面的主语保持一致.例如:My father as well as his workmates has been to Beijing. 我父亲和他的同事曾去过北京.8,each作主语的同位语时, 谓语动词由主语来决定,与each无关.例如:They each have a bike. 他们每人有一辆自行车.9,动词不定式,动词-ing形式短语作主语时,谓语动词常用单数.例如:Going out for a walk after supper is a good habit.晚饭后出去散步是一个好习惯.10,the following作主语时,谓语动词的数与后面名词的数保持一致.例如:The following are good examples下面是一些好例子.11,以-ics结尾的学科名词,如politics,physics,mathematics等作主语时,谓语动词用单数.以-s结尾的名词news, works, plastics等同属此类.例如:Politics is now taught in all schools. 现在各学校都开设政治课.当以-ics结尾的学科名词表示学科以外的意义时，用作复数，如：mathematics（运算能力）politics(政治观点)economics（经济意义）等12,有些用来表示由两个对应部分组成一体的名词复数(trousers, glasses,shoes.shorts.scissors.scales等)作主语时,前面若有一条,一副,一把之类的单位词,动词用单数;若没有单位词或单位词是复数,则谓语动词用复数.例如:The shoes are all right. 这些鞋子都很合适.还有一些以-s结尾的名词通常用复数：arms（武器）.clothes.contents.minites（记录）.remains（遗体）.thanks等13,one and a half +名词作主语时,谓语动词要用单数.例如:One and a half apples is left on the table. 桌子上有一个半苹果.14,One or two more +复数名词作主语时,谓语动词用复数.例如:One or two persons are sent there to help them do the work. 要派一两个人到那儿去给他们帮忙.15,one of+复数名词+ 定语从句结构中,定语从句的谓语动词要用复数;而在the only one of +复数名词+定语从句的结构中,定语从句的谓语动词要用单数.例如:He is one of the students who get there on time.他是准时到达那里的学生之一.16,表示时间,距离,金钱等的复数名词作主语表达一个整体概念时,谓语动词常用单数,但若强调数量,谓语动词可用复数.例如:One million dollars is a lot of money. 一百万美元是一大笔钱.集合名词的主谓一致集合名词作主语时,主谓一致关系是一个较为复杂的问题.对此类问题我们可以从数的角度分为四类.1)单数复数型.凡是有复数词尾变化形式的集合名词都属于此类.如:a classclasses; a familyfamilies; a governmentgovernments; an armyarmies; a peoplepeoples; a groupgroups; a crowdcrowds; a crewcrews等.这类集合名词强调的是整体性,即当作一个整体或多个整体来看待.属于这类集合名词的单数作主语时,谓语动词用单数;复数形式作主语时,谓语动词用复数.【例如】A big crowd often gathers on the square every morning.The government has decided to pass the bill.There are huge crowds in