主语从句(精讲精练).doc

主语从句一主语从句的结构： 主语从句 + 谓语动词 + （宾语）+ 状语或其他 That he failed the math exam surprised all of us. That you joined us made all of us happy. That he didnt care for money was a lie. Whether well go out for an outing depends on the weather. What he did added to our difficulty. What surprised everybody was that he didnt come to the meeting.二、主语从句的词有从属连词、连接代词、连接副词。从属连词：that，whether1.that 引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。 That he will win is certain. That the earth travels around the sun is a well-known fact.注意: 由that 引导的主语从句有时为了使句子结构平衡, 避免 “头重脚轻”, 常用 it 作形式主语, 而把从句放在后面。 That he will win is certain. =It is certain that he will win. That the earth travels around the sun is a well-known fact. =it is a a well-known fact that the earth travels around the sun2.whether引导主语从句只起引导作用，在主语从句中不充当任何成分,意思为“是否” Whether hell come here isnt clear. 他是否会来这里还不清楚。 Whether you can do it by yourself mainly deoends on your ability,not your age. Whether she is coming or not doesnt matter.连接代词：who,whom,whose,which,what,whoever,whatever,whichever表疑问：who 谁， 作主语，宾语，表语 whom 谁， 作宾语 whose 谁的 作定语 which 哪一个 作定语，主语，宾语，表语 what 什么 作主语，宾语，表语Who she is doesnt concern me. Who you are looking for is not known to us.Who can do such work is not easy to know.Which team will win is uncertain.Which should be chosen remains uncertain.Whose watch was lost is unknown.What had happened is still a mystery.表陈述：what 所-的人/物/样子/地方等 作主语，宾语，表语What he wants is a new bicycle. What I want to know is this. What he says is not important. What I am afraid of is their taking him to Portugal. What you need is a good-sized canvas bag. What really matters is that she wore a pair of white shoes.What is known is that the 2008 Olympic Games will take place in Beijing.whatever .whoever .whichever.whomever表陈述，作主语、宾语、表语等, Whoever(Anyone who) wants to enter into this school must take the exam. Whoever told you that was lying. Whatever(Anything that) she did was right. Whatever was said here must be kept secret. Whichever you want is yours 连接副词：where,how,why,when （状语） When we arrive doesnt matter. 什么时候到没有关系。 How this happended is not clear to anyone. 这件事怎样发生的，谁也不清楚。 Where I spend my summer holiday is no business of yours. How many people we are to invite is still a question. 邀请多少人还是一个问题。三、形式主语it构成的主语从句It + be + 名词 + that从句（a pity, a shame, a fact, an honour, a wonder, a good thing, no wonder等。）惯用句型有：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It is no wonder that 难怪 It is a pity that 真遗憾It is a pity that she has made such a mistake.真遗憾，她犯了这样一个错误。It is no wonder that he has passed the examination.难怪他考试及格了。It is a shame that you have to leave so soon.你必须这么早离开，真遗憾。It was a stupid thing that he didnt listen to his teacher.他不听老师的话，真蠢。It is a great honour that he receive that prize.他得到了那个奖真是无上的荣耀。It is a fact that he cheated in the exam.It + be +形容词+ that从句 用于该句型中的形容词有：clear, obvious, true, certain, important, strange, natural, surprising, fortunate, good, wonderful, funny, possible, impossible, likely, unlikely, quite clear, unusual等。惯用句型有：It is necessary that 有必要It is important that 重要的是It is obvious that 很明显It is likely that 有可能It is important that we (should) learn English well.我们学好英语是非常重要的。It is necessary that the students (should) remember all the new words.学生记住所有的新单词是必要的。It + be + -ed 分词 + that从句常见的过去分词有：said, reported, learned, announced, known, decided, expected, believed, considered, declared, felt, hoped, seen, supposed, thought, understood等。惯用句型有：It is said that 据说It is reported that 据报道It is believed that 大家相信It is hoped that 大家希望It is well known that 众所周知It is thought that 大家认为It is suggested that 据建议It has been decided that 大家决定It must be remembered that务必记住的是It must be admitted that必须承认 It cannot be denied that 不可否认 It must be pointed out that需指出的是 It is reported that another man-made satellite has been put into orbit.据报道又一颗人造卫星送入轨道。It is said that he has gone to the USA for further study.据说他已去美国深造了。It is known to all that light travels in straight lines.众所周知，光以直线运行。It has been decided that we should design the machine ourselves.已经决定我们自己来设计这部机器。It + 及物动词 + 名词 + 从句It makes no difference to me whether its foggy or clear.对我来说，天气有雾或晴朗没什么关系。It + 不及物动词 + that分句常见的不及物动词有：seem, happen, look, appear, come about, turn out, occur等。惯用句型有：It appears that 似乎It (so) happens (that)（那么）碰巧It occurred to me that 我突然想起It seems that 似乎It doesnt matter (to sb.) + 从句（对） 都无所谓It seems that he is sick. (= He seems to be sick.)看来他似乎有病。It happened that he wasnt there. (= He happened not to be there.)碰巧他不在哪儿。It occurred to me that I forgot to send the email.It doesnt matter to me what he says.对我来说，他说什么都无所谓。It doesnt matter if we are late.我们就是晚到一点也不要紧。主语从句的谓语动词的虚拟语气，要用should 加动词原形， should 可省略。(1)suggested, ordered, proposed, required, demanded, requested, insisted + (should) do(2)important, necessary, natural, strange + (should) do(3)a pity, a shame, no wonder + (should) do It is suggested that we (should) hold a meeting next week. It is necessary that he (should) come to our meeting tomorrow.需要注意的是,it作形式主语时,要注意和as引导的定语从句的区别。试比较:It was reported that no country was under the terrorist attack last year. As was reported, no country was under the terrorist attack last year. 句意:据报道,去年没有国家遭到恐怖分子的袭击。四：主谓一致：一般说来，单个的主语从句做主语，主句的谓语动词用单数。 That we go swimming every day does us a lot of good.练习题1._ makes mistakes must correct them.2. It worried her a bit _ her hair was turning grey.3.Its uncertain _ the experiment is worth doing.4._ the boy didnt take medicine made his mother angry.5._ we cant get seems better than _ we have.6._ well go camping tomorrow depends on the weather.7._is going to do the job will be decided by the Party committee.8._the house will be built will be discussed at tomorrows meeting.8._team will win the match is a matter of public concern.10._leaves the room last ought to turn off the lights.11.It is obvious to the students _ they should get well prepared for their future.12. was most important to her，she told me，was her family.13.matters most in learning English is enough practice.14.parents say and do has a life-long effect on their children.15.It is none of your businessother people think about you.Believe yourself.16.makes this shop different is that it offers more personal services.17.They lost their way in the forest, and made matters worse was that night began to fall18. really matters is not whether you succeed or not，but rather whether