3 unit 4主语从句.doc

课题： Book III Unit 4 内容：主语从句 课型：语法课 编号：No. 4主编：刘秀春 审核:张海军 审批：高向军【学习目标】1.学习归纳并掌握主语从句的构成及用法。2.在真实情景中熟练运用，提高学生阅读的积极性。【使用说明】 1. 25分钟自主学习；结合“方法点拨”仔细观察所给例句；2. 10分钟自主归纳出语法规则；3. 10分钟合作探究，完成巩固练习。【自主学习】I. Revision1. I say (that) today is a happy day. ( )2. Thats because many good teachers come to our class. ( )3. I dont know whether he will come on time. ( )4. The fact is that he doesnt like playing football.( )II. 感知下面句子。1. You are a student.2. Smoking is bad for you.3. To find your way can be a problem. 4 .The boy is very clever.5. That we shall be late is certain.6. It is certain that we shall be late.III. 课文原句1. What it was to become was uncertain.2. It was not clear whether the shape would last or not.3. What is even more important is that as the earth cooled down, water began to appear on its surface.4. It was not immediately obvious that water was to be fundamental to the development of life.5. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.6. Why they suddenly disappeared still remains a mystery.7. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.III. 主语从句1. 连接词1) 由连词that引起的主语从句： That he likes playing football is known to us. 他喜欢踢足球是众所周知的。2) 由连词whether引起的主语从句 Whether they will sell the house is not yet decided. 他们是否卖掉这所房子还没有决定。Practice：1. _ you dont like him is none of my business. 2. _ he will host the meeting is not known yet.3. _ well go camping tomorrow depends on the weather.4. If the policemen will come is not certain.(改错)3)连接代词 who,whom,whose,what,which,Whatshedidisnotyetknown.Who will do the work has not been decided yet.whatever, whoever ,whichever也可引导主语从句。 Whatever was said here must be kept secret. 这里说的话都应当保密。Whoever makes mistakes must correct them. 凡犯了错误的人都必须改正。4)连接副词where,when,how,why等。Howthishappenedisnotcleartoanyone.When he will be back depends on the weather.How the pyramids were built is still a mystery.2. 主语从句的语序：陈述语序改错练习 Where shall we spend the holiday isnt decided.3.主谓一致1）单个主语从句做主语时，谓语用单数。Whose watch was lost is unknown.2）但由and连接的多个从句做主语时，谓语动词多用复数。What he will do and how we will help him have not been decided.但“what”引导主语从句时, 谓语动词：常与其后的名词作表语一致。What you need _only old books.What we want _enough time.4. 主语从句后置 为避免主语冗长,句子头重脚轻,经常用it作形式主语,主语从句放在后面作真正的主语。这样就构成了下面一些常用句型：1) It is + adj. / n. +从句 It is a pity/shame that. 遗憾的是 It is possible that. 很可能 It is unlikely that. 不可能 It is certain that 确定的是 It is necessary that 有必要 eg: It is a pity that you missed the chance. It is necessary that we must work hard.2) It +不及物动词+从句 It seems/appears that. 似乎 It happened that. 碰巧Eg: It happened that I met Tom yesterday. 3) It + be +过去分词+从句 It is said that. 据说 It is known to all that. 众所周知 It is reported that. 据报道 It is believed that. 据信; 人们相信It is suggested that. 有人建议 eg: Its known to all that the earth is round.5. 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 只起连接作用，不充当任何成分，但不能省略。例如： What you said yesterday is right.What we need are good doctors.That he finished writing the composition in such a short time surprised us all.改错：You have made a mistake is a fact.【方法点拨】宾语从句：_表语从句：_用作_的从句叫主语从句，它是名词性从句之一。看例句总结：_whether与if_连接代词的用法：_whoever和no matter who区别：_连接副词的用法：_it 作形式主语和it引导强调句的比较:_举例说明：_ 【自我检测】1._ makes mistakes must correct them.A. What B. That C. Whoever D. Whatever2. It worried her bit _ her hair was turning grey.A. while B. that C. if D. for3. When and why he came here _ yet.A. is not known B. are not known C. has not known D. have not known4. _ Tom liked to eat was different from _.A. Thatthat you had expected B. What that you had expectedC. Thatwhat you had expected D. Whatwhat you had expected 5._ we go swimming every day _ us a lot of good.A. If.do B. That.do C. If.does D. That.does6. It _ Bob drives badly.A. thinks that B. is thought what C. thought that D. is thought that 7. Its uncertain _ the experiment is worth doing.A. if B. that C. whether D. how8._ the boy didnt take medicine made his mother angry.A. That B. What C. How D. Which 9._ we cant get seems better than _ we have.A. What, what B. What, that C. That, that D. That, what10._ you dont like him is none of my business. A. What B. Who C. That D. Whether 11._ well go camping tomorrow depends on the weather.A. If B. Whether C. That D. Where 12._is going to do the job will be decided by the Party committee.A. That B. Why C. How D. Who 13._he wont go there is clear to all of us.A. How B. What C. Why D. This 14._the house will be built will be discussed at tomorrows meeting.A. If B. Where C. That D. What 15. ._you come or not is up to you.A. What B. If C. Why D. Whether 16._makes mistakes must correct them.A. Who B. Anyone C. Whoever D. Anybody 17._team will win the match is a matter of public concern.A. Which B. That C. If D. How 18._leaves the room last ought to turn off the lights.A. Anyone B. The person C. Whoever D. Who 19. _ he made an important speech at the meeting was true. A. That B. Why C. What D. How 20._ is known to us all is that America is a developed country _ the First World. A. Which; belong to B. As, belonged