高中英语必修3第4单元(语法-原创)课件

1、主语从句主语从句Grammar3. To find your way can be a problem. What part does the underlined part serve as in each sentence? 2. Smoking is bad for you.1. You are a student.4. “How do you do?” is a greeting.5 .What she said is not yet known.6. That we shall be late is certain.7. It is certain that we shall be

2、late.subjectA sentence serving as subject is called Subject Clause.Grammar3. To find your way can 主语从句（Noun Clauses as the Subject） 定义： 用作主语的从句叫主语从句，它是名词性从句之一。引导主语从句的连接词有：连词that, whether；连接代词who, what和which；连接副词when, where, how和why。 主语从句（Noun Clauses as the Su that, whether that 在主语从句中本身没有意义,不充当句子成分

3、,位于句首时,不能省略. e.g. That light travels in straight lines is known to all. whether “是否”,不充当句子成分. e.g. Whether well go out depends on the weather. that, whether that 在主语从句中本身没有what, who, whom, which(连接代词);when, where, why, how(连接副词);这一类连接词在主语从句中可分别作主语、宾语、表语、状语、和定语。 e.g. Who will do it doesnt matter.What

4、 we need is more water.Which is better remains to be seen.Who he is is still not known to us.Where the library is to be built has not been decided yet.Why she was late for school is quite clear now.Which plan is better will be announced later.作主语作宾语作主语作表语作地点状语作原因状语作定语what, who, whom, which(连接代词); wh

5、atever, whoever, whomever, whichever这一类连接词与what, who, whom, which(连接代词)的用法一样，在句中可作主语、宾语、表语和定语。但语气较强，有“凡是，不管，无论”之意。Whatever he said wasnt true.Whoever guesses what I have in my hand may have it.Whichever book you choose is yours.作宾语作主语作定语 whatever, whoever, whomever, * what & whatever who & whoever w

6、hich & whichever引导名词性从句的区别1._ is worth doing is worth doing well.2. _we need is more time.3._ made the long distance call to him is not important.4._ breaks the law will be punished. whatever/whoever/whichever等引导的名词性从句不含有疑问意义，相当于名词后加一个定语从句，而what/who/which等引导的名词性从句都含有疑问意义。WhateverWhatWhoWhoever * wha

7、t & whatever引导名词性从句的区别1. 注意: 上述例句中的主语从句都是放在句首, 但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。 例如: It is a pity that she has made such a mistake. 她犯了这样一个错误, 真是遗憾。 注意: 上述例句中的主语从句都是放在句首, 但有时为了Can you rewrite the following sentences.1.That the earth turns around the sun is known to all.2. That price wi

8、ll go up is certain.3. That they are badly in need of help is quite clear. It is known to all that the earth turns around the sun.It is certain that price will go up .It is quite clear that they are badly in need of help.Can you rewrite the following It + be + 形容词 that从句It is necessary that 有必要It is

9、 important that . 重要的是It is obvious that 很明显It + be + -ed分词 that从句It is believed that 人们相信It is known to us/all that . 众所周知It has been decided that 已经决定用it形式主语的that从句有以下四种不同的搭配：It + be + 形容词 that从句It is neIt + 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 th

10、at 事实是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It + be + 名词 that从句It is com 5) . 用于It is important / natural / necessary / impossible that.句型中, 主语从句应使用虚拟语气, 谓语动词用“should + 动词原形”的形式, should有时有感情色彩。 5) . 用于It is important / na注意问题1）主语从句置于句首时，连词不可省略；但置于句末，用it 作

11、形式主语时，连词that 可省略。True or false:They should like each other is natural.That they should like each other is natural.It is natural they should like each other.FT T 注意问题1）主语从句置于句首时，连词不可省略；但置于句末，用2). 主语从句置于句首时，只能用whether,不能用if;但置于句末，用it 作形式主语时,也可用if .True or false:If Mary really heard him was doubtful.It

12、 was doubtful if Mary really heard him.F T 2). 主语从句置于句首时，只能用whether,不能用if3).主语从句要使用陈述语序,不能用疑问语序. e.g. How he succeeded is still a puzzle.What he wants is a book.3).主语从句要使用陈述语序,不能用疑问语序.1.主语从句通常被看作一个整体,主句的谓语动词用 单数形式. That they will come _certain.2.What 引导主语从句时,主句谓语动词的单复数由表语的单复数决定. What he wants _these

13、 books. What he wants _ some water.主语从句的主谓一致isareis1.主语从句通常被看作一个整体,主句的谓语动词用2.What 3.what 与that 在引导主语从句时的区别 what 在从句中充当句子成分，如主语、宾语、表语，而that 则不然。 1)_ you said yesterday is right. 2) _ she is still alive is a consolation. WhatThat 3.what 与that 在引导主语从句时的区别Wha1.Where shall we spend the holiday isnt decid

14、ed.2.You have made a mistake is a fact.3.That is certain that we can win.4.No matter who leaves the room last ought to turn off the lights.5.If the policemen will come is not certain.we shallThat you haveIt isWhoeverWhether改错练习1.Where shall we spend the hol 1 . _makes this shop different is that it

15、offers more personal services. A What B Who C Whatever D Whoever 练习 1 . _makes this shop diffeThese wild flowers are so special that I would do_ I can to save them. A whatever B that C which D whicheverThese wild flowers are so spec3 _in the regulations that you should not tell people the passport o

16、f your e-mail account. A What it required B What requires C It is required D It requires3 _in the regulations that 1. It is pretty well understood _ controls the flow of carbon dioxide in and out the atmosphere today. A. that B. when C. what D. how考题链接1. It is pretty well understoo2. _ made the scho

17、ol proud was _ more than 90% of the students had been admitted to key universities. A. What; because B. What; that C. That; what D. That; because2. _ made the school proud3. _ he referred to in his article was unknown to the general reader. A. That B. What C. Whether D. Where3. _ he referred to in h

18、i4. parents say and do has a life-long effect on their children. A. That B. Which C. What D. As4. parents say and do 5. _ you dont like him is none of my business. A. What B. Who C. That D. Whether6. _ he said at the meeting astonished everybody present. A. What B. That C. The fact D. The matterCA 5

19、. _ you dont like him 7. _ the 2016 Olympic Games will be held in New York is not known yet. A. Whenever B. If C. Whether D. That 8. _ well go camping tomorrow depends on the weather. A. If B. Whether C. That D. WhereCB 7. _ the 2016 Olympic Ga 9. _ leaves the room last ought to turn off the lights.

20、 A. Anyone B. The person C. Whoever D. Who 10. _ is a fact that English is being accepted as an international language. A. There B. This C. That D. ItCD 9. _ leaves the room la 11. _ in the newspaper that the price of food will go up. A. It says B. It is said C. It has said D. He is said12. It worried her a bit _her hair was turning grey. A. while B. that C. if D. forBB 11. _ in the newspaper th 13. The Foreign