人教新课标必修三-Unit-4语法学案-语法知识----名词性从句III教学文案.doc

人教新课标必修三-Unit-4语法学案-语法知识----名词性从句III

学习目标：语法知识----名词性从句III
学习重点：主语从句
主语从句是在复合句中充当主语的从句，引导主语从句的词有连词that, whether；连接代词who, what, which；连接副词when, where, how, why等。主语从句做主语谓语动词一般用单数。
That he will succeed is certain. Whether he will go there is not known.
What he said is not true. When the meeting will be held has not been decided yet.
为了避免主语显得过长，可以用it作为句子的主语，把主语从句移到句子的末尾。
It is said that President Jiang will visit our school next week.
It hasn't been decided when the new restaurant will open.
It is hard to understand why he failed in this examination.
It is not clear how gold was found there.
主语从句中需注意的问题：
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。被强调部分指人时也可用who/whom。
It was in the morning _____ the murder took place.　
It was at 7 ______ I got home. It is John ____ broke the window
It is a pity ______ you didn’t go to see the film.
It is the house _____ I live. It is the house _____ I visited ten years ago.
2. 用it 作形式主语的常用结构
(1) It is ＋ 名词 ＋ 从句
It is an honor that... It is a pity that...
(2) It is ＋ 形容词 ＋ 从句
It is important that… It is strange that…
(3) It is ＋ 不及物动词 ＋ 从句
It seems that… ________ It happened that… _________
(4) It ＋ 过去分词 ＋ 从句
It is reported that… It is said that… It is announced that
3. what 与that 在引导主语从句时的区别
what 引导主语从句时在句时在从句中充当句子成分，如主语．宾语．表语，而that 则不然。
What you said yesterday is right. That you said so yesterday is right.
______ he failed in the exam disappointed his parents.
_______ disappointed his parents is that he failed in the exam.
试试身手吧：
1．______ they are most interested in is how they can produce more and better cars.
A. That B. What C. Whatever D. Which
2．______ we’ll go camping tomorrow depends on the weather.
A. If B. Whether C. That D. Where
3. ________ makes mistakes，we must correct them.
A. What B. That C. Whoever D. Whatever
4. ______ surprised me most was that such a little boy of seven could play the violin so well.. A. That B. What C. Which D. When
5. ________ we go swimming every day ________ us a lot of good.
A. If…do B. That…do C. If…does D. That…does
6. ________ the boy didn't take medicine made his mother angry.
A. That B. What C. How D. Which
7 ____ we can't have seems better than what we have.
A. What B. Who C. That D. whose
8. ____ you don't like him is none of my business.
A. What B. Who C. That D. Whether
9. ____ we'll go camping tomorrow depends on the weather.
A. If . B. Whether C. That D. Where
10. _______is going to do the job will be decided by(由……决定） the CEO.
A. That B. Why C. How D. Who
11. _______ we'll finish translating the book depends on the time.
A. When B. Why C. What D. That
12. _______ team will win the match is none of my business.
A. Which B. That C. If D. How
13.(北京2006) ---Could you do me a favor? ---It depends on ___ it is.
A. which B. whichever C. what D. whatever
答案：BBCBD AACBD AAC