主语从句和表语从句
知识点
1.名词性从句引导词的选择
选择原则“缺什么，补什么，什么不缺，用that”
“什么不缺，用that”的意思是：如果从句中不缺任何成分，而且句意完整时，就用that来引导主语从句或表语从句以及其他的名词性从句。
2.whether 意为“是否”，引导的主语从句放在句首，不能用if 代替；但当用
it 作形式主语时，whether引导的主语从句放在句中或句末，此时可换用if. It is doubtful whether there’ll be any seats left.说不上是否还有座位了。
3.that 引导主语从句时，只起连接作用，不作任何成分，没有实际意义。在句
首时不可省略。What引导主语从句时既要起连接作用，又要在从句中作主语或宾语，在任何情况下都不能省略，它具有具体意义，表示“什么，所……
的（事、物、话）”，相当于all that/ everything that. Which引导主语从句也作成分，它表示选择的意义，常译为“那个”。如：That he survived in the earthquake is a miracle. 他在地震中幸免于难，这是个奇迹。
4.关系代词what, which, who引导主语、表语从句时含有疑问意义，而whatever,
whichever, whoever在引导名词性从句时，往往比what, which, who更强调，不表示疑问意义。而且whatever=all that/everything that; whichever=anything that; whoever=anyone who.另外，whatever=no matter what时引导状语从句。
如：Whatever is worth doing at all is worth doing well.凡是值得做的事情都值得好好地做。
I语法填空。使用正确连接词补全下列句子。
1.They lost their way in the forest and ______made matters worse was ______
night began to fall.
2.|
3.______ drives after drinking should be punished.
4.It is said ______ Peter will have a chance to travel abroad next month.
5.______ we fear when traveling in summer is the sudden change of weather.
6.______ we will go camping tomorrow is up to you.
7.I read about it in some book or other, does it matter ______ it was
8.______ of you comes in will be given a prize.
9.______ he didn’t come yesterday is unknown.
10.______we will go tomorrow hasn’t been decided yet.
11.______ will be asked to accomplish the task is still discussed.
II. 测试题
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1. ---I’ll ask the teacher about the attributive clause. I’m very puzzled about it.
---That’s just ______most of our classmates have doubt.
A.what
B. why
C. where
D. how
2. His father got him a job in a bank but soon it became clear ______ he was not fit for that kind of work.
A. why
B. what
C. whether
D. that
3. It even leaves the scientists in wonder ______ they should call the newly-born creature, which looks half-human and half-animal.
A. that
B. why
C. what
D. how
4. The brave national spirits showed in the film The Flowers of war are ______deeply moved the audience.
A. which
B. that
C. what
D. who
5. ______ is surprising is that there are so many Chinese restaurants in Toronto.
-
A. It
B. That
C. Such
D. What
6. ---Are you still thinking about yesterday’s party
---Oh, that’s______.
A.what makes me feel excited
B. whatever I feel excited about
C. how I feel about it
D. when I feel excited
7. Faced with challenges, you should believe your courage is ______ makes a difference.
A. how
B. that
C. which
D. what
8. ______ is obviously right is to give all children equal opportunities to develop their special gift.
