名词性从句用法讲解与专项练习题及答案

名词性从句用法讲解与专项练习题及答案

名词性从句包括主语从句、宾语从句、表语从句和同位语从句。高考常从连接词的选择、语序、语气、时态等方面来考查。名词性从句中的连接词有连词that / whether / as if，连接代词what / who/ which /whose / whatever / whoever / whomever / whichever，连接副词where /when /why / how / wherever / whenever。

第1讲引导名词性从句的连接词

考点1. 引导名词性从句的连接词有哪些

有学生认为，引导同位语从句只能用that, 这句话对吗？先看下面几个句子。

①I have no question that he will come.

②I have a question whether he will come

③I have a question when he will come.

我们可以看出：上面三个句子中question后面都是同位语从句，都是说明question的内容的。

在句①中，同位语从句的原句是陈述句，由that引导；在句②中，原句是一般疑问句，由whether引导；

在句③中，同位语从句的原句是特殊疑问句，特殊疑问词也起着连接作用。

其实，所有名词性从句的连接词都有上面的三种情况。

宾语从句：

I don’t know that he will come.

I don’t know whether/if he will come.

I don’t know when he will come.

表语从句：

What I don’t know is that he will come.

What I don’t know is wheth er he will come. What I don’t know is when he will come.

主语从句

That he will come is obvious.

Whether he will come isn’t known yet.

When he will come isn’t known yet.

1. 【2010浙江】It is uncertain ______ side effect the medicine will bring about, although about two thousand patients have taken it.

A. that

B. what

C. how

D. whether

2. 【2012全国新课标】It is by no means clear ______ the president can do to end the strike.

A. how

B. which

C. that

D. what

3. 【2012山东】It doesn’t matter ______ you pay by cash or credit card in this store.

A. how

B. whether

C. what

D. why

4. 【2013陕西】It remains to be seen ______ the newly formed committee’s policy can be put into practice.

A. that

B. which

C. what

D. whether

5. 【2009天津】It is obvious to the students ______ they should get well prepared for their future.

A. as

B. which

C. whether

D. that

6. 【2012江西】It suddenly occurred to him ______ he had left his keys in the office.

A. whether

B. where

C. which

D. that

考点2. 引导词that的省略问题

主语从句、表语从句、同位语从句中连词that不能省略。

That they are good at English is known to us all. The problem is that we don’t have enough money. She expressed her hope that they would come to China one day.

只有宾语从句中的连接词that可省略，但在以下几种情况中that也不能省略：

A. 当that从句和主句谓语动词之间有插入词语或者从句主语之间有插入语时，that不可省略。

He judged that, because he was a child, he did not understand.

B. 当两个名词性从句并列作宾语时，后面的that不能省。

Everyone knew what happened and that she was worried.

C. 当that作介词宾语时，that不可省掉。

The reason lies in that she works harder than the others do.

7. ______ we need more practice is quite clear.

A. When

B. What

C. That

D. /

8. ______ fashion differs from country to country may reflect the cultural differences from one aspect.

A. What

B. That

C. This

D. Which

9. 【2010上海】One reason for her preference for city life is ______ she can have easy access to places like shops and restaurants.

A. that

B. how

C. what

D. why

10. The reason why I didn’t go to Shanghai was ______ a new job.

A. because I got

B. because of getting