重庆教师招聘《英语学科知识》：英语语法高频考点——定语从句

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一、表语从句

（一）含义

在句子中作表语的从句叫作表语从句。

（二）引导词

1. 可接表语从句的连系动词有 be, look, seem, sound, appear 等。

At that time, it seemed as if I couldn’t think of the right word.

You look just as you did ten years ago.

2. 从属连词 that, whether, as, as if / though。 

It sounds as if someone is knocking at the door.

The trouble is that I have lost his address.

Another important difference is whether schools are state schools or private schools.

3. because, why 也可引导表语从句。

That’s why he got angry with me.

He has heart disease. That is because he has been smoking too much.

4. 连接代词：wh- 类和 wh-ever；连接副词：when, where, how, why。 

The problem is who we can get to replace her.

That was where we camped last time.

5.reason作主语时的表语从句。

reason作主语时，表语从句需要用that引导，一般不用why或because引导。但reason之后的定语从句常由why引导，从而构成“the reason why...be that...”句式。

The reason for the traffic accident was that the driver was drunk.

The reason why he didn’t pass the exam was that he was too careless.

【试题再现】

（2020重庆）1. The reason why he hasn’t come is______.

A. because his mother is ill

B. because of his mother’s being ill

C. that his mother is ill

D. for his mother is ill

【金标尺答案】C

【金标尺解析】本题考查名词性从句——表语从句。

句意：他没来的原因是他母亲生病了。此题为表语从句，句型：The reason why...is that...，故C项符合题意。

A、B、D项为干扰选项，故排除。

故本题答案为C。