雅思写作语法之表语从句基本介绍带给大家，语法不仅在雅思写作中占据着重要成分，在其他单项考试中也同样重要。下面，就和前程百利小编一起来了解一下吧。
(一)、表语从句的定义：
表语从句放在连系动词之后，充当复合句中的表语。
(二)、表语从句的构成：
关联词+简单句
(三)、引导表语从句的关联词的种类：
1. 连接代词 who，whom，whose，what，which，whoever，whatever，whichever
连接副词 where，when，how，why
The problem is who we can get to replace her.
问题是我们能找到谁去替换她呢。
The question is how he did it.
问题是他是如何做此事的。
That was what she did this morning on reaching the attic.
那就是她今晨上了阁楼干的。
2. 可接表语从句的连系动词有 be，look，seem，sound，appear等
The question remains whether they will be able to help us.
问题还是他们能否帮我们。
China is no longer what she used to be.
今日的中国不再是过去的中国了。
At that time，it seemed as if I couldn't think of the right word.
当时，我似乎怎么也想不出一个恰当的字眼来。
3. 从属连词 whether，as，as if / though引导的表语从句
It sounds as if someone is knocking at the door.
听起来好像有人在敲门。
He looked just as he had looked ten years before.
他看起来还与十年前一样。
4. because，why引导的表语从句
That's why he got angry with me.
那正是他对我生气的原因。(That's why…强调结果)
what引导的主语从句表示结果或名词reason作主语时，后面的表语从句表示原因时要用that引导，不宜用because.
The reason why I was sad was that he didn't understand me.
我难过的原因是他没有理解我。
That's because he didn't understand me.
那是因为他没有理解我。(That'sbecause…强调原因)
5. 从属连词 that
The trouble is that I have lost his address.
麻烦是我把他的地址丢了。
6. 使用虚拟语气的表语从句
在表示建议、劝告、命令含义的名词后的表语从句，谓语动词需用“should+动词原形” 表示，should可省略。常见的词有：advice，suggestion，order，proposal，plan，idea等。
My suggestion is that we (should) start early tomorrow.
我的建议是我们明天一早就出发。
以上就是雅思写作语法之表语从句基本介绍的详细内容，考生们在平时还是要多多练习写作，提高写作能力指日可待!希望考生能够考出满意的雅思成绩。更多雅思备考经验我们将会陆续为大家更新，欢迎咨询我们的热线电话400-890-6000。
