很多同学在学英语时都感觉语法困难，想要提高成绩，打好语法基础必不可少！新东方在线整理2025年6月英语四级语法：表语从句解说，供各位考生参考。
2025年6月英语四级语法：表语从句解说
表语从句就是用一个句子作为表语。说明主语是什么或者如何，由名词、形容词或等于名词或形容词的词或短语充当表语。
表语从句的概念：
表语从句放在连系动词之后，充当复合句中的表语。
表语从句的构成：
关联词+简单句
引导表语从句的关联词的类型：
可接表语从句的连系动词有be，look，seem，sound，appear等。
China is no longer what she used to be.
今日的中国不再是过去的中国了。
The question remains whether they will be able to help us.
问题还是他们能否帮大家。
At that time，it seemed as if I couldnt think of the right word.
当时，我好像如何也想不出一个适合的字眼来。
从属连词whether，as，as if / though引导的表语从句。
He looked just as he had looked ten years before.
他看着还与十年前一样。
It sounds as if someone is knocking at the door.
听起来仿佛有人在敲门。
because，why引导的表语从句。
Thats because he didnt understand me.
那是由于他没理解我。
Thats why he got angry with me.
那正是他对我生气是什么原因。
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缘由时要用that引导，不适合用because.
The reason why I was sad was that he didnt understand me.
我难过是什么原因他没理解我。
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.
问题是大家能找到哪个去替换她呢。
The question is how he did it.
问题是他是怎么样做此事的。
That was what she did this morning on reaching the attic.
那就是她今晨上了阁楼干的。
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。
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。容易见到的词有：advice，suggestion，order，proposal，plan，idea等。
My suggestion is that we start early tomorrow.
我的建议是大家明天一早就出发。
应注意的问题：
连系动词be，appear，seem，look等之后可以跟表语从句。
It was because he didnt pass the exam.
那是由于他没通过考试。
It seemshe was late for the train.
看来他没搭上火车。
It appears that she was wrong.
看来她错了。
It seems to me that we should answer for this.
在我看来，大家好像应该对此事负责。
It appears to her that he wants to teach us all he has.
在她看来，他好像要把他所会的都教给大家。
引导表语从句的引导词有以下几类。
wh-疑问词
My question is who left.
我想问的是哪个离开了。
What I wonder is when he left.
我想了解他是何时离开的。
Thats what he wants.
那是他想要的。
This is where they once lived.
这就是他们过去住过的地方。
That is why he didnt come here.
这就是他为什么没到这儿来是什么原因。
whether
My question is whether he left.
我的问题是他是不是离开了。
注：if不可以引导表语从句。
that
The fact is that he left.
事实是他离开了。
注：引导表语从句的连词that间或可以省略。
The truth isI didnt go there.
事实是我没去那儿。
because，as，as if，as though
Its just because he doesnt know her.
这是仅仅由于他不认识她。
Things are not always as they seem to be.
事物并不一直如其表象。
He looks as if hes tired.
他仿佛累了。
以上就是新东方在线大学英语四级语法频道给大伙收拾的“2025年6月英语四级语法：表语从句解说”内容，期望可以给大伙备考带来帮助。
