僵尸秋水有声小说:什么是表语从句

表句从句就是"表句是个句子",同理,宾语从句,定语从句都这样理解.

表语从句放在连系动词之后,充当复合句中的表语/

下面是我找到的材料,参考一下吧.
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基本概念
1． 定义：用作表语的从句叫做表语从句。

2． 构成：关联词+简单句

3． 引导表语从句的关联词的种类：

(1) 从属连词that。如：

The trouble is that I have lost his address. 麻烦是我把他的地址丢了。

(2) 从属连词whether, as, as if。如：

He looked just as he had looked ten years before. 他看起来还与十年前一样。

The question is whether they will be able to help us. 问题是他们是否能帮我们。

注：从属连词if一般不用来引导表语从句，但as if却可引导表语从句，如：

All this was over twenty years ago, but it´s as if it was only yesterday.

这都是20多年前的事了，但宛如昨天一样。

能跟表语从句的谓语动词一般为系动词be, seem, look等。如：

It looked as if it was going to rain. 看起来天要下雨了。

(3)连接代词who, whom, whose, what, which, whoever, whatever, whichever

连接副词 where, when, how, why。

如：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。

重点疑难
1． 连词because可引导表语从句。如：

I think it is because you are doing too much. 我想这是因为你做得太多。

2． 在一些表示“建议、劝说、命令”的名词后面的表语从句中，谓语动词用虚拟语气。should+动词原形表示，should可省略。如：

My suggestion is that we (should) start early tomorrow. 我的建议是我们明天一早就出发。

句子的表语是由一个句子充当的,那么这个充当表语的句子就叫做表语从句
The fact is that he was cheated.
这是个系表结构的句子,the fact是主语,谓语是系表结构,表语是that he was cheated,这个that引导的句子就是表语从句.

宾补和双宾的区别先看下面两个句子
They elected him president.
I sent him a telegram.
第一个句子里面的him是elect的宾语,而president则不是elect的宾语,它是补充说明宾语him的情况.
第二个句子里面的him 依然是send的宾语,而telegram也是send的宾语

都忘的差不多了