许文强的爷
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：
例句：
The question remains whether they will be able to help us.
问题还是他们能否帮我们。
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。
2. 从属连词whether，as，as if / though引导的表语从句。
例句：
He looked just as he had looked ten years before.
他看起来还与十年前一样。
It sounds as if someone is knocking at the door.
听起来好像有人在敲门。
3. because，why引导的表语从句。
例句：
That's because he didn't understand me.
那是因为他没有理解我。（That's because…强调原因）
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）
4. 连接代词who，whom，whose，what，which，whoever，whatever，whichever
连接副词 where，when，how，why
例句：
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。
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。
小嘉菜菜子
有三大类 1.名词性从句 2.定语从句 3.状语从句 名词性从句中分： 1.主语从句：例,it is important to read book.(形主it作主语,真正的主语是to read book) that air has pressure was known long ago.(关联词that引导的句子that air has pressure作主语从句) 2.宾语从句：I think it necessary that he should do his homework.(形式宾语it引导的) I'm sure that my test will succeed.(sure后用that引导的宾从) 3.表语从句：系动词后的从句 it may be as you say(be是系动词,后面用as引导的) this is that he is too young to go to school.(有系动词is,后面由that引导的表语从句) 4.同位语从句：同位语从句是对前面名词的解释说明,如： The facts that he had done his homework.(事实就是he had done his homework,是对前面the facts的解释,是什么事实) 定语从句：在句子中起定语作用,修饰剧中的名词或代词的从句叫定从 例：the man (who is shaking hands with my father) is my teacher.(括号中就是定从,修饰限定the man) BeiJin is a city (which has a long history).(括号中是定从,修饰the city) 状语从句：在复合句中担任状语成分的从句叫状语从句 例：I will tell her about that (when i see her).为时间状从 just stay (where you are).为地点状语 Because he is ill,he is absent today.为原因状语 这也很局限,其实要讲的还很多,你可以多看看语法书之类的
