宾语从句和表语从句要点归纳

宾语从句和表语从句

一、宾语从句要点归纳

★ 宾语从句的语序必须是陈述语序。

★ that在引导宾语从句时无词义，也不充当任何成分，且通常可以省略。但如果含有两个或两个以上的并列宾语从句时，通常只有第一个从句的that可以省略，其余从句的that一般不能省略。如：

My uncle said (that) he would come and that he would also bring his son.

★ whether和if都意为“是否”，通常情况下，二者都可以引导宾语从句；但在介词之后或与or not连用时，只能用whether。注意：当whether与or not不连在一起时，口语中可用if取代whether，当然也可以用whether。如：

I don't know if / whether there will be trains any more.

They are worrying about whether they can get there in time.

I don't know whether or not I should take his advice.

I'm not sure if / whether the train will arrive on time or not.

★ 有时可用it作形式宾语，而把真正的宾语从句后置。如：

We have made it clear that we will learn to deal with various difficult problems.

★ 在第一人称I / we与动词

think, expect, believe, guess, suppose等连用，后接宾语从句时，通常将从句的否定转移到主句谓语动词，形成否定前移。如：

I don't suppose you're used to this diet.

二、表语从句要点归纳

★ 表语从句一定要用陈述语序。

★ 可接表语从句的词除系动词be外，还有

appear, become, look, remain, seem, sound等连系动词。如：

The boy has remained where you told him to stand for over an hour.

★ that和what在引导表语从句时，作用和意义都不相同。that本身没有词义，在句中只起连接作用，不充当句子成分；what则表示“所??的（人或事）”，在表语从句中充当主语、表语或宾语等。如：

My idea is that this plan should be carried out immediately.

My hometown is no longer what it used to be.

★ if不可以引导表语从句，但whether可以引导表语从句。如：

The question is whether your uncle will offer help

to us.