what在从句中充当主语或宾语，意思是：...（所）...的

Practice:

他被选中了使我们很开心。

她是否有时间来还是个问题。

谁将被派去那儿还没有定下来。

我们所需要的是更多的时间。

他去了哪儿没人知道。

宾语从句

在复合句中起宾语作用的从属句称为宾语从句。

1. 作动词的宾语

(1) 由that引导的宾语从句（that 通常可以省略）,例如：

I heard that be joined the army.

She suggested ( that ) he do it at once.

(2) 由what, whether (if) 引导的宾语从句，例如：

1) She did not know what had happened.

2) I wonder whether you can change this note for me.

(3) 动词＋间接宾语＋宾语从句。例如：

She told me that she would accept my invitation.

2. 作介词的宾语

Our success depends upon how well we can cooperate with one another.

It depends on whether we will go.

3. 作形容词的宾语

例如：I am afraid (that) I've made a mistake.

that 引导的从句常跟在下列形容词后作宾语：

Anxious, aware, certain, confident, convinced, determined, glad, proud, surprised, worried, sorry, thankful, ashamed, disappointed, annoyed, pleased, hurt, satisfied, content 等。也可以将此类词后的that 从句的看作原因状语从句。

4. It 可以作为形式宾语

It 不仅可以作为形式主语，还可以作为形式宾语而真正的宾语that 从句则放在句尾，特别是在带复合宾语的句子中。 例如：