引导宾语从句的关联词有连词：that，whether，if；连接代词：who，whom，whose，what，which；连接副词：when，where，why，how；关系代词：what。如：

I went in and asked if/whether they had a cheap suit.

我走进去问他们是否有便宜的衣服。

The professor asked who could answer the question.

教授问谁能回答这个问题。

Could you tell me where the booking office is？

你能不能告诉我售票处在什么地方？

She has got what she wanted.她要的东西得到了。

注意：

1.that 引导的宾语从句，在口语或非正式文体中常省略。如：

James said（that）he was feeling better.詹姆斯说他感到好些了。

2.在谓语动词、介词、动词不定式、分词、动名词之后都可以带有宾语从句。某些形容词如sure，happy，glad，certain，pleased 等之后也可以带有宾语从句。如：

We are talking about whether we admit students into our club.

我们正在讨论是否让学生加入我们的俱乐部。

He is glad that Li Ming went to see him when he was ill.

他很高兴在他生病的时候李明能去看望他。

3.在think，believe，suppose，expect 等动词的宾语从句中，否定不用在从句中，而是将think 等词变为否定形式。如：

I don’t think the film is interesting.我觉得这部电影没什么意思。

I don’t suppose we are going out tomorrow.我认为我们明天不会出去。

4.如果从句作宾语而后面还有补语，为了保持句子的平衡，用it 作形式宾语，而将宾语从句放在句尾。常跟这样的复合宾语的动词有：make，find，see，hear，feel，think，consider，regard，take…for granted等。如：

George made it clear that he opposed this project.

乔治已明确表示他反对这个项目。

They kept it quiet that he was dead.对他已经死亡的消息，他们秘而不宣。

I took it for granted that you’d stay with us.我想当然认为你会和我们待在一起。