初中英语 宾语从句专题复习

3．从时态的角度来看。当if和when作为连接词时，应注意引导宾语从句：从句谓语动词的时态应根据主句的时态进行相应的变化。if和when作为从属连接

单词时，引导条件和时间状语从句。如果主句的谓语动词在一般未来使用，那么从句的时态应用通常在现在表示未来。

e.g. I think (that) differences are not important in a friendship.

An old lady said (that) she found a job as a foreign language teacher.

They don’t know if (是否)we are going hiking next weekend

Could you tell me when (什么时候)(什么时候)the train arrives ?

We’ll go to the Great Wall if (如果) it doesn’t rain tomorrow.

=If doesn’t rain tomorrow, we’ll go to the Great Wall.

They knew each other when（当……时候）they were children.

=When they were children

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Tags：从句   宾语   时态