what，where，why，who，when的用法，什么时候用什么呢？

Question

语法知识如何正确使用

Answer 1

what，where，why，who，when的用法非常广泛。
既可以用于各种疑问句的先行代词， 也可以用于各种从句的代词。
1） 用于疑问句：
What are you doing now?
Where are you?
Why do you do this?
Who are you?
When do you come?
2) 用于从句非常广泛， 各种从句都有可能，仅举例如下：
1) That’s what I want.
2) That’s the place where I lived.
3) Can you tell me why you did that?
4). Do you know who she is?
5). I don’t know when I have time to see her.