查人人中国名人网莱万多夫斯基现在在哪:when的用法是主从句谓语动词时态一致吗？谢谢
来源：百度文库 编辑：查人人中国名人网 时间：2024/05/05 19:32:06
1. when 连接副词，“当。。。的时候”，
A.引导时间状语从句。
如: When he came in, Tom was sleeping.
B.引导主语/表语/宾语从句。
如：I don't know when he will be back.
When he will come back is unknown.
The question is when he will be back.
2. when 关系副词，引导定语从句，在从句中作状语。
如： I wil mever forget th eday when I jioned the army.
3. When 并列连词， “就在。。。的时候”
如： I was about to leave when the telephone rang.
通过以上用法可以看出前后句子的时态要根据具体情况来定，但在时间状语从句中，如果谓语是将来时要用一般现在或一般过去时。
如：When he comes back, I'll tell him the news.
when 可以在时间状语从句中充当关系词
如:I saw the accident when I went across the street.
可以在定语从句中充当关系副词
如:It is a good time when I was living with you.