定语从句when和which

问题描述:

定语从句when和which
定语从句里when which怎么用?
比如May the forth is the day which we Chinese people will never forget.为什么不用when呢,明明前面是the day.

when 是疑问副词
而 which是疑问代词
你应该知道定语从句中that who 之类的在从句中充当一定的成分吧
比如说 This is the book that I bought yesterday .
这句话中的that指的是这本书.你再看这句话的定语从句部分
I bought yesterday .缺少了宾语吧.
★★★你要记住★★★
需要用疑问代词的句子,定语从句的成分一定是不完整的
如果你读完定语从句,发现很完整.那就得填写when where why一类的
疑问副词了.但有特殊情况,先行词前面要是有the day ,something一类的词必须用which
再看你的句子
May the forth is the day which we Chinese people will never forget.
虽然这句子中的定从很完整
但是有the day