when在句子中是什么成分,相当于名词+介词吗??

谢谢解释!

when 作为关系副词,在定语从句中做时间状语,相当于介词+关系代词
I still remember the year when we met for the first time. (when= in which )
Sunday is the day when very few people go to work(when= on which)
when做疑问副词,When can you come?
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第1个回答  2011-03-26
一般做连接副词,表时间,相当于while。
可引导从句
第2个回答  2011-03-27
when一般做状语或补语
第3个回答  2011-03-26
一般做状语,相当于at what time
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