当两个句子都是进行时的时候,用while表示同时进行.
当一个是进行时另一个不是的时候,while和when都可以表示当.
比如He came in when/while I was reading.当我正读书的时候他进来了.
My brother is singing_____my sister is dancing
My brother is singing_____my sister is dancing
填whiel还是when
为什么?
填whiel还是when
为什么?
英语人气:881 ℃时间:2019-11-12 01:10:18
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