when和while的用法,下面句子能互换吗?
问题描述:
when和while的用法,下面句子能互换吗?
While we were having breakfast,Tommy found two small coins on the floor.--句首“while”能换成“when”?
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希望能说说他们的用法区别,
答
这里能互换.
WHILE比较着重强调两个动作的同时发生.
WHEN则可用于两个动作一前一后.一个正在进行,一个已经完成.