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when可以引导条件状语从句吗

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when可以引导条件状语从句吗
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when 可以引导条件状语从句,和if 同事出现的时候,if 另外,when 用于行将发生的事,if 用于不肯定是否会发生.试比较:I'll ask her when she comes.=you are sure that she will come.I'll ask her if she comes.=you are not sure whether she will come or not.补充一点:when 还有既然,考虑到得意思.Why do you want more money when you have got enough already?既然你已经有足够的钱了,为什么还要更多呢?