___ you are very tired,you can take a rest.为什么用Since,而不用for_英语解答

___ you are very tired,you can take a rest.为什么用Since,而不用for

人气：287 ℃　时间：2019-10-19 14:41:42

解答

since 是既然的意思,如果是FOR 引导的原因状语从句,从句必须放在事件之后,即you can take a rest,for you are very tired.
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