请问because,as,since.三个单词用于原因条件状语从句有什么区别

问题描述:

请问because,as,since.三个单词用于原因条件状语从句有什么区别
 
1个回答 分类:英语 2014-11-04

问题解答:

我来补答
He was busy,so he didn't come.
可以变成以下句型:
1 As / since he was busy,he didn't come ------从句在前面.
2 He didn't come because he was busy -------从句在后面.
3 He didn't come,for he was busy -------从属句在后面,用逗号隔开.
这就是你想知道的区别.
 
 
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