2008年9月2日

比较since和for

摘要： Since 用来说明动作起始时间，for用来说明动作延续时间长度。 I have lived here for more than twenty years. I have lived here since I was born.. My aunt has worked in a clinic si... 阅读全文

posted @ 2008-09-02 10:32 MutStory 阅读(232) 评论(0) 推荐(0)

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