【全球播资讯】since的用法四种句型_since的用法
科学教育网 2023-03-19 19:05:57
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有 关于since的用法四种句型_since的用法方面的知识，小编在此整里出来，给大家作为参考，下面就详细的介绍一下关于since的用法四种句型_since的用法的相关内容。
今天小编肥嘟来为大家解答以上的问题。since的用法四种句型，since的用法相信很多小伙伴还不知道,现在让我们一起来看看吧！
1、since的四种用法 1) since +过去一个时间点 (如具体的年、月、日期、钟点、1980, last month, half past six)。
2、 I have been here since 1989. 2) since +一段时间+ ago I have been here since five months ago. 3) since +从句 Great changes have taken place since you left. Considerable time has elapsed since we have been here. 4) It is +一段时间+ since从句 It is two years since I became a postgraduate student.。
