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时间状语从句since的用法
分类:语法详解 作者:本站原创

时间状语从句since的用法和例句详解如下。

since: 自从…..起,可引导时间状语从句,要注意时态的用法。

1.若某事自从过去起持续到现在,则从句要用一般过去时,主句用现在完成时或一般现在时

She has worked here since she left school. 

自从她离开学校起,她一直在这里工作。

They have stayed in this city since they got married. 

自从他们结婚起,他们一直呆在这个城市。

I haven’t seen her since I left the small town.

自从我离开那个小镇起,我就一直没见过她。

It is ten years since you left. 

自从你离开已经有十年了。

(此句型主句常用一般现在时: It is +时间段 +since从句)


主句也可用现在完成进行时

Ted has been working since he arrived.

自从泰德到之后,就一直在工作。


2.若描述过去的事(过去的事持续到过去某段时间),则从句用一般过去时或过去完成时

She had been happy since she met him. 

自她遇见他起,她一直挺高兴。

Since we came back, he had been very busy. 

自从我们回来起,他一直非常忙。

They had lived in a hotel since their house burnt down. 

自从他们的房子烧掉之后,他们一直住在旅馆里。

I was a year since I had seen her.

自从我见她起已有一年时间。


since的时间状语从句用法,有一些复杂,需要好好体会。延伸阅读:since for现在完成时



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