(1) Since + S + 过去式,S + 现在完成式

例句:Since he went to senior high school, he has worked very hard.

自从他上高中,他一直很用功。

Jacques Arnold has been a member of parliament since 1987

雅克·阿诺德自1987年以来一直是议会议员。

Since I separated from my husband I have gone a long way.

自从我和我丈夫分开后,我的生活发生了很大的变化。

(2) It is +--- + since +持续性谓语动词(表否定)

例:It is three years since she lived here. 她已三年不住这儿了。

It's only a year since I last saw the child and he's grown so tall.

这孩子一年不见,长这么高了。

(3) It is + --- + since S + 瞬间谓语动词(表肯定)例:

It is years since I stopped smoking).我戒烟已经数年了。

It is nearly two years since I came here.

我来这儿快两年了。

since的三个必考句型精讲