since
[英][sɪns][美][sɪns]
prep.
自从; 从…以来; 自从…之后;
adv.
以后,此后; 后来; (距今几年)以前; (从那时候起几年)以前;
conj.
因为; 既然; 自从…以来; 自从…的时候起;
副词 adv
(常用于现在完成时或过去完成时)
1.此后;从那时到现在
She left school three years ago and has worked has work as a nurse ever since
,她三年前毕业,从那时起便一直当护士。
介词 prep
1.(常用于现在完成时或过去完成时)自...以来,从...至今,自从
I haven't heard from him since last year.
我自去年以来未曾收到过他的信。
连接词 conj
1.(常用于现在完成时或过去完成时)自...以来,从...至今
It's been ten years since they married.
他们结婚到现在已经十年了。
She has been living a hard life since her husband died.
她自从丈夫死后,一直过着艰苦的生活。
2.既然;因为,由于
He must have taken the book since it isn't here.
他一定是把书拿走了,因为书已不在这里了。
Since it is so hot, let's go swimming.
既然天气这么热,我们去游泳吧。
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