It's three years since I smoked 这句话什么意思,理解不了

It's three years since he was married .的翻译 英语翻译还有这句 It'It's three years since I was a solder.It'It's three years since I joined the army It's three years since we saw each other last time = We _____ _____ each other for three years lucy has been away from hei home for three years等于 it's three years ______lucy ___ __________ 动词适当形式填空 It's three years since he ______.(leave)为什么呢? It's about three years since they＿here.是填came还是have been? It's almost three years since we met last time.翻译 it's three years since he left wuhan.改同义句 He l_____young!It's an o_____photo.my father is forty-three years o__now. It's three years since I smoked 这句话什么意思,理解不了 it is three years since we____(most recently) met each other at david's part It three years since I smoked.翻译 It was three years before he came 同义句替换John’s grandmother has been dead for 3 years.It's three years ____ John's grandmother _____. it's three years since i came to the school 中's代表的是什么的缩写 句子中的S是has还是is(或was)?It's three years since he leave here.为什么? since后加现在完成时和一般过去时的区别比如It's three years since he has worked there.和It's three years since he worked there.有什么区别 it's four twenty-three