It is three years since he smoked.

It is three years since he smoked. It is five years since he smoked It three years since I smoked.翻译 He smoked since 2 years ago .怎么翻译?等不等于It is 2 years since he It is ten years since he smoked or didn't smoke is your grandpa still smoked?----no ,It's years s(since) he 英语翻译是不是翻译为：it is 3 years since he has smoked. 求解英语翻译：It's 2 years since he smoked. 翻译 It's five years since he smoked It has been 2 years since It's three years since I smoked 这句话什么意思,理解不了 t is three years since he joined the League?it is three year 求It is three years since he worked in his office.解释下since