英语翻译It is five years since he became a soldier.他当兵已经五年了.It i

英语翻译
It is five years since he became a soldier.他当兵已经五年了.
It is five years since he was a soldier..他不当兵已经五年了.
It is ten years since I smoked.表示“我戒烟十年了” （此处为延续性 ）
It is ten years since I started smoking.则表示“我吸烟十年了”.（此处为非延续性 ）
也就是说延续性反译 非延续性直译 另外,以上的is都可以改成has been吗?
对于此题：2.They asked me to have a drink with them.I said it was nine years since I______a good drink.
A.enjoyed B.was enjoying C.had enjoyed D.had been enjoying
此处的enjoy究竟可不可延续?根据题意,应该反译.如果不可延续,不是选B吗?为什么答案是C呢?C是个什么东西?对于此句The door has been opened(不是has been open){这里的has been opened表示的是短暂还是延续?
另外,对于It is 3 years since I tidied up smoking.It is 3 year since I had tidied up smoking.分别是延续还是非延续.分别怎么翻译?
再另外It is 5 years since I have lived here.此句有错吗?since后面不一定跟过去时句子吗?
tidy up 是 give up 我搞错了
追问：
首先，对于此类句子有一个明确的规律吗？延续性直译？非延续性反译？还是不能这么看，一定得靠语感？另外become不是非延续性而was是延续性吗？我怎么觉得你倒过来说了？2.They asked me to have a drink with them.I said it was nine years since I______a good drink.
A.enjoyed B.was enjoying C.had enjoyed D.had been enjoying
这句为什么要用C而不用B呢？（还是不懂）如用B成了什么意思？
It is 3 years since I gived up smoking.It is 3 year since I have given up smoking.这样有错吗？分别是延续还是非延续。分别怎么翻译？