Tom, you from taking a hand in that affair, you in prison.A. if I didn’t stop; would hav

Tom, you from taking a hand in that affair, you in prison.
A. if I didn’t stop; would have stayed
B. had I stopped; would be staying
C. shouldn’t I have stopped; would stay
D. if I hadn’t stopped; would have stayed

A. if I didn’t stop; would have stayed(答案→)B. had I stopped; would be stayingC. shouldn’t I have stopped; would stayD. if I hadn’t stopped; would have stayed解析：考查条件句中虚拟语气的倒装。在条件句中如果与过去事实相反，条件句中使用过去完成时，后面的主句使用“情态动词+have done”;如果去掉if，条件句要使用部分倒装形式。另外还要注意主句和从句的时间的差别，要注意错综条件句的用法。本题从句表示的是过去的时间，主句表示的是现在的事情。句意：Tom如果你没有阻止你参加那个事情，你现在就会在监狱里了。故B正确。

和我的回答一样，看来我也对了