Question

这2道英语题为什么选这个？求详解!急！！！！！

You___A_____him so closely;you should have kept your distance.
A shouldn't have been following B. shouldn't follow
C mustn't follow D couldn't have been following

Not until the game had begin__D____ at the sports ground.
A had he arrived B would he have arrived
Cshould he have arrived D did he arrive

Answer 1

A表示：本不应该跟这他，而事实上却跟着他
第二题要理清事情发生先后，比赛开始 发生在 他到运动场 之前，整个事情发生在过去，一定要用过去式，所以 他到运动场 用过去式；比赛开始 用过去完成时。所以用did

Answer 2

should have done sth. 表示本应该做某事 这里是说 你本就不应该跟他太过亲密的接触，你应该要保持距离。 第二题是 考倒装 not until引导的从句位于句首时，主句要倒装。。 懂了么？？ 分给我吧 亲~~~~