We haven't seen Jim for several days.What do you think has happened to him 为什么是has happened而不是will happen
问题描述：
We haven't seen Jim for several days.What do you think has happened to him 为什么是has happened
而不是will happen
答
强调对现在的影响，所以用现在完成时。
答
好几天没见他了.你认为这几天他身上发生什么事情了?
这是过去发生,不是将来发生,所以用has happened 现代完成时,不用将来时.
请及时采纳,多谢!