what do you suppose _______to him?为什么是has happened不是to happen?

问题描述:

what do you suppose _______to him?为什么是has happened不是to happen?

suppose后跟完整从句 即what has happended to him
如果是to happen 应该是what is to happen to him
to之前一定要有比动词才能构成完整句 因为to不构成谓语

suppose 比happen 更多一点关心的意思

do you suppose 是插入语,
这里拿掉之后,句子还缺谓语.所以用has happened

suppose 的固定用法
你认为他出了是吗状况?(已经发生了)