Question

一个英语语法的问题.but与except后可接动词不定式,但要不定式均须省去TO,且前面要有实义动词.但怎么会出现hav

Answer 1

1.but 和 except 之前如果出现的是 do 的任何时态（比如说：did, does, is doing, have done...）but 和except 之后就是 省略to 的动词不定式.

例如：

I did nothing yesterday but watch TV.

I didn't know what to do but stand there.

2.but 和 except 之前如果出现的是其他动词,but 和except 之后就是to do .

I had no choice but to accept his suggestion.

I had nothing to say but admit.