为帮助大学生学到权威的英语知识，本网站特提供以下资料：
不定式不带to的问题
1)在情态成语之后，即在would rather/would sooner/would(just) as soon(宁愿)，may/might as well(不妨)，cannot but/cannot help but之后。例如：?
You can’t help but respect them.?
Since it’s a fine day we might as well walk.?
2)在“使役动词+宾语”之后，即在let, have, make之后。例如：?
Let there be an end of this misunderstanding.?
He won’t have us criticize his work.?
Abby made him stay to tea.?
3)在“感觉动词+宾语”之后，即在see, hear, observe, notice, feel, watch之后。例如： ?
We feel the house shake.?
I didn’t hear you say that.?
4)在介词except/but之后?
如果except/but之前有动词do的某种形式，其后通常用不带to的不定式，否则带to。例如：?
They did nothing except work.?
There’s no choice but to wait.