1) 动词+ 不定式
afford、aim、appear、agree、arrange、ask、be、decide、bother、care、choose、come、dare、demand、desire、determine、expect、elect、endeavor、hope、fail、happen、help、hesitate、learn、long、mean、manage、offer、ought、plan、prepare、pretend、promise、refuse、seem、tend、wait、wish、under、take。
举例:
The driver failed to see the other car in time.
司机没能及时看见另一辆车。
I happen to know the answer to your question.
我碰巧知道你那道问题的答案。
2)动词+不定式 ;动词+宾语+不定式
ask、beg、choose、expect、hate、help intend like、love, need prefer、prepare、promise、want、wish…
I like to keep everything tidy.我喜欢每件东西都保持整洁。
I like you to keep everything tidy.我喜欢你年使每件东西都保持整洁。
I want to speak to Tom. 我想和汤姆谈话。
I want you to speak to Tom. 我想让你和汤姆谈话。
3) 动词+疑问词+to
decide、know、consider forget、learn、remember、show、understand、see、wonder、hear、find out、explain、tell。
例如:
Please show us how to do that.
请演示给我们如何去做。
There are so many kinds of tape-recorders on sale that I can't make up my mind which to buy.
有这么多的录音机,我都拿不定主意买哪一种。
注意:疑问词带不定式在句中作成分时,谓语动词用单数。
The question is how to put it into practice.
问题是怎样把它付诸实施。