有些动词可以用不定式作宾语，大致上有三种情况。
1） 有些及物动词用不定式作宾语，结构为动词+不定式。例如：
afford aim agree arrange ask decide bother care choose demand desire determine elect endeavor hope fail help learn long 渴望 mean manage offer plan pretend refuse tend undertake expect hate intend例如：
The driver failed to see the other car in time. 司机没能及时看见另一辆车。
He offered to help me. 他表示愿意帮助我。
2）有些动词除了可以用不定式作宾语，还用不定式作补语，即有动词+宾语+不定式的结构。例如：
ask choose expect help beg intend like/love need prefer prepare want wish 例如：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） 有些动词或动词词组可以用动词+疑问词+不定式的结构作宾语。例如：
decide know consider forget learn remember show, wonder find out tell inquire explain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 cant 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。