Rather than push the book back as he wanted to do, he forced himself to pick it up.
出现在句中其他位置时, 其后的不定式有时带to, 有时不带to.
He decided to write rather than telephone.
The manager believes it is important to invest in new machinery rather than to increase wages.
用作补语的动词不定式, 如果主语是由“all + 关系分句”，“thing +关系分句”，“what分句”或“thing +不定式结构”等构成，并带有do的某种形式，这时，作为主语补语的不定式可以省to，也可以不省.
What he will do is (to) spoil the whole thing.
All you do now is complete the form
The only thing I can do now is go on by myself.The thing to do now is clear up this mess.
The least I can do is drive everybody else closer to the issue.
以上就是大学英语四级语法辅导的全部内容，希望考生可以通过这篇文章熟练掌握不定时的相关用法。预祝大家都能顺利通过考试！
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