(2)进行式：不定式的进行式所表示的动作与谓语动词动作同时发生，例如：

The boy pretended to be working hard.

He seems to be reading in his room.

(3)完成式：不定式的完成式表示的动作发生在谓语动词动作之前，例如：

I regretted to have told a lie.

I happened to have seen the film.

He is pleased to have met his friend.

2.不定式的句法功能：

(1)作主语：

To finish the work in ten minutes is very hard.

To lose your heart means failure.

动词不定式短语作主语时，常用it作形式主语，真正的主语不定式置于句后，例如上面两句可用如下形式：

It is very hard to finish the work in ten minutes.

希望大家能够认真阅读这篇初中英语语法非谓语动词与谓语动词的区别，以便在英语学习上取得优异的成绩。

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