不定式完成式用法归纳

不定式完成式用法归纳

不定式完成式的基本形式为to have done，其主要用法如下：

1. 表示比谓语更早的动作，即不定式所表示的动作发生谓语动作之前。如：

I remember to have seen him do it. 我记得曾看见他这样做。

He is said to have written another TV play. 据说他又写了一部电视剧。

I am ashamed to have mentioned it.我很惭愧提到了这件事。

2. 表示比某特定时间更早的动作，即表示在某个特定的时间之前已完成的动作。如：

I expect to have finished by tomorrow evening. 我看明天晚上之前可以完成。

We hope to have finished the job by next Saturday. 我们希望下周六前完成这项工作。

3. 表示假想的更早的动作，尤其是表示过去本来打算要做某事，但实际上没有做成的动作。如：

They were to have left the next day. 他们本来决定第二天就离开的。

I should like to have been told the result earlier. 我本想让人把结果早点告诉我。