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不定式完成式用法歸納

不定式完成式的基本形式為to have done，其主要用法如下：

1. 表示比謂語(yǔ)更早的動(dòng)作，即不定式所表示的動(dòng)作發(fā)生謂語(yǔ)動(dòng)作之前。如：

I remember to have seen him do it. 我記得曾看見(jiàn)他這樣做。

He is said to have written another TV play. 據(jù)說(shuō)他又寫(xiě)了一部電視劇。

I am ashamed to have mentioned it.我很慚愧提到了這件事。

2. 表示比某特定時(shí)間更早的動(dòng)作，即表示在某個(gè)特定的時(shí)間之前已完成的動(dòng)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. 我們希望下周六前完成這項(xiàng)工作。

3. 表示假想的更早的動(dòng)作，尤其是表示過(guò)去本來(lái)打算要做某事，但實(shí)際上沒(méi)有做成的動(dòng)作。如：

They were to have left the next day. 他們本來(lái)決定第二天就離開(kāi)的。

I should like to have been told the result earlier. 我本想讓人把結(jié)果早點(diǎn)告訴我。