不定式完成式的用法

(1) 表示發生在謂語動作之前的動作：

He seems to have caught a cold. 他似乎感冒了。

I hate to have quarreled with her. 我后悔和她吵架了。

I believe it to have been a mistake. 我相信這是一個錯誤。

You appear to have travelled quite a lot. 你似乎作過多次旅行。

I’m sorry to have given you so much trouble. 對不起給了你這么多麻煩。

It’s said to have been built in the Ming dynasty. 據說它是明朝修建的。

(2) 表示在某個給定的時間之前已完成的動作：

I hope to have finished the work by now. 我希望現在以前已完成這項工作。

(3) 表示過去未曾實現的想法和愿望：

I should like to have come earlier. 我本想早點來的。

We were to have been married last year. 我們本來打算去年結婚的。