有一类动词，如deny, admit, apologize, confess, excuse, forget, forgive, recall, regret, remember, thank等动词后接动名词时，其本身的动作总是在动名词的动作之后发生，所以，其后的动名词一般形式和其后的动名词的完成形式都可以表示其动作发生在谓语动词所表示的动作之前。
Upon being questioned he denied writing the article.
Upon being questioned he denied having written the article.
一经询问，他否认写了这篇文章。
She admitted driving the car without insurance.
She admitted having driven the car without insurance.
她供认驾驶了这辆没有保险的轿车。
I admit seeing it.
I admit having seen it.
我承认看到过它。
I apologize for being late
I apologize for having been late
我为自己的迟到致歉。
I must confess to knowing nothing about computers.
I must confess to having known nothing about computers.
我得承认对电脑一窍不通。
He confessed to being a bundle of nerves.
He confessed to having been a bundle of nerves.
他承认自己一直神经极度紧张。
Her husband confessed to having an affair
Her husband confessed to having had an affair
她丈夫承认有过外遇。
His excuse for forgetting her birthday was that he had lost his diary.
His excuse for having forgotten her birthday was that he had lost his diary.
他辩解说因为日记本丢了才忘了她的生日。
I'll never forget hearing this piece of music for the first time.
I'll never forget having heard this piece of music for the first time.
我永远不会忘记第一次听到这首曲子的情景。
Looking at the crowds out shopping, you could be forgiven for thinking that everyone has plenty of money.
Looking at the crowds out shopping, you could be forgiven for having thought that everyone has plenty of money.
见到人们成群结队地外出购物，难怪你会以为人人都很富有。
Looking at the figures, you could be forgiven for thinking the recession is already over.
Looking at the figures, you could be forgiven for having thought the recession is already over.
看看这些数字，难怪你会觉得经济衰退已经结束了。
Forgive him for being late.
Forgive him for having been late.
请原谅他的迟到吧。
I can't recall meeting her before.
I can't recall having met her before.
我想不起来以前曾经见过她。
He bitterly regretted ever mentioning it.
He bitterly regretted ever having mentioned it.
他非常懊悔提起那件事。
I remember reading the newspaper aloud to my father at five.
I remember having read the newspaper aloud to my father at five.
我记得在5岁的时候大声给父亲读报纸。
I do thank you for doing the job for us.
I do thank you for having done the job for us.
真感谢你为我们做了这件事。
关于这个考点学习融会贯通了本文，你可以一路考到博士都没有问题了。