(1)时态
①一般式：动名词的一般式所表示的动作可以是泛指，也可与谓语动词同时发生，或发生在谓语动作之前或之后，如：
We are interested in collecting stamps.
I shall never forget seeing the Great Wall for the first time.
We are not afraid of dying.
②完成式所表示的动作发生在谓语动词之前，如：
Imagine having travelled on the moon.
We were praised for having finished the work ahead of time.
(2)被动语态
①如果动名词的逻辑主语为动名词所表示的动作的承受者，动名词要用被动语态，动名词的被动语态有一般式与完成式之分，如：
The young man came in without being noticed.
He prided himself on having never been beaten in class.
②有些动词后的动名词用主动形式，但表示被动意义，如：
The bike needs repairing.
If a thing is worth doing,it is worth doing well.
⒋在口语中，为避免重复，常用“to”代替不定式结构，有时甚至可以把to省略，如：
①-Did you go to visit the Great Wall
-No,I wanted to,but there wasn't enough time.
②-Would you like to come to a party
-I'd love to.
③-Don't make any mistakes in your homework,will you
-I'll try not to.
④-Try to be back by 12,won't you
-OK,I'll try.
另外，be going to,ought to,used to等也常用于这一结构中。
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