1．动名词的特点
(1)动名词是从动词变化而来的，所以它保留了动词的某些特征。动名词不能单独作谓语，没有人称和数的变化，但可以有自己的宾语和状语，还有时态和语态的变化。
(2)动名词最大的特点是它相当于一个名词，因此，动名词可以在句中作主语、宾语、表语等。
2．动名词的时态和语态
|
语态
时态
|
主动
|
被动
|
|
肯定
|
否定
|
肯定
|
否定
|
|
一般式
|
doing
|
not doing
|
being done
|
not being done
|
|
完成式
|
having done
|
not having done
|
having been done
|
not having been done
|
?People hate being praised for nothing.
人们不喜欢无缘无故地被赞扬。
?The secretary was scolded for not having finished typing up the report in time.
那位秘书因没有及时将报告打印出来而受到了责备。
?We have no idea of their having done such kind of thing.
我们不知道他们做了这种事情。
?After having been treated in the special way，he could deal with everything around him smoothly.
接受了特殊的训练后，他能顺利地处理他周围的一切事情。
3．动名词作主语常表示一般性的、习惯性的动作，其被动形式为being done
?Breathing became difficult at that altitude.
在那个海拔高度，呼吸变得很困难。
