内容正文:
动名词(2019/5/13)
动名词是由“动词原形+ing”构成,它既有动词的特征, 可以被状语修饰,也可以带宾语,又有名词的特征,在句子中的用法及功能与名词的作用相同,不能做谓语,可以作主语、宾语、表语、定语。动名词也有时态和语态的变化。
一.动名词的时态和语态
1.一般式
(not)doing (主动)
(not)being done(被动)
表示一般性的动作或者是与谓语动词同时发生的动作
Playing with fire is dangerous. 玩火危险。
She didn't mind being left alone at home .
她不介意被一人留在家里。
Being exposed to sunlight for too much time will do harm to one’s skin. 长时间在太阳下暴晒会伤皮肤。
2.完成式
(not)having done (主动)
(not)having been done(被动)
表示动作发生在谓语动词之前
I regret having said some rude words to my brother.我后悔对我弟弟说了些粗话。
Tony was very unhappy for not having been invited to the party. 汤姆因没被邀请参加聚会不高兴。
二.动名词的基本用法
1.做主语
动名词作主语表示泛指“经常的、习惯的”动作。常用形式主语it来代替动名词短语,即:
It is/ was +adj./ n. +doing sth(常见的形容词或名词有:no good/ use, not any good/ use, of no/ little good/ use, useless等)。
Taking exercise every morning helps make one healthy. 每天早晨做运动有助于人的健康。
It is no use waiting for him any longer.
等他是没有用的。
It’s of no good staying up too late every day. 每天熬夜没有好处。
2.做宾语
(1)介词之后只接动名词
(2)下列动词或短语只接动名词:
①动词(按下列顺口溜