非谓语动词是什么意思

非谓语动词顾名思义就是不是动词但又跟动词有关联。简单说来有三种:to do, doing, done.

1. to do表示主动意义，指将来，偶尔一次性发生的事;可以作除了谓语以外的任何成分。它的变形有:to be done; to be doing; to have done; to have been done.

2. doing 表示主动意义，指现在，正在发生或持续发生的动作;可以作除了谓语以外的所有成分。可变形为:being done; having done; having been done

3. done 表示被动完成。只能作表语，状语，定语，补语。无变形。可以与having been done 互换。 举例:to see is to believe. seeing from the hill, we can enjoy a wonderful view. seen from the hill, the city looks wonderful.