动名词是动词的一种非谓语形式。动名词有名词和动词的特征，可以带宾语和状语构成动名词短语。动名词由动词原型加词尾ing构成，和现在分词形式相同，动名词和动名词短语可以作主语 表语 宾语介词宾语 定语 状语 宾补。

状态	主动	被动
一般	doing/being + 表语 Our only worry is George’s overestimating himself.	being + done(vi.)
完成	having + done	having been + done(vi.)

动名词固定搭配

consider doing sth. 考虑做某事	I consider waiting a bit longer before I give up.
practice doing sth. 练习做某事	practice doing this type of breathing several times per day.
imagine doing sth. 想象做某事	I can't imagine marrying such a woman.
finish doing sth. 完成做某事	Let's finish doing the work together.
give up doing sth. 放弃做某事	My father has given up smoking.
enjoy doing sth. 喜欢做某事	I enjoy playing basketball.
keep doing sth. 一直做某事	I kept studying English for 1 hour yesterday evening.
put off doing sth. 推迟做某事	Sometimes students put off doing their homework until the last minute.
admit doing sth. 承认做某事	He admitted making the mistake.
suggest doing sth. 建议做某事	I suggest traveling abroad next month.
risk doing sth. 冒险做某事	To win the gamble,he risked losing 100 dollars.
advise doing sth. 建议做某事	He advises going to see a movie.
allow doing sth. 允许做某事	We don't allow smoking in the classroom.
avoid doing sth. 避免做某事	Try to avoid drinking and smoking.
appreciate doing sth. 感谢做某事	We shall appreciate hearing from you again.
delay doing sth. 拖延做某事	Why have you delayed writing to him.
deny doing sth. 否认做某事	John denied signing the contract.
escape doing sth. 逃脱做某事	He escaped being killed.(被杀)
dislike doing sth. 不喜欢做某事	He dislikes dancing in public.
discuss doing sth. 讨论做某事	I like to discuss doing sports with my friends.
excuse doing sth. 原谅做某事	He can't excuse coming late for work.
fancy doing sth. 想象/喜爱做某事	Are you fancy buying some food with me?
mind doing sth. 介意做某事	Would you mind opening window?
mention doing sth. 提及做某事	He mentioned watching TV.
forbid doing sth. 禁止做某事	They forbid parking here.
miss doing sth. 错过做某事	The thief missed being caught yesterday.(被抓)
prohibit doing sth. 禁止/阻止做某事	The new rules prohibit smoking.
permit doing sth. 允许做某事	We do not permit smoking in the office.