动名词一、动名词，即动词后加ing 的形式，即doing sth. 它的作用相当于一个名词，所以叫做“动名词”。二、用法1、 作主语时， 谓语动词用单数（is/ helps.） 例如： Eating vegetables is good for health.2、作宾语用动名词作宾语的动词 ：enjoy, finish, mind, practise, keep (on), imagine, admit, consider, deny , give up, avoid, delay, suggest，appreciate, enjoy, cant help 动名词（短语）还常常跟在短语动词之后。give up doing、feel like doing 、be worth doing、be busy doing、preventfrom doinghave difficulty (in) doing sth.介词后面如果出现动词的话，肯定是用动名词 介词+doing In, on, at, of, for, from,
