1、动名词用作主语，例如Fighting broke out between the south and the north，南方与北方开战了
3、有些结构后面可以用动名词作宾语或其他成分，如be used to , lead to , stick to , no good, no use, be fond of , look forward to , be busy, can't help, be tired of 等等
5、作定语，一般表示所修饰名词事物的用途，例如 a writing desk= a desk for writing写字台，a swimming pool= a pool swimming游泳池
