1、作主语;eg. Swimming is a good sport in summer.
2、作动词的宾语; eg.They went on walking and never stopped talking.
3、介词+动名词;eg.The rain prevented us from finishing the project.
4、作形容词的宾语;eg. We are busy preparing for the coming test.
5、作表语:动名词作表语时句子主语常是无生命的事物的名词或what引导的名词性从句。表语动名词与主语通常是对等的关系,表示主语的内容,主语、表语可互换位置。如果句中的主语和表语同为动词时,要注意保持两个动词在形式上的一致。eg. Your task is cleaning the windows.
— Great. I'm looking forward to __________ her.
—Yeah, she works hard and practices_________ it both in and out of class.
Mr Smith's dogs and cats like the bed.
rubbish everywhere me very angry.
I a prize for an English speech contest in junior high school.