什么时候要用playing
更新时间：
1、playing是非谓语动词形式。-ing形式在句中可以当主语、宾语或其它句子成份。
2、Playing football is one of my favorite outside class activities.
3、I like /enjoy playing football.
1、playing是非谓语动词形式。-ing形式在句中可以当主语、宾语或其它句子成份。
2、Playing football is one of my favorite outside class activities.
3、I like /enjoy playing football.