Does he have fun playing with his friend?中playing 为什么要用动名词,

Does he have fun playing with his friend?中playing 为什么要用动名词, he is playing cards with his friend改否定句 He is playing chess with his friend.对playing chess提问 Does he like后为什么用playing Exercise such as playing sports is fun中为什么要用playing而不是play? he often goes there playing with some of his friends.为什么用pla It's great fun playing with him. play为什么要用ing形式 一、He practised playing volleyball with his friend.（划线提问）(pla His hobby is playing computer games with friends.with friend “He hurt his back playing basketball”中“playing basketball&qu Tom likes playing chess with his friend.(对playing chess 提问) Do you like playing with us now 中为什么用playing比to play合适?