Is that his computer game/games?为什么不用games?

Is that his computer game/games?为什么不用games? Is than his A、 computer games B、computer game C、a computer g 比如说:let's play computer games,game后为什么+s? Play computer games还是Play computer game? computer games和computer game的区别. computer game 和 computer games 的区别 hobby computer piaying his is games 连词成句 His hobby is playing computer games with friends.with friend playing computer games is fun同义句转换 这样的形式:（ ）（ ）computer game 为什么 We like computer games 要加"s",而 Let's play computer game playing computer games is very interesting 为什么用is Lilei is playing computer games.(画线部分 playing computer games