I’m playing soccer on Saturday.这句话有语法错误吗?

I`m playing soccer on monday 对划线地方提问（playing soccer ） I saw him play/playing soccer at 4 o'clock yesterday应该用play 还是用 playing 为甚门额? I ( ) a soccer fan.I like playing soccer very much. I’m playing soccer on Saturday.这句话有语法错误吗? :i hurt myself playing soccer中playing做什么成份 I like playing soccer.（对playing soccer提问）＿ ＿you like I don't think he likes playing soccer.(同义句替换）---- ---- ----,he---- ----playing soccer. I don't think he likes playing soccer (同义句替换））---- ---- ----,he---- ----playing soccer i like playing soccer 和i like to play soccer 变疑问句 I saw him yesterday afternoonA playing soccerB play soccer I don't like playing soccer no more改病句 改错1 I like playing basketball,soccer,volleyball. i enjoy swimming but( ) my brother, he enjoys playing soccer i with my parents 填be动词playing soccer Lucy （invite）her friends to her party next Sunday填正确形式还有一个i'm playing soccer with my friends（对划线部分提问）划线：with my friends____ _____you playing soccer with? Playing soccer s( ) great. i like not only playing soccer but also playing basketball行吗i not only like playing .同上 请求老专家 I like playing soccer中的playing为什么不是play不准抄袭,要具体