I have a lot of experience on math teaching这句话有没有语法上的错误?

I have a lot of experience on math teaching这句话语法上有没有错误? I have a lot of experience on math teaching这句话有没有语法上的错误? i put a lot of sugar on my coffee 这句话没有错误吧? "If it had rained , I would have gone out ."这句话有没有语法上的错误?作文里 I saw him that was flying a kite just now这句话有没有语法上的错误? 这句话语法上有没有错误? I have run out of food ,I must go to buy some.这句话语法上有错误吗? Bill has a lot of teaching experience ,has't he? i can only eat in the restaurant.这句话有没有语法上的错误 I like to play game very much这句话有没有语法上的错误? I hate you!（这句话有没有存在语法上的错误?） 问一下这句话有没有语法上的错误