l think he has a ping-pong ball.改为否定句是什么?

l think he has a ping-pong ball.改为否定句是什么? Tom has a ping-pong ball 改为否定句 Tom( )( ) a ping-pong ball He has a ping pong ball改为复数句 He has a ping-pong bat.(改为否定句） he has a ping-pong ball 改为一般疑问句 l have a ping-pong bat.【改为否定句】 l 【 】【 】 a ping-pong bat.They think has ping-pong l bat he a 连词成句 Jack has tow computers.（改为一般疑问句） He has a ping-pong ball.（改为 My sister has a ping-pong ball.改为一般疑问句并作否定回答 这几句英文的中文意思 I think he has a ping-pong ball I think he has a ping-pong ball,too的意思 Does she have a ping–pong ball?改为肯定句.He plays sports every d