Mike has a baseball bat.改否定句是do not 还是does not ,怎么区分呢

Mike has a baseball bat.改否定句是do not 还是does not ,怎么区分呢 Mike has a baseball bat ,改否定句 her baseball does sister have not a bat怎么连词造句 He has a baseball bat 变否定句 He has a baseball bat改为一般疑问句怎么改? They () have a tennis bat A are not B does not C is not D do I have a baseball bat改为否定句 按要求改变下列句子1.i have a baseball bat(改为否定句）2.my grandfather has The boy has a pen.(改为否定句） 为什么是does not have,而不是hasn't? Do you have a baseball bat 是何意 She has a baseball改为否定句 It is a baseball bat.改复数