But I 什么 have a tennis racket.

But I 什么 have a tennis racket.
But I 什么 have a tennis racket.

But I 什么 have a tennis racket.
But I 【don't 】have a tennis racket.

But I don't have a tennis racket.

楼主好，

But I do have a tennis racket.
do这里起强调作用。

但是我是真的有网球拍！

希望对你有帮助^^