play tennis和play tennis ball的区别？

play tennis是打网球的意思，而play tennis ball则是打网球的球的意思，区别可以从以下例子看出：

Please don't just play tennis ball, you need to play tennis with someone, then you will improve your skills. 请不要只打网球，你需要和别人一起打网球，然后你会提高你的技能。