那些正在打网球的男孩是我的朋友的翻译：The boy who was playing tennis is my friend 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Boys who are playing tennis is my friend

The boy who was playing tennis is my friend

These are playing tennis the boy is the friend of mine

The boys who are playing tennis is my friend

The boy who was playing tennis is my friend