I think English is good,you don't know who is what

网友回答

我想英文很好,你不知道谁是什么意思.
但这句英文的语法是错的.
I think you do not know whose English is good.
I think his English is good,but you don't know who is he.
I think English is useful,and you don't know what's the meaning of 'WHO'?
======以下答案可供参考======
供参考答案1:
这是句子吗。。。。。
供参考答案2:
晕死，完全没逻辑的，都看不懂你意思，怎么改？？
供参考答案3:
？？？？这是什么烂句子 ？？？？！！！！