可惜你不会中文，要不我们一定会交流得更好，用英语怎么说

It is pity that you cannot speak Chinese,otherwise we can communicate even better,because I cannot fully express myself in English .

What a shame that you do not speak chinese.Otherwise we can understand each other better!Coz I cannot speak perfect english.

what a pity that you cannot speak in chinese, or we must communicate better.

that's a pity that you don't read chinese,if not,we'll chat well..
这样不错 是个很口语化的句子。。。

Unfortunately, you can not speak Chinese, or we will exchange better

It's too bad you don't know Chinese,otherwise we can cummunicate better.