请帮忙把下面的话翻译成英文.''你为什么不学好中文,如果会中文的话,我们会更好的沟通.

后半部分应该用虚拟语气，另外中文的学好，我个人认为应给是努力学的意思：
Why don't you learn Chinese hard, if you knew it, we could communicate witn each other much better.

Why don't you learn Chinese. If you knew Chinese, we would communicate much better.

Why don't you learn Chinese well. If you knew Chinese, we can communicate much easier.

Why didn't you try to learn Chinese well. We could have communicated better if you learned Chinese!

我试一下，翻译的不好不要怪我啊.

Why don't you learn Chinese well? If you can speak Chinese very well,we'll comunicate with each other much better.

Why don't you learn Chinese hard? If you understand Chinese,we will communicate much better.