我现在还不能用英语跟你聊天。用英语怎么说？

I can't chat with you in English right now.

I'm afraid that I'm not able to chat with you in English

或者，最强硬的！！！
NO ENGLISH
（后果自负）。。。。。。。。。。

I am not able to chat with you in English so far.

I can't talk with you in English at present.
这种平常的交谈用语，不需要太复杂

i am not able to communicate with you in english

I can't chat with you in English at present.