你能不说英语吗?英语怎么说

Could you do not speak English please？

No Englsih,please.这个语气比较强。
Could you please don't speak english? 这个更委婉。

you can't speak English,right?

Can you please don't speak English

委婉语气：Could you please don't speak English?

Would you mind not speaking English? 你介意不说英语吗?(很客气的语法)