休息一会如何”用英语怎么说

What about having a rest?
what/how about doing sth.=why don`t you / not do sth.
about是介词,后面要加V-ing 形式

what about have a rest?

What about take a rest?
What about rest?

What about having a rest ?
用What about +doing ?的形式．

What/How about having a rest?
Why not have a rest?
Why don't you have a rest?

How about a short break?

Let's take a break, shall we?