vt. sep.1.(for a second visit)to ask sb back再次邀请某人
She must have liked me because she asked me back.她一定喜欢我, 因为她又请我了。
2.(on a reciprocal visit)to ask sb back回请某人
It's very unlikely that they'll ask us back.他们回请我们的可能性非常小。
3.(after another event)to ask sb back邀请一起外出的人回到家里来
She asked me back to her house.她邀请我回她家。
to ask sb back for coffee邀请某人回家喝咖啡
He asked me back for coffee and promised to be a gentleman.他邀请我回家喝咖啡, 并且承诺会像个绅士一样规规矩矩的。