用英语怎么说“我请客”，还有“接，送某人”，口语化点的

我请客，
买单的时候说，It's on me.
邀请的时候可以说 May I pay your... 请吃什么东西。

接
pick sb. up
送
see sb. off

我请客是Let me treat you.

送某人see sb.off

接某人pick sb. up

It's my treat./ It's on me.

send sb./ diliver sb./ pick-up sb.

I treat you.

see sb.off

It's my treat .
see sb. meet sb.