Dinner is on me.

晚饭我请客。

It's my treat today.

今天我请客。

It's my turn to treat us today.

今天,该轮到我请客了。

Let me spring for dinner.

我来请客吃饭吧。

I'll stand treat today.

今天我请客。

Let me buy the next round.

下次我请客。

Give a party by all means.

自然要请客喽！

What will you have ? It' s my shout.

你要喝什么? 该我请客了。

Let's go together. I will pay the hill today.

我们一起去，今天我请客。

Let's all go out to eat. I'm buying.

我们都到外面餐厅去吃饭，我请客。