·1. It's on me.·
sth is on sb表示sb is responsible for sth，在提到餐饮的语境里可以表示由某人买单，It's on me等于I'll pay，我请客，我买单，只用于非正式口语。
If you help me sort out these files, dinner's on me tonight.
如果你帮我整理这些文件，今晚我请你吃饭。
Could you come in for a chat? Coffee's on us.
你能进来聊聊吗？我们请你喝咖啡。
Don't worry about the bill, it's on me this time!
别担心饭钱，这次我请客！
·2. It's my treat.·
treat /triːt/ 在这里是名词，表示something special that you give someone or do for them because you know they will enjoy it，送给别人的特别的东西，招待，款待。
It's my treat是固定表达，to tell someone that you will pay for something such as a meal for them，意思和It's on me一样，我请客，经常省略说成My treat，也是用于口语。
Don't bring your wallet; it's my treat.
别带钱包，我请客。
Let's grab lunch after the meeting. My treat!
会后一起简单吃个午饭吧。我请客！grab /ɡræb/ 动词，可以表示to get some food or sleep quickly because you are busy，因为很忙，快速补个觉或者吃个饭。
We should go for a drink sometime. My treat.
改天我们该聚聚喝一杯，我请客。
·3. I'll buy you lunch/coffee.·
简单直接的说法，我请你吃饭/喝咖啡，非正式口语里用。
Thanks for the ride. I'll buy you coffee tomorrow.
谢谢你载我一程，明天我请你喝咖啡。
Let me buy you dinner. You really helped me out today.
我请你吃饭吧，你今天真是帮了我大忙。
You wanna bet? Loser buys lunch.
要不要打赌？输的人请吃饭噢。
·4. I'll take you (out) to dinner.·
take sb to dinner，带某人去吃晚饭，经常但不绝对是发出邀请的人付钱，要看语境。
加多一个out“我买单”的意味会更强，take sb out to...表示to go somewhere with someone and pay for them，约某人出来，通常也为他们买单，不局限于情侣约会，也可以是约朋友、客户等。
How can I thank you? Let me take you out to lunch tomorrow.
我要怎么感谢你呢？明天中午我请你吃饭吧。
I'm so sorry for what I did, and I really want to make it up to you. How about I take you out to dinner?
很抱歉我做了这些事，我真的想补偿你，我请你吃饭怎么样？
They came all this way just to see us. Let's take them to a nice restaurant.
他们大老远跑来看我们，我们带他们去一家好点的餐厅吃饭吧。
·5. I'll treat you to dinner.·
treat在这里是动词，表示to buy or do something special for someone，招待，款待，为某人做特别的事，给某人买东西，常用结构是treat sb to sth。
McDonald's? This is your idea of treating me to dinner at a nice restaurant?
麦当劳？你说的请我去个好餐厅吃饭就这啊？
After the meeting, we treated our clients to lunch.
会议结束后，我们请客户吃午饭。
·6. I'll invite you over for dinner.·
invite sb over这个表达特指请别人来自己家里。英式英语里也说invite sb around。
在家里请客吃饭当然不需要客人付钱，但如果把over或者around去掉，比如说invite sb for a drink at the pub，邀请某人去酒吧喝一杯，可以只是叫别人一起去，不请客，每个人自己付钱。
Are you free tonight? I'd like to invite you over for dinner.
你今晚有空吗？我想请你来家里吃晚饭。
We have to tidy up the house. We've invited some friends over for lunch tomorrow.
我们得收拾一下屋子。我们请了一些朋友明天过来吃午饭。
根据首字母补充单词，文本左滑查看答案：
If you help me sort out these files, dinner i___ o___ m___ tonight.
如果你帮我整理这些文件，今晚我请你吃饭。
We should go for a drink sometime. M___ t______.
改天我们该聚聚喝一杯，我请客。
Thanks for the ride. I'll b____ you coffee tomorrow.
谢谢你载我一程，明天我请你喝咖啡。
How can I thank you? Let me t_____ you o____ t___ lunch tomorrow.
我要怎么感谢你呢？明天中午我请你吃饭吧。
After the meeting, we t______ our clients t___ lunch.
会议结束后，我们请客户吃午饭。
Are you free tonight? I'd like to i______ you o____ for dinner.
你今晚有空吗？我想请你来家里吃晚饭。
If you help me sort out these files, dinner is on me tonight.
如果你帮我整理这些文件，今晚我请你吃饭。
We should go for a drink sometime. My treat.
改天我们该聚聚喝一杯，我请客。
Thanks for the ride. I'll buy you coffee tomorrow.
谢谢你载我一程，明天我请你喝咖啡。
How can I thank you? Let me take you out to lunch tomorrow.
我要怎么感谢你呢？明天中午我请你吃饭吧。
After the meeting, we treated our clients to lunch.
会议结束后，我们请客户吃午饭。
Are you free tonight? I'd like to invite you over for dinner.
你今晚有空吗？我想请你来家里吃晚饭。
往期推荐：
“不然呢”用英语怎么说？
“绕路”用英语怎么说？
“你还好意思说我”用英语怎么说？
推文说明：
这系列推文主要分享那些中文里常说、换成英语就不太会讲的话。每天早晨8点更新。
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