Your daughter says something about farting while your family was eating dinner together. This is rude, so you warn her that she shouldn't say that.
We do not talk about bodily functions at the dinner table!
You're talking to a guy at a party. He speaks with a normal American English accent, so you think that he grew up in the U.S. But you're curious what country his parents or other ancestors came from. You ask:
Do you mind if I ask what your ethnic background is?
background, ethnicity, foreign country, polite, questions, race, rude, strangers, 日本語サポート 
Your boyfriend was being rude to you and seemed angry, but you don't know why. You asked him a question but he didn't answer or give any response. Now you're angry and you want to make him answer your question. You say:
Excuse me!?
A coworker just told you that he was too busy to talk to you. You're annoyed, so you complain to a work friend:
He just blew me off.
busy, coworker, coworker (topic), gossip, ignore, office, rude, simple past, work, 日本語サポート You went to a grocery store where the cashiers are often rude to you. You can't believe that they're so rude. You're complaining to a friend about the store employees. You say:
They don't even make eye contact with you!
Use "They don't ___" for things that people often don't do, or things that they never do. The word "even" shows that you think something is basic. In the example the speaker thinks that making eye contact is a basic level of politeness that all store employees should follow. She can't believe that the employees act this way.
"Making eye contact" with someone means looking at their eyes while they look back at you. When two people look at each other's eyes for a long time, you say that they're "staring at" each other. But when they look at each other for just a moment, it's called "making eye contact". In the United States, it's polite for people to smile and make eye contact with people who they deal with. You should make eye contact with a customer, someone you've just met, someone you see on the street who you recognize from your work, and so on.
The word "you" is used in English to talk about people in general. In the example above, the word "you" doesn't just mean the person who the speaker is talking to. It means all the customers at that store. Here's another example:
cashier, customer, politeness (topic), rude You're drinking with coworkers after work. You're gossiping about the director of your department. You feel like he doesn't notice you at all, and you give an example of this. You say:
Sometimes I'll run into him on the street, and he doesn't even acknowledge that I'm there.
complaining, phrasal verb, rude, sometimes, will You're working on a group project for school. You're trying to work, but one of the group members (who you know well) is just making jokes and chatting instead of working. You say to him:
Can you just stop it please?
