Share our mistakes talking in English because we don't know cultural aspects of natives that make us seem so rude, idiot or the contrary "adulador" or "salamero" with the native person. Native Speakers can share the stereotypes you feel talking to foreigners. The objective of this post is to learn the best way to communicate and avoid misunderstandings or show something that an English learner didn't mean to say. One aspect I like from natives with whom I could share face to face is to be on time or if it is possible in time. I am from Colombia; in our culture, it could be ok in a meeting to be 5 or even 10 minutes late but Once I have an English class with a native speaker I was five minutes late and I couldn´t get into the classroom. Be on time I think is a way to show respect. I´m not sure but asking for permission, for example: May I go to the bathroom? It sounds like a plea. Could I go to the bathroom? It sounds well and polite. Can I go to the bathroom? It sounds rude. Thanks for your comment.