Hi, it would be more correct to say the following if it happens all the time: "My dance teacher always becomes very angry and shouts at us when we do anything wrong" If it only happened once you could say, " My dance teacher became very angry and shouted at us when we did the wrong thing."

Your sentence is correct if you are telling a story about what used to happen in the past. It tends to indicate that you are no longer working with that dance teacher, or that the dance teacher no longer gets angry and shouts. But if you are talking about something that is still happening in the present, then Jura's phrasing would be better.

In my experience it would be more usual (habituel) to say, "My dance teacher always got very angry ....", or, "My dance teacher always used to get very angry ...."

Bonjour Lisa, j'espère que ce n'est pas vrai... car je suis sûre que vous faites toutes de votre mieux...