It is very inappropriate and it could also be offensive.
Well if it is bad words they can be inappropriate and offensive. Or for other words I don't know make another specific question.
yes he uses bad language
You're not permitted to. Try to use G rated language and drink water and good body language.
no way
Most teachers find formal language more comfortable to use, plus it is respectful
its bad to use bad lanuge because u can be banned
Bad transliteration, or an illiterate translation.
its bad to use bad lanuge because u can be banned
Yes he does.
Bad
People may use bad language to emphasize their emotions or to express frustration, anger, or excitement. It can also be used for shock value or to fit in with a certain social group. However, it is important to consider the impact of using bad language, as it can offend others and affect how people perceive you.
No. Animals certainly communicate with each other, but they do not use language.