Formal and Informal language

Formal is times when rules need to be followed and informal is when rules don't need to be followed.

Formal language is: hello, greeting, how are you, want to, do not. Informal language is: sup, G, wanna, don't, let's go. 

Formal situations is: meetings, announcements, assembly, funeral. Informal situations are: park, at home, at a field, playing a game.

L.I To identify formal and informal language.