Be polite! (advice) -
You should be more politeI want a cup of coffee (request) - Could I have a cup of coffee?
Don't work late (advice) - You shouldn't work late
Follow me now (request) - Could you follow me now, please?
Do you want a cup of tea? (wish) - Would you like a cup of tea?Don't be rude (advice) - You shouldn't be rude
Stop! That's enough (wish)- Would you stop, please? It's enough