【Causative verbs】
I really want to know each real situation to use "make" "have" "get" "let" as casative verbs.
For example, have means ask and is used in relationship between a boss and a team member. Because both understand reporting line.

Vedi una traduzione

"Make" means that you will force somebody to do something. It usually implies that they don't want to do it, but they do not have a choice.

"Have" and "get" are basically the same ("have" sounds a bit more formal and "get" sounds a bit more informal). They mean that you are deciding that they will do it (without asking them first), but you are confident that they will do what you tell them to because of your relationship (you are their boss, or you're good friends, or they owe you a favor, etc). They technically can refuse, but you don't expect that they will.

"Ask" means you will make a request to them that they will do it, but they have the choice of accepting or refusing your request.

"Let" means that you will allow them to do it if they want to, but you are not requesting or trying to make them do it in any way. You just won't stop them if that's what they decide (on their own) to do.

I hope this helps...