to explain to you
Let me explain everything to you.
Pourquoi dois-je t'expliquer les choses ?
Why do I have to explain things to you?
I don't have to explain myself to you.
Je dois t'expliquer quelque chose.
I have to explain something to you.
Tu n'as pas besoin de t'expliquer.
You don't need to explain yourself.
Je vais essayer de t'expliquer.
I will try to explain to you.