Wakaranai tokoro ga attara, setsumei shite ageru yo.

If there is something you don't understand, I will explain it to you.

Kono gēmu no rūru o setsumei shite ageru ne.

I will explain the rules of this game to you.

Atarashii sumātohon no tsukaikata o setsumei shite ageru.

I will explain how to use the new smartphone to you.

Ashita no tesuto no han'i o setsumei shite ageru kara, yoku kiite ne.

I will explain the scope of tomorrow's test to you, so listen carefully.

Michi ga fukuzatsu dakara, chizu o tsukatte setsumei shite ageru yo.

Since the streets are complicated, I will explain it to you using a map.

Origami no orikata o setsumei shite ageyō ka?

Shall I explain how to fold origami to you?