Sentence pattern 【Japanese grammar】verb て form + もいいですか (moiidesuka) = May I (Can I) + verb: how to ask permission
On this page, you can learn Japanese grammar for seeking permission.
permission
Sentence pattern 
Sentence pattern 【Japanese grammar】verb て form + もいいです (moiidesu) = be allowed to + verb: How to express permission
Let's learn how to say those sentences in Japanese: I am allowed to go to Japan next month. My older brother is allowed to buy cigarette. I am allowed to listen to music in class. You are allowed to speak in English. You are allowed to enter a room.
Sentence pattern 【Japanese grammar】verb てform + はいけません (wa ikemasen) = not allowed to + verb: How to express prohibition
Let's learn how to say those sentences in Japanese: I am not allowed to talk to my mother. I am not allowed to drive a car. You are not allowed to drink beer. You are not allowed to swim in the river. Students are not allowed to eat in a classroom.