hanamaru
Ask for or give permission to do something
Asks for permission to do something, or grants it.
JLPTN5
verb (て-form) + もいいです~ te mo ii desu
it's okay to do [something]
Put a verb in its て-form and add もいいです to say that doing it is okay. As a question it asks for permission, and as a statement it gives permission. The opposite, saying something is not allowed, uses てはいけません.
Tips and Common Traps
Hana· Key point
〜てもいいですか is the polite way to ask permission in everyday life — at someone's home, in a classroom, at a shop.