Japanese phrase
___に入ってもいいですか？ ___ ni hai tte mo i i de su ka
Meaning
May I enter ___?
When to use it
Asks permission to enter a place. It is polite and common in everyday situations, including when speaking to staff, teachers, or unfamiliar people.
Example dialogue
すみません、教室に入ってもいいですか？ su mi ma se n kyō shitsu ni hai tte mo i i de su ka
Excuse me, may I enter the classroom?
はい、どうぞ。 ha i dō zo
Yes, go ahead.