〜てもいいですか te mo ii desu ka
〜てもいいですか（te mo ii desu ka）means “May I ...? ; Is it OK if ...?”. Attaches to the te-form of a verb to ask for permission: 'May I do X. Formation: V-て + もいいですか（简体 ＝ 〜てもいい？）
May I ...? ; Is it OK if ...?
N5Formation
V-て + もいいですか（简体 ＝ 〜てもいい？）
Explanation
Attaches to the te-form of a verb to ask for permission: 'May I do X?' A typical reply granting permission is はい、いいですよ; to refuse, いいえ、〜てはいけません or ちょっと…. Dropping the question particle (〜てもいい) makes it a statement: 'It's OK to do X.'
Examples
Note
In casual speech this becomes 〜てもいい？ (rising tone). 〜てもかまいませんか is a slightly more formal variant.
FAQ
〜てもいいですか — what does it mean and how is it used?
May I ...? ; Is it OK if ...?. Attaches to the te-form of a verb to ask for permission: 'May I do X?' A typical reply granting permission is はい、いいですよ; to refuse, いいえ、〜てはいけません or ちょっと…. Dropping the question particle (〜てもいい) makes it a statement: 'It's OK to do X.'
〜てもいいですか — how do you form it?
V-て + もいいですか（简体 ＝ 〜てもいい？）
〜てもいいですか — any usage notes?
In casual speech this becomes 〜てもいい？ (rising tone). 〜てもかまいませんか is a slightly more formal variant.