Title says it all. I am looking for sentence structures that can convey this meaning.

  • 4
    "You can do this" in the sense of giving permission?
    – chocolate
    Sep 18, 2016 at 14:46
  • @chocolate Yes I meant by giving permission Sep 19, 2016 at 0:33
  • 1
    How is this not a duplicate of another question?
    – istrasci
    Sep 22, 2016 at 19:11

2 Answers 2


To say "you can/may ____" or "it's okay to ____", use this structure:

[verb, te-form] + も (optional) + いい

This can also be used with negatives to say "it's okay not to ____"

Positive Example: 「入っていいですよ」 (inviting someone to come into your house/room)

Positive Example (casual): 「入っていいよ」

Negative Example: 「心配しなくていいですよ」 "It's okay"/"Don't worry (about it)"; literally "it's okay not to worry"

Negative Example (casual): 「心配しなくていいよ」


  • も, like a lot of other particles, is usually ommitted when spoken or in chat and included in formal, written communication like e-mail, letters, papers, books, etc.
  • The sentence ending ~よ is often tagged on the end of sentences that use this structure.

It differs depending on the connotation you want to attach to 'able to'

  1. Ability : できる or the 可能形 (ability form of verbs)
    For example, 自分で料理できますか?means are you able to do the cooking yourself? ピアノが弾けます (possibility form of 弾く) means I am able to play the piano.

  2. Permission : でもいい? or 〜っていいよ
    ちょっとトイレに行ってもいい? Means can I go to the toilet for a bit? This indicates not the ability to go to the toilet but rather the permission to go to the toilet.

  3. Possibility : 可能
    Literally the word means possibility, and this refers more to things which are physically possible, or possible within a set of rules. Also is a more formal form of no.1.
    For example, 一年で日本語を学ぶことは可能ですか? means is it possible to learn Japanese in a year.

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