といい

I Hope

Level 2Sounds Like toii

Use といい to say 'I hope...' or 'It would be good if...' regarding future events, weather, or other people's success.

How It Works

This pattern is a standard way to express wishes in Japanese. Because it uses the と conditional, it carries a nuance of objectivity—stating that a certain outcome would be naturally beneficial.

1. Sentence Endings:
The ending changes based on the context:

  • 〜といいですね: Used when wishing for the benefit of others, including the listener or a third party (Polite).
  • 〜といいな(あ): Used for personal wishes or talking to yourself (Casual).
  • 〜といいんですが / 〜といいなと思っています: Used when expressing a personal wish in a polite context.
  • 〜といいですよ: Used to give gentle advice or suggestions to the listener.
  • 〜といいんだけど / 〜といいんですが: Adds a layer of uncertainty or worry ('I hope... but I'm not sure').

2. Formation:
It attaches to the plain form (dictionary form) of verbs and adjectives:

  • Verbs: 晴れる（はれる）+ といい → 晴れるといい (I hope it clears up)
  • Negative Verbs: 降らない（ふらない）+ といい → 降らないといい (I hope it doesn't rain)
  • い-Adjectives: 楽しい（たのしい）+ といい → 楽しいといい (I hope it's fun)
  • な-Adjectives: 元気（げんき）+ だ + といい → 元気だといい (I hope they are well)
  • Nouns: 日曜日（にちようび）+ だ + といい → 日曜日だといい (I hope it's Sunday)

3. Usage Notes:

  • Objectivity: Compared to 〜たらいい, which is very personal and emotional, といい sounds more detached or objective. It frames the wish as a natural consequence rather than just a strong feeling.
  • Self-Wishes: When expressing a wish for your own controllable actions, you should use the potential form (e.g., 行ける（いける）といい instead of 行く（いく）といい).

Examples (5)

  1. 明日、晴れるといいですね。

    I hope it's sunny tomorrow.

    Word by Word: Tomorrow, if it clears up, it is good, isn't it?

    A classic use of the pattern for weather, which is outside the speaker's control.

  2. 試験に合格できるといいな。

    I hope I can pass the exam.

    Word by Word: Exam (in) can pass if do, it is good (particle).

    When wishing for your own actions, the potential form できる is used to make it sound natural.

  3. 雨が降らないといいですね。

    I hope it doesn't rain.

    Word by Word: Rain (subject) does not fall if, it is good, isn't it?

    The negative plain form ない can also be used to express a hope that something does not happen.

  4. 分からない時は、先生に聞くといいですよ。

    When you don't understand, you should ask the teacher.

    Word by Word: Don't understand time, teacher to ask if, it is good (polite particle).

    Using といいですよ is a soft way to give advice or suggestions to someone else.

  5. プレゼント、気に入ってくれるといいんだけど。

    I hope they like the present (but I'm a bit worried).

    Word by Word: Present, like (for me) if do, it is good, but...

    The んだけど ending adds a nuance of uncertainty or slight anxiety about the outcome.

Common Mistakes

  • Using といい followed by a command or request.

    合格するといいから、頑張ってください。
    合格するように、頑張ってください。

    The と conditional cannot be followed by a command, request, or expression of will in the same sentence. Use 〜ように instead for 'Do your best so that you pass.'

  • Confusing 'I hope not' with 'You don't have to'.

    雨が降らなくてもいいですね。
    雨が降らないといいですね。

    〜なくてもいい means 'you don't have to' or 'it's okay if it doesn't.' To say 'I hope it doesn't rain,' you must use the negative plain form + といい.

How It Connects

Tap a pattern to see what it builds on and what it leads to.

といいLevel 2I Hope

Learn This First

To understand 'といい' (I hope), you need to know how the conditional particle 'と' works to link a condition to a result. Additionally, you must be familiar with the adjective 'いい' (good) and how to use verbs in their plain/dictionary form, as the pattern literally translates to 'it would be good if [verb] happens'.

Words in This Pattern