GrammarN42 min read2026-02-17

疑問詞 動詞仮定形 いいですか

Ask for advice or suggestions using question words + conditional verb form + いいですか

Meaning

This pattern is used when asking for advice, guidance, or seeking someone's opinion on the best course of action. The question word (何, どこ, どんな, etc.) combined with the conditional form of a verb followed by いいですか expresses uncertainty about the right choice. It's equivalent to the ~たらいいですか pattern and is commonly used in casual conversation as ~ばいいの?

Formation

Part of speechFormation
疑問詞 + 動詞仮定形疑問詞 + 動詞仮定形 + いいですか

Examples

  1. この書類に 何を 書けばいいですか。
    What should I write on this document?

  2. コンサートの チケットを 買いたいんですが、どこで 買えばいいですか。
    I want to buy concert tickets—where should I buy them?

  3. 明日 パーティーに 参加するんだけど、どんな服を 着ればいいの?
    I'm going to a party tomorrow—what kind of clothes should I wear?

Summary

  • Used to ask for advice or recommendations on what/where/how to do something
  • Consists of question word + conditional verb form + いいですか
  • Interchangeable with ~たらいいですか; casual form is ~ばいいの?

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