Guessing and hearsay

~でしょう

probably ~; I guess ~; isn't it?

AI-written, reviewed by AI (ChatGPT)

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How to form it

  • Verb / い-adjective (plain form) + でしょう
  • な-adjective (stem) + でしょう
  • Noun + でしょう
  • Question tone (rising): ~でしょう? seeks agreement

Register: Polite; plain form is だろう

Explanation

Expresses a guess, or seeks the listener's agreement.

With falling tone it is a guess. With rising tone it checks that the listener agrees. It can be used in weather forecasts.

Examples

  1. 明日は雨が降るでしょう。

    あしたはあめがふるでしょう。

    It will probably rain tomorrow.

  2. あの店は、きっと高いでしょう。

    あのみせは、きっとたかいでしょう。

    That shop is probably expensive.

  3. 田中さんは、もう帰ったでしょう。

    たなかさんは、もうかえったでしょう。

    Mr. Tanaka has probably gone home already.

  4. これ、おいしいでしょう?

    これ、おいしいでしょう?

    This is delicious, isn't it?

Compare with

Common mistakes

  • Using ~でしょう for facts the speaker knows for sure.
  • Using ~でしょう to a superior when rising tone could sound as if you are testing them.