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〜まで / 〜までに

Until / by — temporal limits

Formation

まで: continuing action up to a point / までに: deadline or limit for an action

Usage

まで marks the end point of a continuous action. までに marks a deadline by which an action must be completed.

Example sentences

9時まで勉強します。

I study until 9 o'clock.

明日までに宿題を出してください。

Please submit the homework by tomorrow.

駅まで歩きましょう。

Let's walk to the station.

金曜日までに返事をください。

Please give me a reply by Friday.

結婚するまで、貯金します。

I'll save money until I get married.

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