〜ておく

To do in advance; to prepare for the future

1. Overview

「〜ておく」 is a Japanese grammatical structure used to indicate that an action will be completed before a certain point in time to prepare for a future situation. This structure often implies taking preemptive measures to avoid potential issues or ensure a certain state exists.

2. Structure

• Grammatical Structure:

  • Verb (て-form) + おく

• Explanation: This structure emphasizes completing an action in advance to ensure that something can proceed smoothly in the future.

3. Usage Explanation

• Connection: Commonly used in both spoken and written language to indicate actions taken in advance for future needs.

• Meaning: Generally translated as "to do in advance" or "to prepare for the future."

4. Example Sentences

1. 宿題をしておく。
   I will do my homework in advance.

2. 会議の資料を準備しておく。
   I will prepare the meeting materials in advance.

3. 出発する前に、財布の中身を確認しておいた方がいい。
   It’s better to check the contents of your wallet before leaving.

4. 旅行に行く前に、荷物をまとめておく。
   I will pack my bags in advance before going on the trip.

5. 映画を見る前に、チケットを予約しておいた。
   I reserved the tickets in advance before watching the movie.

5. Alternative Grammar

• 〜ておくつもり: Used to indicate an intention to do something in advance.
  • Example: 明日までに終わらせておくつもりです。
    I plan to finish it by tomorrow.

6. Related Grammar

• 〜ておく必要がある: Indicates the necessity to do something in advance.
  • Example: 準備をしておく必要があります。
    It is necessary to prepare in advance.

7. Notes

• Context: 「〜ておく」 is used to describe actions completed in advance for future needs and is suitable for various contexts.

• Tone: This expression typically conveys a sense of planning or intention, emphasizing the importance of taking action beforehand.

8. Summary

「〜ておく」 is used to indicate that an action will be completed in advance to prepare for a future situation, ensuring that things proceed smoothly. It emphasizes proactive measures and is widely used in daily conversations.