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For Life

With just two months remaining before the start of winter, we can't help but be amazed at how time flies. So it's with time on our minds that we bring you the Tuesday edition!

Today's LessonCATEGORY: 混同しやすい言葉
IN vs. WITHIN   〜後に vs. 〜以内に


  • When talking about time:

    In usually means “at the end of a period of time.”

    Within means “at the end of a period of time OR SOONER.”
  • 時間について使う場合、
    in は通常、ある時間の終わりに、という意味です。
    within は、ある期間以内に、または、それより早く、という意味です。



  1. Tickets went on sale at 9:00 this morning and sold out (= were all sold) in 25 minutes.
  2. (leaving on a business trip)
    I'll be back in three days.
  3. The festival starts in exactly two weeks from today. I can't wait!
  4. He solved the first problem in five minutes, and within an hour he had solved all the rest.
  5. (a long-distance runner)
    My goal is to be world champion within three years.

英会話レッスンIt's been a pleasure!