🦅 Project Eagle
Quintuple VS

Synonym Boundary: "先週", "先月", "去年", "最後", "いよいよ"

All represent the core concept "last", but require precise selection.

Japanese Option A

先週

せんしゅう (senshū)
N5 / CEFR
Japanese Option B

先月

せんげつ (sengetsu)
N5 / CEFR
Japanese Option C

去年

きょねん (kyonen)
N5 / CEFR
Japanese Option D

最後

さいご (saigo)
N4 / CEFR
Japanese Option E

いよいよ

いよいよ (iyoyoa)
N3 / CEFR

Quintuple VS Nuance Contrast & Social Differences

When expressing "last" in Japanese, you must carefully distinguish between "先週", "先月", "去年", "最後", "いよいよ" based on context.
  • 先週 (せんしゅう (senshū) - Level: N5): Maps to "last week" and is used when Noun. A common time expression. Used when referring to the week before the current one..
  • 先月 (せんげつ (sengetsu) - Level: N5): Maps to "last month" and is used when Refers to the month immediately preceding the current one. Used when talking about past events..
  • 去年 (きょねん (kyonen) - Level: N5): Maps to "last year" and is used when Refers to the year immediately preceding the current one..
  • 最後 (さいご (saigo) - Level: N4): Maps to "last, end" and is used when Refers to the final part or moment of something. Contrasts with 最初.
  • いよいよ (いよいよ (iyoyoa) - Level: N3): Maps to "at last, finally, all the more, increasingly, indeed" and is used when Emphasizes the approach of a significant moment or event, or that something is becoming 'more and more' or 'indeed.' Often used for climactic moments or to signify a decisive stage..
Mixing these up can easily lead to unnatural translations. Refer to the bilingual context cards below to master the boundaries!
Context for "先週"
先週、新しい本を買いました。
I bought a new book last week.
Context for "先月"
先月、旅行に行きました。
I went on a trip last month.
Context for "去年"
去年、日本へ旅行に行きました。
I traveled to Japan last year.
Context for "最後"
最後に質問がありますか。
Do you have any questions at the end?
Context for "いよいよ"
長い準備期間を経て、いよいよ明日が発表会だ。
After a long preparation period, tomorrow is finally the presentation.

Synonym Mastery Challenge

Which Japanese word perfectly fits this blank space?

Fill in the blank: " ___ 、新しい本を買いました。" (Meaning: "I bought a new book last week.")
🎉 Correct Answer!

Remember: "先週" is correct here because it represents "last week" in the context: "I bought a new book last week.".

💡 Practice with AI! Live

Don't just read. Practice speaking this grammar with our interactive AI coach for free!

Try AI Speaking 👉