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Quadruple VS

Synonym Boundary: "します", "する", "買い物する", "〜てしまう"

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

Japanese Option A

します

します (shimasu)
N5 / CEFR
Japanese Option B

する

する (suru)
N5 / CEFR
Japanese Option C

買い物する

かいものする (kaimono suru)
N4 / CEFR
Japanese Option D

〜てしまう

〜てしまう (te shimau)
N3 / CEFR

Quadruple VS Nuance Contrast & Social Differences

When expressing "do" in Japanese, you must carefully distinguish between "します", "する", "買い物する", "〜てしまう" based on context.
  • します (します (shimasu) - Level: N5): Maps to "to do, to make, to play (a sport)" and is used when 非常に多用途な動詞です。「〜をします」の形で、行動、スポーツ、仕事など様々な活動を表します。/ A very versatile verb. Used in the form '~をします' to express various activities, sports, or jobs..
  • する (する (suru) - Level: N5): Maps to "to do, to make" and is used when A very versatile verb. Polite form is します.
  • 買い物する (かいものする (kaimono suru) - Level: N4): Maps to "to do shopping" and is used when Used when referring to the act of buying things, typically at a store. Can be used with に.
  • 〜てしまう (〜てしまう (te shimau) - Level: N3): Maps to "to do completely; to do regrettably/unintentionally" and is used when Expresses either the completion of an action, often implying 'finished doing,' or an action done unintentionally or regrettably. In casual speech, it's often shortened to 〜ちゃう/〜じゃう.
Mixing these up can easily lead to unnatural translations. Refer to the bilingual context cards below to master the boundaries!
Context for "します"
毎日宿題をします。
I do my homework every day.
Context for "する"
毎日日本語を勉強します。
I study Japanese every day.
Context for "買い物する"
デパートで洋服を買い物しました。
I bought clothes at the department store.
Context for "〜てしまう"
大事な書類をなくしてしまいました。
I accidentally lost important documents.

Synonym Mastery Challenge

Which Japanese word perfectly fits this blank space?

Fill in the blank: "毎日宿題を ___ 。" (Meaning: "I do my homework every day.")
🎉 Correct Answer!

Remember: "します" is correct here because it represents "to do, to make, to play (a sport)" in the context: "I do my homework every day.".

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