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Synonym Nuance VS

How to say "Be" in Japanese

Both words can translate to "be", but which should you choose?

Japanese Option A

役に立つ

やくにたつ (yaku ni tatsu)
N4 / CEFR Syllabus
VS
Japanese Option B

役立つ

やくだつ (yakudatsu)
N3 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "be" into Japanese, you must choose carefully between 役に立つ and 役立つ. In Japanese, 役に立つ (やくにたつ (yaku ni tatsu)) is typically associated with "to be useful, to be helpful" (Syllabus Level: N4) and represents A set phrase meaning to be useful or helpful for someone or something. It describes the utility of an object, skill, or person. Often followed by the particle に. On the other hand, 役立つ (やくだつ (yakudatsu)) maps to "to be useful, to be helpful" (Syllabus Level: N3) and represents An intransitive verb. Used to describe something that serves a purpose or provides assistance. Often followed by に.. A literal translation of "be" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "役に立つ"
この辞書は日本語の勉強に役に立ちます。
This dictionary is useful for studying Japanese.
Bilingual Context for "役立つ"
このアプリは毎日の仕事にとても役立ちます。
This app is very useful for daily work.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "この辞書は日本語の勉強に役に立ちます。" (Meaning: "This dictionary is useful for studying Japanese.")
🎉 Correct Answer!

Remember: "役に立つ" fits here because it means "to be useful, to be helpful" in the context of: "This dictionary is useful for studying Japanese.". "役立つ" represents "to be useful, to be helpful".

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