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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

担当する

たんとうする (tantō suru)
N3 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "be" into Japanese, you must choose carefully between 役に立つ and 担当する. 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, 担当する (たんとうする (tantō suru)) maps to "to be in charge of; to take responsibility for; to be responsible for" (Syllabus Level: N3) and represents Often used in business or formal settings to indicate being responsible for a specific role, task, or department. It implies taking on a duty or charge.. 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 "担当する"
私はこのプロジェクトの管理を担当しています。
I am in charge of managing this project.

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.". "担当する" represents "to be in charge of; to take responsibility for; to be responsible for".

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