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How to say "Be" in Japanese

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

Japanese Option A

遅れます

おくれます (okuremasu)
N5 / CEFR Syllabus
VS
Japanese Option B

思い込む

おもいこむ (omoikomu)
N3 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "be" into Japanese, you must choose carefully between 遅れます and 思い込む. In Japanese, 遅れます (おくれます (okuremasu)) is typically associated with "to be late, to be delayed" (Syllabus Level: N5) and represents Verb, polite form. Used when arriving after the scheduled time or when something is behind schedule. Often used with に. The dictionary form is 遅れる. On the other hand, 思い込む (おもいこむ (omoikomu)) maps to "to be under the impression that, to be convinced that, to be deluded into thinking" (Syllabus Level: N3) and represents To firmly believe something, often mistakenly, or to become deeply convinced of a belief. It implies a strong, sometimes incorrect, conviction.. A literal translation of "be" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "遅れます"
電車が遅れて、会社に遅れました。
The train was delayed, so I was late for work.
Bilingual Context for "思い込む"
彼は自分が天才だと思い込んでいる。
He is convinced that he is a genius.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "電車が遅れて、会社に遅れました。" (Meaning: "The train was delayed, so I was late for work.")
🎉 Correct Answer!

Remember: "遅れます" fits here because it means "to be late, to be delayed" in the context of: "The train was delayed, so I was late for work.". "思い込む" represents "to be under the impression that, to be convinced that, to be deluded into thinking".

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