Quintuple VS
Synonym Boundary: "一", "もういちど", "片道", "億", "相次いで"
All represent the core concept "one", but require precise selection.
Japanese Option A
一
いち (ichi)
N5 / CEFR
Japanese Option B
もういちど
もういちど (mou ichido)
N5 / CEFR
Japanese Option C
片道
かたみち (katamichi)
N4 / CEFR
Japanese Option D
億
おく (oku)
N3 / CEFR
Japanese Option E
相次いで
あいついで (aitsuide)
N2 / CEFR
Quintuple VS Nuance Contrast & Social Differences
When expressing "one" in Japanese, you must carefully distinguish between "一", "もういちど", "片道", "億", "相次いで" based on context.
- 一 (いち (ichi) - Level: N5): Maps to "one" and is used when 数を数えるときに使います。ひとつ、一人、一日など、他の言葉と組み合わせて使われることも多いです。/ Used for counting. Often combined with other words like 'hitotsu'.
- もういちど (もういちど (mou ichido) - Level: N5): Maps to "One more time; Again" and is used when Used to request repetition or another attempt. Often combined with 「お願いします」.
- 片道 (かたみち (katamichi) - Level: N4): Maps to "one way, single trip" and is used when Describes a journey to a destination without returning. Often used with きっぷ.
- 億 (おく (oku) - Level: N3): Maps to "one hundred million (100,000,000)" and is used when A large numerical unit in Japanese. 1億 = 100,000,000. Often used for large amounts of money, population, or astronomical figures..
- 相次いで (あいついで (aitsuide) - Level: N2): Maps to "one after another; in succession" and is used when Describes multiple events or incidents happening consecutively. Often used for significant or repeated occurrences..
Context for "一"
りんごが一つあります。
There is one apple.
Context for "もういちど"
もう一度言ってください。
Please say it one more time.
Context for "片道"
彼は飛行機の片道チケットしか持っていませんでした。
He only had a one-way flight ticket.
Context for "億"
日本の人口は約1億2千万です。
Japan's population is approximately 120 million.
Context for "相次いで"
事故が相次いで発生した。
Accidents occurred one after another.
Synonym Mastery Challenge
Which Japanese word perfectly fits this blank space?
Fill in the blank: "りんごが ＿＿＿ つあります。" (Meaning: "There is one apple.")
🎉 Correct Answer!
Remember: "一" is correct here because it represents "one" in the context: "There is one apple.".