立彬の日本語

彼らはアメリカ人にちがいない。

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They must be Americans.
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アメリカ人, アメリカじん
1. American person
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違いない, 違い無い, ちがいない
1. sure, no mistaking it, for certain, without doubt
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彼ら(かれら)
彼ら, 彼等, かれら
1. they, them
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1. indicates sentence topic 2. indicates contrast with another option (stated or unstated) 3. adds emphasis
指示句子的主题
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1. at (place, time), in, on, during 2. to (direction, state), toward, into 3. for (purpose) 4. because of (reason), for, with 5. by, from 6. as (i.e. in the role of) 7. per, in, for, a (e.g. "once a month") 8. and, in addition to 9. if, although
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