立彬の日本語
ジョンと私は古くからの友達です。
tbd
John and I are old friends.
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古く， ふるく
1. anciently, formerly
2. old times, a long time ago
tbd
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友達， 友だち， ともだち
1. friend, companion
朋友，同伴
と
1. if, when
2. and
3. with
4. used for quoting (thoughts, speech, etc.)
5. promoted pawn
6. indicates a question
表示引用
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
から
1. from (e.g. time, place, numerical quantity), since
2. from (originator), by
3. because, since
4. out of (constituent, part)
5. through (e.g. window, vestibule)
6. after, since
7. expresses sympathy or warning
从，自……；因为；被，用于……
の
1. indicates possessive
2. nominalizes verbs and adjectives
3. substitutes for "ga" in subordinate phrases
4. (at sentence-end, falling tone) indicates a confident conclusion
5. (at sentence-end) indicates emotional emphasis
6. (at sentence-end, risi...
句尾起强调作用；助词，表示所有关系
