立彬の日本語
婦人のいる所では帽子をとらなければならない。
tbd
You must take off your hats in the presence of ladies.
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婦人， ふじん
1. woman, lady, adult female
女性、女士、成年女性
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帽子を取る， 帽子をとる， ぼうしをとる
1. to take off one's hat
tbd
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なければならない， なければなりません， なければいけない
1. have to do, must, should, ought to
必须，应该
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
いる， 居る
1. to be (of animate objects), to exist
2. to stay
3. to be ...-ing, to have been ...-ing
存在(指有生命的事物)；停留；正在……，曾经……(状态一直持续)
で
1. at, in
2. at, when
3. by, with
4. within, in
5. and then, so
6. and, then
7. let me tell you, don't you know
表示范围
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