立彬の日本語
警察官はその殺人事件をとことん調査し始めた。
tbd
The police began to go into the murder case.
The police started to look into the murder case.
375
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警察官， けいさつかん
1. police officer, policeman, policewoman
警官
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その， そん， 其の
1. that, the
2. part (as in "part two")
3. um ..., er ..., uh ...
那个；部分（如“第二部分”）
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殺人事件， さつじんじけん
1. murder case
tbd
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を
1. indicates direct object of action
2. indicates subject of causative expression
3. indicates an area traversed
4. indicates time (period) over which action takes place
5. indicates point of departure or separation of action
6. indicates object of d...
表示动作的直接对象；表示经过的场所；表示离开或分开的点
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とことん
1. the very end, finish
2. to the very end, to the last, thoroughly, completely, fully
tbd
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調査， ちょうさ
1. investigation, examination, inquiry, enquiry, survey
调查
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し始める， 為始める， 仕始める， しはじめる
1. to begin (doing), to start (doing)
tbd
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
