{
  "updatedAt": "2026-08-05 12:00:00",
  "source": "local PDF text extraction, no OCR",
  "notes": "Only original sentences from directly extractable PDFs are included. Scanned PDFs are excluded until OCR.",
  "items": [
    {
      "verified": true,
      "id": "bec_writing_70_001",
      "level": "preliminary",
      "difficulty": 1,
      "source": "BEC写作需掌握的70个关键句型 / PDF page 1",
      "sourceFile": "D:\\BEC\\初级\\35个学习文档资料\\BEC写作需掌握的70个关键句型.pdf",
      "sourcePage": "PDF page 1",
      "bookName": "BEC写作需掌握的70个关键句型",
      "scene": "sentence pattern",
      "sentences": [
        "She had said what it was necessary to say."
      ],
      "text": "She had said what it was necessary to say.",
      "keywords": [
        "necessary",
        "say"
      ],
      "corePatterns": [
        "what it was necessary to"
      ],
      "estimatedMinutes": 6
    },
    {
      "verified": true,
      "id": "bec_writing_70_002",
      "level": "preliminary",
      "difficulty": 1,
      "source": "BEC写作需掌握的70个关键句型 / PDF page 1",
      "sourceFile": "D:\\BEC\\初级\\35个学习文档资料\\BEC写作需掌握的70个关键句型.pdf",
      "sourcePage": "PDF page 1",
      "bookName": "BEC写作需掌握的70个关键句型",
      "scene": "emphasis",
      "sentences": [
        "It is not who rules us that is important, but how he rules us."
      ],
      "text": "It is not who rules us that is important, but how he rules us.",
      "keywords": [
        "important",
        "how"
      ],
      "corePatterns": [
        "It is not ... that ... but ..."
      ],
      "estimatedMinutes": 7
    },
    {
      "verified": true,
      "id": "bec_writing_70_009",
      "level": "preliminary",
      "difficulty": 1,
      "source": "BEC写作需掌握的70个关键句型 / PDF page 1",
      "sourceFile": "D:\\BEC\\初级\\35个学习文档资料\\BEC写作需掌握的70个关键句型.pdf",
      "sourcePage": "PDF page 1",
      "bookName": "BEC写作需掌握的70个关键句型",
      "scene": "promise",
      "sentences": [
        "The merchant as good as promised the orphan boy that he would adopt him."
      ],
      "text": "The merchant as good as promised the orphan boy that he would adopt him.",
      "keywords": [
        "promised",
        "adopt"
      ],
      "corePatterns": [
        "as good as promised"
      ],
      "estimatedMinutes": 7
    },
    {
      "verified": true,
      "id": "bec_writing_70_035",
      "level": "preliminary",
      "difficulty": 2,
      "source": "BEC写作需掌握的70个关键句型 / PDF page 6",
      "sourceFile": "D:\\BEC\\初级\\35个学习文档资料\\BEC写作需掌握的70个关键句型.pdf",
      "sourcePage": "PDF page 6",
      "bookName": "BEC写作需掌握的70个关键句型",
      "scene": "reason",
      "sentences": [
        "The budget is unrealistic in that it disregards increased costs."
      ],
      "text": "The budget is unrealistic in that it disregards increased costs.",
      "keywords": [
        "budget",
        "unrealistic",
        "costs"
      ],
      "corePatterns": [
        "in that"
      ],
      "estimatedMinutes": 7
    },
    {
      "verified": true,
      "id": "bec_writing_70_040",
      "level": "preliminary",
      "difficulty": 2,
      "source": "BEC写作需掌握的70个关键句型 / PDF page 7",
      "sourceFile": "D:\\BEC\\初级\\35个学习文档资料\\BEC写作需掌握的70个关键句型.pdf",
      "sourcePage": "PDF page 7",
      "bookName": "BEC写作需掌握的70个关键句型",
      "scene": "condition",
      "sentences": [
        "No increase in output can be expected unless a new assembly line is installed."
      ],
      "text": "No increase in output can be expected unless a new assembly line is installed.",
      "keywords": [
        "increase",
        "output",
        "unless"
      ],
      "corePatterns": [
        "No ... can be expected unless ..."
      ],
      "estimatedMinutes": 8
    },
    {
      "verified": true,
      "id": "bec_writing_70_048",
      "level": "vantage",
      "difficulty": 3,
      "source": "BEC写作需掌握的70个关键句型 / PDF page 8",
      "sourceFile": "D:\\BEC\\初级\\35个学习文档资料\\BEC写作需掌握的70个关键句型.pdf",
      "sourcePage": "PDF page 8",
      "bookName": "BEC写作需掌握的70个关键句型",
      "scene": "range",
      "sentences": [
        "Computer applications range from an assembly line completely run by computers to a children's toy responding to remote signals."
      ],
      "text": "Computer applications range from an assembly line completely run by computers to a children's toy responding to remote signals.",
      "keywords": [
        "range",
        "assembly",
        "signals"
      ],
      "corePatterns": [
        "range from ... to ..."
      ],
      "estimatedMinutes": 9
    },
    {
      "verified": true,
      "id": "bec_v_sample_sentence_001",
      "level": "vantage",
      "difficulty": 2,
      "source": "Cambridge English Business Vantage Sample Paper 1 Reading / PDF page 2",
      "sourceFile": "D:\\BEC\\中级\\bec中级资料(25年完整版)\\BEC中高级样题\\22059-business-vantage-sample-papers-1\\cambridge-english-business-vantage-sample-paper-1-reading v2.pdf",
      "sourcePage": "PDF page 2",
      "bookName": "Cambridge English Business Vantage Sample Paper 1 Reading",
      "scene": "retailing",
      "sentences": [
        "Successful retailers must try to keep on top of these developments and invest in the training of employees."
      ],
      "text": "Successful retailers must try to keep on top of these developments and invest in the training of employees.",
      "keywords": [
        "retailers",
        "developments",
        "training"
      ],
      "corePatterns": [
        "keep on top of"
      ],
      "estimatedMinutes": 9
    },
    {
      "verified": true,
      "id": "bec_v_sample_sentence_002",
      "level": "vantage",
      "difficulty": 3,
      "source": "Cambridge English Business Vantage Sample Paper 1 Reading / PDF page 4",
      "sourceFile": "D:\\BEC\\中级\\bec中级资料(25年完整版)\\BEC中高级样题\\22059-business-vantage-sample-papers-1\\cambridge-english-business-vantage-sample-paper-1-reading v2.pdf",
      "sourcePage": "PDF page 4",
      "bookName": "Cambridge English Business Vantage Sample Paper 1 Reading",
      "scene": "marketing",
      "sentences": [
        "By identifying the stage that a product is in, companies can formulate better marketing plans."
      ],
      "text": "By identifying the stage that a product is in, companies can formulate better marketing plans.",
      "keywords": [
        "identifying",
        "stage",
        "marketing"
      ],
      "corePatterns": [
        "By ... companies can ..."
      ],
      "estimatedMinutes": 8
    }
  ]
}