第四册：流利英语 · 综合复习与自测 · 第45–48课

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先独立作答，再展开答案。下列原创题从相应课时选取，覆盖本范围每一课；错题请回到课时讲解解释错误原因，再替换一个条件重做。

Lesson 45 · no more than 与 not more than

阅读材料（本站原创）： The summary contained no more than three pages, yet it raised questions the committee had overlooked.

练习 1

not more than 10 是否允许恰好10？

参考答案与解析

答案： 允许。

解析： 意思是不超过10。

表达迁移： 用三句评论一份虚构科学摘要：篇幅、提出的问题、社会决策还需要什么。

表达参考与点评

The summary contains no more than three pages. It explains a technical possibility but leaves its wider consequences open. Any public decision would also need discussion of costs, responsibilities and competing aims.

以少量文字与广泛影响形成对照，再区分技术可能性与公共判断，不把科学能力直接等同于社会选择。

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Lesson 46 · would rather 与 prefer 的补语

阅读材料（本站原创）： I would rather repair an old radio than buy another one.

练习 1

填空：She prefers drawing ___ collecting stamps.

参考答案与解析

答案： to

解析： prefer doing A to doing B。

表达迁移： 用三句介绍一种不以成绩为目的的爱好，包含偏好、过程和个人价值。

表达参考与点评

I would rather make a small wooden box than watch another series. Measuring and shaping the pieces requires my full attention. I enjoy the activity for its own sake, even when the result is imperfect.

选择结构引入爱好，具体过程说明体验，让步句保留不完美作品的价值。

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Lesson 47 · 篇章指代与 this + 概括名词

阅读材料（本站原创）： We expected the trip to remove every worry. That expectation proved unrealistic.

练习 1

示例中的 That expectation 指什么？

参考答案与解析

答案： 旅行能消除所有烦恼的期待。

解析： 概括名词回指前句整项想法。

表达迁移： 写三句露营反思：出发前期待、实际体验、用概括名词连接认识。

表达参考与点评

I expected camping to be no more than a cheaper holiday. Sharing a table with strangers changed my view. That experience made conversation, rather than cost alone, the most memorable part of the trip.

露营场景呼应本课主题；That experience 明确回指与陌生人同桌交流，比较结构说明动机和收获不止费用。

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Lesson 48 · 决策段落中的 however、therefore 与条件

阅读材料（本站原创）： The two plans serve different objectives; therefore, comparing returns alone would be misleading.

练习 1

改标点：The assumptions differ, therefore the results are not directly comparable.

参考答案与解析

答案： The assumptions differ; therefore, the results are not directly comparable.

解析： therefore 不是并列连词，不能仅用逗号连接独立句。

表达迁移： 写三句虚构方案评估，不给投资建议：明确目标、指出一种不确定性、说明比较原则。

表达参考与点评

The first step is to define the purpose of the hypothetical portfolio. Future outcomes remain uncertain, even when the choices are spread across several categories. Therefore, any comparison should consider assumptions and constraints as well as possible returns.

按目标、不确定性、评价原则展开；未承诺分散一定获利，也未给出个人买卖建议。

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