第四册：流利英语 · 单元 6 复习与自测

单元导读 · 单元语法总结 · 单元单词与短语 · 单元复习与自测

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 41 · with + 宾语 + 补足语

阅读材料（本站原创）： With the observer standing at a distance, the handler recorded the animal’s response.

练习 1

填空：With the notes ___, the team ended the session.（complete 的过去分词）

参考答案与解析

答案： completed

解析： notes 是被完成的，使用过去分词。

表达迁移： 写三句历史动物训练文本的批判性阅读笔记：叙述内容、证据限制、伦理问题。

表达参考与点评

The account describes an animal responding to a repeated cue. With no independent observations available, the claimed result is difficult to assess. A modern discussion should also consider the animal’s welfare.

把叙述、可验证性和伦理分开，不提供强制训练操作。

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Lesson 42 · 被动语态中的时态与体

阅读材料（本站原创）： The signal has been recorded, but the data are still being analysed.

练习 1

填空：The readings are being ___ now.（check）

参考答案与解析

答案： checked

解析： 现在进行时被动为 are being + 过去分词。

表达迁移： 写三句虚构仪器报告：已获取内容、正在处理的步骤、尚不能作出的判断。

表达参考与点评

The signal has been stored successfully. Its timing is still being compared with other records. We cannot yet draw a reliable conclusion about the event from this trace alone.

被动时态清楚标记处理阶段，末句限定单条记录的解释能力。

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Lesson 43 · there be 与存在命题

阅读材料（本站原创）： There may be a simpler explanation for the unusual signal.

练习 1

填空：There ___ two possible explanations in the report.

参考答案与解析

答案： are

解析： 正式书面语中 be 与后面的复数名词一致。

表达迁移： 写三句评价虚构异常信号：观察、替代解释、验证需求。

表达参考与点评

The receiver detected an unusual pattern. There may be an explanation within the instrument itself. Independent observations are needed before we attribute the signal to an external source.

从观察到解释保留推理间隔，先检验设备来源，避免把异常等同于发现。

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Lesson 44 · 限制性与非限制性从句的范围差异

阅读材料（本站原创）： The visitors who had attended the workshop recognised the greeting.

练习 1

示例是否说所有访客都参加了工作坊？

参考答案与解析

答案： 没有。

解析： 限制性从句只限定其中一组。

表达迁移： 写三句跨文化活动观察，明确样本并保留社群内部差异。

表达参考与点评

The participants who had joined earlier sessions recognised the greeting. Others asked about its meaning. Our guide reminded us that practices can vary within the same community.

用限制性从句划分观察对象，再说明内部多样性，避免绝对文化标签。

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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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