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第二十章 形容词从句减化

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      一、简化前提

      1. 形容词从句（又称定语从句）本质：由关系代词（that/which/who/whom/whose）或关系副词（when/where/why）引导，修饰主句中的先行词（名词/代词），在句中作定语，核心功能是“限定/描述先行词”。

      2. 简化核心逻辑：省略冗余的关系词和重复/空洞的主语、谓语（如be动词），保留核心修饰关系；从句动词根据“主从句主语关系”“动作语态”“时间逻辑”，转化为现在分词（V-ing）、过去分词（Ven）、不定式（to do） ，或简化为介词短语、形容词短语。

      1. 关键判断维度：

        • 关系词在从句中的成分（主语/宾语/状语）；

        • 主从句主语是否一致（从句主语=先行词/从句主语≠先行词）；

        • 从句动作的语态（主动/被动）和时间（进行/完成/将来）。

      二、核心规则与分场景简化方法

      （一）关系代词作从句主语（最核心场景）

      关系代词（that/which/who）在从句中作主语时，简化重点看“主从句主语是否一致”和“动作语态”：

      1. 主从句主语一致（从句主语=先行词）

        • 从句动作主动→简化为现在分词（V-ing，表“主动/进行”）；

          例：The girl who is singing on the stage is my classmate. → The girl singing on the stage is my classmate.

        • 从句动作被动→简化为过去分词（Ven，表“被动/完成”）；

          例：The book that was written by Mo Yan is popular. → The book written by Mo Yan is popular.

        • 从句为“be+形容词/介词短语”→省略关系词和be动词，保留形容词/介词短语；

          例：The boy who is tall and thin won the race. → The tall and thin boy won the race.

          例：The cup that is on the table is mine. → The cup on the table is mine.

      2. 主从句主语不一致（从句主语≠先行词）

        • 不可直接省略从句主语，需保留逻辑主语，构成“逻辑主语+分词”结构（或用“介词+逻辑主语”引出）；

          例：The novel that she wrote has been translated into English. → The novel written by her has been translated into English.（用by引出逻辑主语she）

        • 从句表将来→简化为“for+逻辑主语+to do”结构；

          例：The task that we will finish tomorrow is urgent. → The task for us to finish tomorrow is urgent.

      （二）关系代词作从句宾语

      关系代词（that/which/who/whom）在从句中作宾语时，可直接省略关系词；若需进一步简化，根据从句动作语态处理：

      1. 从句动作主动→保留主句结构（省略关系词即可），或简化为现在分词；

      例：The song that I am listening to is very nice. → The song I am listening to is very nice.（省略that，常用）

      例：The song that I am listening to is very nice. → The song being listened to by me is very nice.（进一步简化为被动分词，较少用）

      1. 从句动作被动→省略关系词和be动词，保留过去分词；

      例：The letter that he was asked to write is finished. → The letter he was asked to write is finished.（省略that）

      例：The letter that was asked to be written is finished. → The letter asked to be written is finished.（进一步简化，省略that和be）

      （三）关系副词引导的形容词从句（when/where/why）

      关系副词在从句中作状语，简化时需保留“时间/地点/原因”的逻辑，可省略关系词或转化为短语：

      1. when引导（修饰时间名词：day/time/moment等）

        • 省略when，保留从句剩余部分；

          例：I remember the day when I first met you. → I remember the day I first met you.

        • 从句表将来→简化为不定式to do；

          例：The time when we should start is 9 o’clock. → The time to start is 9 o’clock.

        • 简化为“介词+名词”短语；

          例：The year when he was born was 1990. → The year of his birth was 1990.

      2. where引导（修饰地点名词：park/school/hotel等）

        • 省略where，补全不及物动词的介词；

          例：The park where we played yesterday is big. → The park we played in yesterday is big.（play为不及物动词，加in）

        • 简化为介词短语或分词短语；

          例：The hotel where they are staying is near the station. → The hotel near the station is where they are staying.（介词短语）

          例：The hotel where they are staying is near the station. → The hotel being stayed at by them is near the station.（被动分词短语）

      1. why引导（修饰reason）

        • 省略why，保留从句剩余部分；

          例：The reason why he was late is clear. → The reason he was late is clear.

        • 简化为“for+名词/动名词”短语；

          例：The reason why she left early is unknown. → The reason for her leaving early is unknown.

      （四）特殊情况处理

      1. 否定式简化：not置于分词/不定式前（不可置于其后）；

      例：The man who is not working hard will be fired. → The man not working hard will be fired.

      例：The task that we should not finish late is important. → The task not to be finished late is important.

      1. 完成式动作：从句动作先于主句→用“having+过去分词”（主动）或“having been+过去分词”（被动）；

      例：The tree that has fallen down blocks the road. → The tree having fallen down blocks the road.（主动完成）

      例：The report that has been finished is on your desk. → The report having been finished is on your desk.（被动完成）

      1. 不定式表将来：当从句动作尚未发生时，简化为不定式（主动to do/被动to be done）；

      例：The person who will help us is coming. → The person to help us is coming.（主动将来）

      例：The project that will be completed next month is important. → The project to be completed next month is important.（被动将来）

      1. whose引导的所有格从句：简化为“whose+名词”或“of+所有格名词”；

      例：The girl whose hair is long is my sister. → The girl with long hair is my sister.（介词短语替代）

      例：The book whose cover is red is mine. → The book of red cover is mine.（of短语替代）

      三、常见错误提醒

      1. 主语不一致时漏逻辑主语：× The book written she is popular. → √ The book written by her is popular.（用by引出逻辑主语）；

      2. 被动语态简化误留be动词：× The letter that is sent yesterday arrived. → √ The letter sent yesterday arrived.（省略be动词）；

      1. 否定位置错误：× The man working not hard is lazy. → √ The man not working hard is lazy.（not置于分词前）；

      2. 关系副词省略后漏介词：× The park we played yesterday is big. → √ The park we played in yesterday is big.（不及物动词需补介词）；

      1. 将来动作误用分词：× The project finishing next month is important. → √ The project to be finished next month is important.（用不定式表将来）；

      2. 完成动作误用一般分词：× The tree fallen down blocks the road. → √ The tree having fallen down blocks the road.（用完成分词表动作先于主句）。