资源简介 2026年中考英语长难句训练第九天原句一:When the students who joined the robotics club tested the machine that could sort waste automatically, they found that its efficiency was higher than they had expected.(2025安徽)一、句子成分与结构填空题(共 6 处) 句首 "When the students who joined the robotics club tested the machine" 是______从句,引导词是______,表示______关系。"who joined the robotics club" 是______从句,引导词是______,修饰的先行词是______,引导词在从句中作______成分。"that could sort waste automatically" 是______从句,引导词是______,修饰的先行词是______。"that its efficiency was higher" 是______从句,由______引导,在主句中作______成分。"than they had expected" 是______从句,引导词是______,修饰形容词______。主句的主语是______,谓语动词是______。二、填空答案与解析 答案:时间状语;When;时间(当…… 时)解析:"When the students...tested the machine" 是时间状语从句,由 When 引导,表“当学生们测试机器时”的时间背景,主从句均用一般过去时(tested/found),体现过去同时发生的动作。答案:定语;who;students;主语解析:"who joined the robotics club" 是定语从句,关系代词 who 指代先行词 "students",在从句中作主语(承担“加入机器人社团”的动作),修饰“参与测试的学生”,引导词不可省略。答案:定语;that;machine解析:"that could sort waste automatically" 是定语从句,关系代词 that 指代先行词 "machine",在从句中作主语(机器能自动分类垃圾),说明机器的功能,引导词不可省略。答案:宾语;that;宾语解析:"that its efficiency was higher" 是宾语从句,由 that 引导,作主句谓语动词 "found" 的宾语,说明学生“发现的内容”。that 无实际意义,从句用一般过去时(was)呼应主句时态。答案:比较状语;than;higher解析:"than they had expected" 是比较状语从句,由 than 引导,修饰形容词比较级 "higher",表示“比预期更高”,从句用过去完成时 "had expected",强调“预期”发生在“发现”之前。答案:they;found解析:主句为 "they found that...","they" 指代前文的 "the students",作主语;"found" 是一般过去时谓语,是主句的核心动作。三、句子结构成分详细分析1. 主句结构:they found that its efficiency was higher than they had expected主语:they(指代学生)谓语:found宾语:that 引导的宾语从句2. 时间状语从句结构:When the students who joined the robotics club tested the machine that could sort waste automatically引导词:When主语:the students定语从句:who joined the robotics club(修饰 students)谓语:tested宾语:the machine定语从句:that could sort waste automatically(修饰 machine)3. 定语从句 1(修饰 students)结构:who joined the robotics club引导词:who(作主语)谓语:joined宾语:the robotics club4. 定语从句 2(修饰 machine)结构:that could sort waste automatically引导词:that(作主语)谓语:could sort宾语:waste状语:automatically(方式状语)5. 宾语从句结构:that its efficiency was higher than they had expected引导词:that主语:its efficiency(机器的效率)系动词:was表语:higher比较状语从句:than they had expected6. 比较状语从句结构:than they had expected引导词:than主语:they谓语:had expected宾语:省略(完整形式为 "than they had expected it to be")四、翻译逐部分翻译: When the students who joined the robotics club tested the machine that could sort waste automatically:当加入机器人社团的学生测试这台能自动分类垃圾的机器时they found:他们发现that its efficiency was higher:它的效率更高than they had expected:比他们预期的整句翻译:当加入机器人社团的学生测试这台能自动分类垃圾的机器时,他们发现其效率比预期的更高。五、语法知识总结多重定语从句:句子中 "students" 和 "machine" 分别被定语从句修饰,形成“名词 + 定语从句”的多层修饰结构,"the students who joined...the machine that could...",体现英语“定语后置”的特点。比较状语从句的时态:比较状语从句用过去完成时 "had expected",强调“预期”发生在主句动作 "found" 之前,符合“过去的过去”时态规则,如 "She was taller than I had thought"。情态动词 could 的用法:定语从句中 "could sort" 表示机器的“能力”,could 是 can 的过去式,与主句时态一致(一般过去时),如 "The robot could work 24 hours a day"。固定搭配:join a club 加入社团;sort waste 分类垃圾;higher than expected 比预期更高。原句二:Because the researchers who studied the rare birds found that their habitat had been destroyed by human activities, they decided to set up a protected area where the birds can breed safely.(2025山东)一、句子成分与结构填空题(共 6 处)句首 "Because the researchers who studied the rare birds found that..." 是______从句,引导词是______,表示______关系。"who studied the rare birds" 是______从句,引导词是______,修饰的先行词是______,引导词在从句中作______成分。"that their habitat had been destroyed by human activities" 是______从句,由______引导,在主句中作______成分。"where the birds can breed safely" 是______从句,引导词是______,修饰的先行词是______。主句的主语是______,谓语动词是______。过去完成时 "had been destroyed" 表示动作发生在______之前。二、填空答案与解析答案:原因状语;Because;因果(因为)解析:"Because the researchers...found that..." 是原因状语从句,由 Because 引导,表“因为…… 所以……”的因果关系,解释主句“决定建立保护区”的原因。答案:定语;who;researchers;主语解析:"who studied the rare birds" 是定语从句,关系代词 who 指代先行词 "researchers",在从句中作主语(承担“研究”的动作),修饰“研究稀有鸟类的研究人员”。答案:宾语;that;宾语解析:"that their habitat had been destroyed..." 是宾语从句,由 that 引导,作主句谓语动词 "found" 的宾语,说明研究人员“发现的内容”。that 无实际意义,从句用过去完成时被动语态(had been destroyed),强调栖息地破坏发生在“发现”之前。答案:定语;where;area;地点状语解析:"where the birds can breed safely" 是定语从句,关系副词 where 指代先行词 "area",在从句中作地点状语(“在保护区里”繁殖),修饰“保护区”的功能。答案:they;decided解析:主句为 "they decided to set up a protected area...","they" 指代前文的 "researchers",作主语;"decided" 是一般过去时谓语,是主句的核心动作。答案:主句动作(found)解析:过去完成时 "had been destroyed" 表示“栖息地被破坏”的动作发生在主句动作 "found"(发现)之前,体现“过去的过去”的时间逻辑。三、句子结构成分详细分析主句结构:they decided to set up a protected area where the birds can breed safely主语:they(研究人员)谓语:decided宾语:to set up a protected area(不定式短语作宾语)定语从句:where the birds can breed safely(修饰 area)原因状语从句结构:Because the researchers who studied the rare birds found that their habitat had been destroyed by human activities引导词:Because(表原因)主语:the researchers定语从句:who studied the rare birds(修饰 researchers)谓语:found宾语:that 引导的宾语从句(their habitat had been destroyed...)定语从句 1(修饰 researchers)结构:who studied the rare birds引导词:who(作主语)谓语:studied宾语:the rare birds宾语从句结构:that their habitat had been destroyed by human activities引导词:that主语:their habitat(鸟类的栖息地)谓语:had been destroyed(过去完成时被动语态)动作执行者:by human activities(介词短语表被动主体)定语从句 2(修饰 area)结构:where the birds can breed safely引导词:where(作地点状语)主语:the birds谓语:can breed状语:safely(方式状语)四、翻译训练逐部分翻译:Because the researchers who studied the rare birds found that their habitat had been destroyed by human activities:因为研究稀有鸟类的研究人员发现它们的栖息地已被人类活动破坏they decided to set up a protected area:他们决定建立一个保护区where the birds can breed safely:让鸟类可以安全繁殖的(保护区)整句翻译:因为研究稀有鸟类的研究人员发现它们的栖息地已被人类活动破坏,所以他们决定建立一个让鸟类可以安全繁殖的保护区。五、语法知识总结过去完成时被动语态:结构:had been + 过去分词(如 had been destroyed),表示“过去某一时间之前已被完成的被动动作”,常与一般过去时搭配。定语从句引导词 where:指代地点名词(如 area),在从句中作地点状语,相当于 "in which",如 "the area where birds breed" = "the area in which birds breed"。原因状语从句:Because 引导的从句直接说明原因,语气最强,可回答 why 的提问,如 "Why did they set up a area Because the habitat was destroyed."不定式作宾语:"decided to set up" 中,不定式短语 to set up 作宾语,常见于 decide/plan/want 等动词后,如 "want to go home"。固定搭配:set up a protected area 建立保护区;breed safely 安全繁殖;be destroyed by 被…… 破坏。 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