Unit 4 The Wonders of Nature预习学案 2025-2026学年人教版八年级英语下册

2026-01-20
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人教版2024八年级下册Unit 4 The Wonders of Nature预习学案 一、核心短语积累 A部分(基础核心短语,适配单元对话/阅读基础场景) 1. 参观自然奇观(侧重实地游览) 2. 描述自然景色的特征 3. 保护自然环境 4. 惊叹于自然之美(2种表达) 5. 了解自然奇观的形成原因 6. 记录自然现象 7. 避免破坏自然生态 8. 与家人探索自然奇观 9. 感受大自然的力量 10. 遵守自然保护区规定 11. 分享自然奇观的照片 12. 学习自然科学知识 13. 适应野外自然环境 14. 保护濒危动植物 15. 探索自然奇观的奥秘 16. 欣赏山川河流之美 17. 减少对自然的污染 18. 向他人介绍自然奇观 19. 观察自然中的生物 20. 因自然奇观而震撼 21. 制定自然探索计划 22. 尊重自然规律 B部分(拓展进阶短语,适配写作/演讲场景) 1. 因自然奇观的壮丽而心生敬畏/因生态破坏而深感惋惜 2. 用心记录自然之美/因过度开发而破坏自然风貌 3. 因亲近自然而身心舒畅/因自然灾害而忧心忡忡 4. 呼吁他人保护自然奇观/投身自然保护公益活动(2种表达) 5. 敢于制止破坏自然的行为 6. 不让珍贵的自然奇观因人类活动而消失 7. 对自然保护工作严格要求,坚守环保底线 8. 像环保使者一样传递守护自然的理念 9. 纠正“自然资源取之不尽”的错误认知 10. 做关于自然奇观探索的旅行计划(2种表达);决定参与濒危动物保护项目(2种表达) 11. 因坚持环保行动而改善局部生态/因忽视自然规律而遭受惩罚 12. 主动学习自然保护知识,相信能守护自然之美 13. 以自己的环保行动成果为骄傲(2种表达) 14. 也愿意带动身边人参与自然保护,共建美好家园(2种进阶表达) 15. 比之前更懂得敬畏自然/在自然知识储备上取得明显进步 16. 和同学一起开展自然保护宣传活动 二、重点语法预习(单元核心语法+时态结合,附易错点提示) 1. 定语从句(that/which引导,修饰自然奇观类名词) a. 基础例句:桂林山水是一处吸引无数游客的自然奇观。 b. 进阶例句:我们参观了一座形成于数百万年前的溶洞,它的景观令人惊叹。 c. 易错点:that/which在从句中作主语时不可省略,作宾语时可省略;先行词为物时用that/which,先行词为人时用who/whom,不可混用。 2. 一般现在时表客观事实(描述自然奇观特征、自然规律) a. 基础例句:瀑布从高处落下,形成壮观的自然景象。 b. 拓展例句:植物通过光合作用制造氧气,这是基本的自然规律。 c. 易错点:一般现在时表客观事实时,不受时间状语限制,主语为第三人称单数时,动词需正确变形(如produce-produces)。 3. 感叹句(what/how引导,赞美自然奇观) a. what引导例句:大自然真是一处多么神奇的地方啊! b. how引导例句:这处自然奇观的景色多么壮丽啊! c. 易错点:what后接“形容词+名词短语”,how后接“形容词/副词”;句末用感叹号,主谓结构需后置,不可语序混乱。 4. 现在进行时表当前动作(结合自然探索、环保行动) a. 基础例句:科学家们正在研究这处自然奇观的形成机制。 b. 拓展例句:我们正在清理景区垃圾,为保护自然环境贡献力量。 c. 易错点:现在进行时表当前正在进行的动作或现阶段持续的动作;动词-ing形式需注意拼写(如lie-lying、die-dying)。 三、词语变形积累(附构词法+自然场景用法提示) 1. nature n.(自然)- adj.________(自然的);________(天生的) 2. wonder n.(奇观;奇迹)- v.________(想知道);adj.________(奇妙的) 3. protect v.(保护)- n.________(保护);adj.________(受保护的) 4. beautiful adj.(美丽的)- adv.________(美丽地);n.________(美丽) 5. danger n.(危险)- adj.________(危险的);adj.________(濒危的) 6. explore v.(探索)- n.________(探索);n.________(探索者) 7. form v.(形成)- 过去式______- 过去分词________(规则变化) 8. see v.(看见;见证)- 过去式______- 过去分词________(不规则变化) 9. break v.(破坏;打破)- 过去式______- 过去分词________(不规则变化) 10. amazing adj.(令人惊叹的)- adj.________(感到惊叹的);adv.________(令人惊叹地) 11. strong adj.(强壮的;强大的)- n.________(力量);adv.________(强烈地) 12. pure adj.(纯净的)- adv.________(纯净地);n.________(纯净度) 13. pollute v.(污染)- n.________(污染);adj.________(被污染的) 14. appear v.(出现)- n.________(出现);adj.________(明显的);反义词________(消失) 15. act v.(行动)- n.________(行动);adj.________(积极的);搭配take ________ to do sth.(采取行动做某事) 四、预习小练习(适配自然主题,检验预习效果) (一)根据句意及汉语提示完成短语(每空1分,共5分) 1. We should ________ ________ ________(保护自然环境)and protect the wonders of nature. 2. She ________ ________ ________(惊叹于)the beauty of the waterfall when she visited it. 3. It’s our duty to ________ ________ ________(呼吁他人)protect endangered animals. 4. They are ________ ________ ________(探索奥秘)of the ancient forest with their teacher. 5. We must follow the rules of the nature reserve to ________ ________ ________(避免破坏)the ecosystem. (二)用所给词的适当形式填空(每空1分,共5分) 1. The Great Barrier Reef is one of the most amazing ________(nature)wonders in the world. 2. We should take action to protect the ________(danger)animals from disappearing. 3. The cave ________(form)millions of years ago and has become a popular scenic spot. 4. We were ________(amaze)by the wonderful views of the natural奇观 during the trip. 5. The government is trying to reduce environmental ________(pollute)to protect nature. (三)句型转换(每空1分,共5分) 1. This is a wonderful natural wonder.(改为感叹句)________ ________ wonderful natural wonder this is! 2. We visited a mountain. It was formed thousands of years ago.(合并为定语从句)We visited a mountain ________ ________ formed thousands of years ago. 3. Plants produce oxygen through photosynthesis.(改为一般疑问句)________ plants ________ oxygen through photosynthesis? 4. They are cleaning the rubbish in the scenic area.(对划线部分提问)What ________ they ________ in the scenic area? 5. We should protect the wonders of nature.(改为被动语态)The wonders of nature should ________ ________ by us. 五、参考答案与解析 (一)核心短语答案 A部分 1. visit natural wonders 2. describe the characteristics of natural scenery 3. protect the natural environment 4. be amazed at the beauty of nature;wonder at the beauty of nature 5. learn about the formation of natural wonders 6. record natural phenomena 7. avoid damaging the natural ecosystem 8. explore natural wonders with family 9. feel the power of nature 10. obey the rules of nature reserves 11. share photos of natural wonders 12. learn natural science knowledge 13. adapt to the wild natural environment 14. protect endangered animals and plants 15. explore the mysteries of natural wonders 16. admire the beauty of mountains and rivers 17. reduce pollution to nature 18. introduce natural wonders to others 19. observe creatures in nature 20. be shocked by natural wonders 21. make a natural exploration plan 22. respect the laws of nature B部分 1. feel awe at the grandeur of natural wonders/feel deeply sorry for ecological damage 2. record the beauty of nature carefully/destroy the natural landscape due to over-development 3. feel physically and mentally comfortable by getting close to nature/worry about natural disasters 4. call on others to protect natural wonders;take part in public welfare activities for nature protection 5. dare to stop behaviors that damage nature 6. not let precious natural wonders disappear due to human activities 7. be strict with nature protection work and stick to environmental protection bottom lines 8. convey the concept of guarding nature like an environmental protection messenger 9. correct the wrong perception that "natural resources are inexhaustible" 10. make a travel plan for exploring natural wonders;decide on a travel plan for exploring natural wonders(做计划);decide to take part in endangered animal protection projects;make a decision to take part in endangered animal protection projects(决定做) 11. improve the local ecology by adhering to environmental protection actions/suffer punishments for ignoring the laws of nature 12. take the initiative to learn nature protection knowledge and believe in guarding the beauty of nature 13. be proud of the results of one’s environmental protection actions;take pride in the results of one’s environmental protection actions 14. also be willing to drive people around to take part in nature protection and build a beautiful home together;as well as be willing to drive people around to take part in nature protection and build a beautiful home together 15. understand to respect nature better than before/make obvious progress in natural knowledge reserve 16. carry out nature protection publicity activities with classmates (二)词语变形答案与解析 1. natural(修饰名词,如natural wonders);born(天生的,如born ability)。构词法:nature变形容词加-al,born为特殊变形,表“天生的”。 2. wonder(动词,如wonder about the mystery);wonderful(形容词,如wonderful scenery)。构词法:wonder可直接作动词,变形容词加-ful。 3. protection(名词,如environmental protection);protected(形容词,如protected areas)。构词法:protect变名词加-ion,变形容词加-ed表“被保护的”。 4. beautifully(副词,如scenery beautifully presented);beauty(名词,如the beauty of nature); 5. dangerous(形容词,如dangerous animals);endangered(形容词,如endangered species); 6. exploration(名词,如natural exploration);explorer(名词,如a natural explorer)。 7. formed;formed(规则变化加-ed); 8. saw;seen(不规则变化); 9. broke;broken(不规则变化)。提示:form常见搭配be formed(被形成),break常见搭配break the rules(破坏规则)、broken ecosystem(受损的生态系统)。 10. amazed(修饰人,如amazed visitors);amazingly(副词,如amazingly beautiful); 11. strength(名词,如the strength of nature);strongly(副词,如feel strongly about protection); 12. purely(副词,如purely natural water);purity(名词,如water purity)。 13. pollution(名词,不可数,如air pollution);polluted(形容词,如polluted rivers)。提示:pollute为及物动词,常见搭配pollute the environment(污染环境)。 14. appearance(名词,如the appearance of rainbows);apparent(形容词,如apparent changes);disappear(动词,反义词,如disappear gradually)。 15. action(名词,如take action);active(形容词,如active in protection);action。搭配:take action to do sth.(采取行动做某事),action为不可数名词,不可说take actions。 (三)预习小练习答案与解析 根据句意及汉语提示完成短语 1. protect the natural environment。解析:固定短语,natural为形容词修饰environment,表“自然的环境”,为不可数名词。 2. was amazed at。解析:be amazed at表“惊叹于……”,结合visited可知用一般过去时,主语为she,be动词用was。 3. call on others to。解析:call on sb. to do sth.表“呼吁某人做某事”,为固定搭配,should后接动词原形。 4. exploring the mysteries。解析:explore the mysteries表“探索奥秘”,结合are可知用现在进行时,explore的-ing形式为exploring。 5. avoid damaging。解析:avoid doing sth.表“避免做某事”,为固定用法,damage为及物动词,后接宾语the ecosystem。 用所给词的适当形式填空 1. natural。解析:修饰名词wonders,用nature的形容词形式natural,表“自然的”。 2. endangered。解析:结合句意“保护濒危动物”,用danger的形容词形式endangered,表“濒危的”,区别于dangerous(危险的)。 3. formed。解析:millions of years ago提示用一般过去时,form的过去式为formed,表“(被)形成”。 4. amazed。解析:主语为we,用amaze的形容词形式amazed,表“感到惊叹的”,区别于amazing(令人惊叹的,修饰事物)。 5. pollution。解析:形容词environmental后接名词,pollute的名词形式为pollution,不可数名词,表“污染”。 句型转换 1. What a。解析:感叹句中心词为可数名词短语wonderful natural wonder,用what引导,wonderful为辅音音素开头,加不定冠词a。 2. that/which was。解析:合并为定语从句,先行词为mountain(物),关系代词用that/which,结合时态用一般过去时,be动词用was。 3. Do;produce。解析:一般现在时的一般疑问句,主语为plants(复数),助动词用do,后接动词原形produce。 4. are;doing。解析:对现在进行时的动作提问,用what+be动词+主语+doing,主语为they,be动词用are。 5. be protected。解析:被动语态结构为“be+过去分词”,情态动词should后接be动词原形,protect的过去分词为protected。 学科网(北京)股份有限公司 $

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Unit 4 The Wonders of Nature预习学案  2025-2026学年人教版八年级英语下册
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Unit 4 The Wonders of Nature预习学案  2025-2026学年人教版八年级英语下册
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Unit 4 The Wonders of Nature预习学案  2025-2026学年人教版八年级英语下册
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