U1介绍植物相关知识及价值-2025-2026学年高中英语期末写作复习选择性必修2（重大版）

初中英语写作专项突破 (重庆大学版选择性必修第二册) 写作话题精讲·词汇句型·范文示范 写作话题U1:介绍植物相关知识及价值 适用年级： 选择性必修第二册 对应版本： 重庆大学版 常考题日： Introduce a Kind of Plant and Its Value The Importance of Protecting Endangered F 一、话题解读 本话题是重庆大学版高中英语选择性必修第二册U1的重点写作内容。常考题目有“Introduce a Kind of Plant and Its Value”“The Importance of Protecting Endangered Plants”等，核 心考察学生对植物知识的掌握与价值阐述的语言表达能力。该话题在高中英语写作中多以说 明文形式出现，是选择性必修阶段期中、期末的常见话题。 二、核心词汇与短语 1.核心词汇(18个)： 1.photosynthesis/,feuteu'sIneesIs/n.光合作用 2.biodiversity/baIa5dar'v3sati/n.生物多样性 3.ecosystem/i:keusIstem/n.生态系统 4.sustainability/se,steine'bIleti/n.可持续性 5.adaptation/edep'teI[n/n.适应；适应性 6.pollination/,pola'neIn/n.授粉 7.photosynthetic/,feuteusIn'etk/adj.光合的 8.indigenous/in'dtd3 enes/adj.本土的；土著的 9.medicinal/.ma'dIsInl/adj.药用的 10.photosynthesize/feuteu'sIneesaIz/V.进行光合作用 11.preservation/,preza'veIn/n.保护；保存 12.symbiosis/sImbaI'asIs/n.共生 13.vegetation/,ved3 'teI [n/n.植被 2 14.herbaceous/h3:'bees/adj.草本的 15.xylem/'zaIlem/n.木质部 16.phloem/'fle5em/m.韧皮部 17.germination/,d33:mI'nerfn/n.发芽；萌发 18.photosynthate/feute心'sIneeit//n.光合产物 2.核心短语(13个)： 1.carbon cycle碳循环 2.oxygen production氧气产生 3.natural resources自然资源 4.environmental balance环境平衡 5.traditional medicine传统医学 6.food chain食物链 7.genetic diversity遗传多样性 8.ecological niche生态位 9.plant adaptation植物适应 10.medicinal value药用价值 11.sustainable development可持续发展 12.pollinator species传粉物种 13.photosynthetic efficiency光合效率 三、高级句型模板 1.结构：“only+状语”倒装结构 Only by understanding the process of photosynthesis can we fully appre- ciate plants'role in the carbon cycle. 2.结构：非限制性定语从句 Plants maintain environmental balance through oxygen production,which enables us to sustain life on Earth. 3.结构：形式主语t句型 It is essential that we(should)protect biodiversity to ensure the stability of ecosystems. 4.结构：让步状语从句 3 Although some plants have small ecological niches,they still play irre- placeable roles in the food chain. 5.结构：现在分词作状语 Studying plant adaptation,scientists can develop strategies for sustain- able development. 6.结构：动名词作主语句型 Preserving indigenous vegetation is an effective way to maintain genetic diversity. 7.结构：not only.but also..并列结构 Not only can plants provide food resources,but also they can offer medic- inal value for traditional medicine. 8.结构：“the+比较级，the+比较级.”句型 The more we learn about plant photosynthetic efficiency,the better we will utilize natural resources. 四、满分范文示范 Introduce a Kind of Plant and Its Value Plants are the cornerstone of life on Earth,and one remarkable example is the indigenous herbaceous plant *Ginkgo biloba*,which showcases extraordinary ecological and medicinal value. At the core of its survival lies photosynthesis,the process by which it converts sunlight into energy.Through photosynthesis,*Ginkgo biloba*not only produces oxygen but also con- tributes to the carbon cycle,maintaining environmental balance.Its xylem and phloem effi- ciently transport water and photosynthates,ensuring robust growth even in harsh conditions -a testament to plant adaptation. Beyond ecological roles,this plant plays a vital part in traditional medicine.Its leaves contain compounds with significant medicinal value,used to improve blood circulation and cognitive function.Not only does it serve as a medicinal resource,but it also supports biodiversity by providing food and shelter for pollinator species,thus sustaining the local ecosystem. It is crucial that we protect such plants,as their preservation is key to genetic diversity and sustainable development.Only by understanding and valuing their ecological niche can we ensure their survival for future generations.The more we study plants like *Ginkgo biloba*, the better we will appreciate their irreplaceable role in maintaining our planet's health. In conclusion,plants are not merely static organisms but dynamic contributors to life.Pro tecting them is protecting ourselves and the delicate web of life we depend on