Unit 5 working the land 重点单词讲解 课件-2026-2027学年高中英语人教版选择性必修第一册

该高中英语课件聚焦核心词汇教学，涵盖boost、root、yield等多义词及固定搭配，通过真题例句、现实语料导入，构建从基础词义、近义词辨析到语境应用的学习支架，帮助学生系统掌握词汇用法。 其亮点在于融合语言能力与思维品质培养，通过高考真题例句（如23年阅读yield用法）和现实情境（如吉林雪休政策boost旅游）强化词汇应用，综合练习与语篇写作任务（如食物浪费演讲）提升学生语言表达与问题解决能力，为教师提供系统化教学资源，助力高效课堂。

Working the land ——language points 1. boost  v.使增长，推动, 增强，提高; n.帮助，激励, 增长 近义词： 增加:______________       提高：_______________         增强:______________   激励:_________________ 根据语境，写下划线部分含义 1)This new technique will boost food production. ________ 2) The publication of this book boosts my confidence.________ 3)We need a holiday to boost our spirits.________ 4)This will be a great boost to the economy.________ 5) Getting the job gave him a terrific (极好的) boost.________ increase improve/enhance/raise strengthen motivate/inspire/stimulate 提高/促进 提高/增强 振奋/激发 推动 激励/鼓舞 2. root n.根（部）, 根源, 起源, 祖籍, 词根; v.（使）生根 近义词：origin n.起源；出身→_____________ adj.原始的；最初的→_____________ vi.起源于 写出下列句子中画线部分的汉语释义。 1) Tree roots drink a lot of water, so remember to water what you plant. _________ 2) “Walk” is the root of “walks”, “walked”, “walking” and “walker”. _________ 3) We need to get to the root of the problem before we can solve it.（2015 天津)_________ 4) Desert elephants seldom root up trees and break fewer branches, and thus maintain what little food sources are available. _________ 5) Frightened, I stood rooted to the spot, unable to utter any word. _________ 6) Feudal(封建的) thoughts are deep-rooted in our culture. It takes time for new ideas to take root. _________ _________ original originate 树根 词根 根源 连根拔起 站着一动不动 根深蒂固 扎根；被接受；深入人心 3. vision  n.视力, 视野, 想象，幻象, 远见卓识→_____________ vt.设想, 想象, 预想→__________ adj.视觉的, 视力的  近义词：视野；视力_______________     imagine vt.想象→_____________ n.想象力；→_____________ adj.富有想象力的→ imaginary adj.______________→imaginable adj._____________  写出下列句子中画线部分的汉语释义。 1) She has very little vision in her left eye.     ________ 2) That’s my vision of how the world could be.     ________ 3) We need a leader with vision and strong principles.  ________ 4.)They envision an equal society, free of poverty and disease.  ________ envision visual sight/view imagination imaginative 虚构的 可想象的 视力 设想 远见 想象/憧憬 4. digest  v.消化, 理解; n.摘要, 文摘 写出下列句子中画线部分的汉语释义。 1) Cheese doesn’t digest easily. ___________ 2) They learn well but seem to need time to digest information. ___________ 3) All this has upset me. I need time to digest it all. ___________ 4) I read only this digest of the novel. ___________ 消化 吸收/领会 承受/消化 摘要 5. yield  v.产生, 屈服，让步, 放弃, 让路; n.收益, 产量 根据例句，写出划线部分含义 1) The farm yields high-quality wheat every year.   ___________ 2) Favourable weather can improve the yield of the crop.             ___________ 3) She refused to yield to difficulties.                                 ___________ 4) He yielded his seat to the elderly woman.                            ___________ 5)She’s watched you go through red lights and stop signs, turn without signaling, fail to yield at the crossroads, or hesitate at a stop sign and then pull out into her path at the last millisecond. (23年高考阅读)                                       ___________         总结：向......让步/屈服________________     近义表达:___________________________ 产出 产量 屈服/低头 让座 让路 yield to... bow to.../ bend to... /give in to... 6. consume v.消耗, 吞噬, 充满（感情）, 吃喝, 烧毁→____________ n.消费；消耗→__________ n.消费者   近义词：顾客__________     形近词：assume vt.____________ →____________ n. [拓展]与“消费、花费”相关的表达 spend vt. → __________ n.花费；消费   pay vt.→ __________ n. 支付    cost vt./n→ _________adj.昂贵的  根据例句，写出划线部分含义 1) The new air conditioner consumes less electricity.                    ___________ 2) The fire consumed the entire building.              ___________ 3) This drink is not recommended for children to consume.              ___________ 4) She was consumed with guilt after telling the lie.                     ___________ consumption consumer customer 假设；认为； 承担 assumption spending payment costly 消耗/耗电 吞噬 饮用/食用 充满(消极感情) 1. 当门外的黑影在慢慢靠近时，我感到十分害怕。 2. 意识到他误解了他的朋友，他很后悔。 As the dark figure approached, fear consumed me/ I was consumed with fear. Realizing he misunderstood his friend, he was consumed with regret. 7. generate  (21) vt.产生，造成, 引起→____________n.一代；产生   近义词：produce vt.生产；产生n.农产品→____________n.产品→____________n.生产→____________生产力→____________adj. 富有成效的, 多产的   造成/引起：____________________ 根据例句，写出划线部分含义 1) A study by the Food Waste Alliance determined that the average restaurant generates 33 pounds of food waste for every $l,000 in revenue(收入), and of that waste only 15.7% is donated or recycled.(25年高考阅读)                                                    ___________ 2) White faces generated by artificial intelligence (AI) now appear more real than human faces, according to a new research.                                       ___________ 3) Li Yang, founder of Crazy English, criticized Dong Yuhui’s many grammatical errors in his speech, which generated a heated discussion.                                 ____________ generation product production productivity productive cause/ leade to/ contribute to/ result in/ bring about 产生 生成 引发 8. be far from... 距......远     根据例句，写出划线部分含义 1) The city is far from the mountain.                                _____________ 2) His work is far from satisfactory.                                _____________ 【拓展阅读】 While there’s probably no faultless(完美的) way for humans-eating, we know that dieting for weight loss is far from a recommended way to stay healthy for most adults. That goes double for children when they’re pressured into dieting. Q：How does the author find dieting for weight loss？   A. It is recommended to lose weight by dieting.   B. It has more impacts on kids than adults.   C. It has the risks of making kids feel pressured.   D. It is understandable to stay healthy. 距......远 远远不/完全不.... 9. devote vt.把……献(给);把……专用于;专心于→__________adj.全心全意的;忠诚的→    _________ n.奉献;关爱 近义词：commit vt.承诺；忠于....→__________adj. 忠诚的，坚定的;→__________ n.承诺 根据例句，总结devote用法 1) Indeed,his slim but strong body is just like that of millions of Chinese farmers, to whom he has devoted his life.(教材原句)   将......奉献给..... ___________________________ 2) Professor Yang was deeply devoted to his homeland, making remarkable contributions to China's scientific and educational developments.   致力于....../忠诚于....._____________________   devoted devotion committed commitment devote ... to.. be devoted to... Doctors are devoted to developing new treatments, fighting against diseases and saving lives. Firefighters devote themselves to putting out fires and protecting people’s lives and property. Astronauts devote their lives and energy to promoting the development of aerospace. Cleaners devote themselves to making our cities a better place to live in. What do the following people devote themselves to? 10. convince v.使相信, 说服→__________adj.令人信服的→__________adj.坚信的   近义词：persuade  vt.说服→_____________ adj.有说服力的→____________ n.说服；劝说           believe vt.相信→__________ n.信仰；信念→_____________adj.不可思议的 根据例句，总结convince用法 1) Donald Trump claimed Wednesday that he had apparently convinced the Coca-Cola company to switch to using sugar cane in its US drinks.   说服某人做某事___________________  近义表达：________________________ 2) He tried to convince me of his words, but I still doubted his honesty.   使某人相信某事_____________________________    3) I am convinced that your proposal will generate strong results.   句型：某人坚信____________________ 近义句型：_______________________   拓展：动+sb. of sth. 结构：   _______ sb. of sth. 警告某人某事         ________sb. of sth. 提醒某人某事 _______sb. of sth. 治愈某人某病          ________sb. of sth. 抢某人某物 convincing convinced persuasive persuasion belief unbelievable convince sb. to do sth. persuade sb. to do sth. convince sb. of sth. sb. be convinced that... sb. hold a strong belief that... warn remind cure rob 11. estimate vt./n.估计，预测→___________ adj. 预估的   近义词：evaluate  v.估计；评估 →___________ n. 估计；评估           assess  v.评估, 估价→___________ n. 评估, 鉴定, 评定 根据例句，总结estimate用法 1) Three national treasures were broken in National Palace Museum in Taipei, which are estimated at 560 million yuan. It is estimated that the vase was produced in Tang dynasty.   估算某物价值为_____________________   it is estimated that..._____________ 2) Money spent on this World Cup by Qatar was estimated to reach 200 billion dollars, roughly five times the total amount of the previous World Cups.   (数量/价格等)预计达到___________________________ estimated evaluation assessment estimate sth. at... 据估计....... be estimated to reach... 【拓展】(2023全国高考阅读D篇) On March 7, 1907, the English statistician Francis Galton published a paper which illustrated what has come to be known as the “wisdom of crowds” effect. The experiment of estimation he conducted showed that in some cases, the average of a large number of independent estimates could be quite accurate. This effect capitalizes on the fact that when people make errors, those errors aren’t always the same. Some people will tend to overestimate, and some to underestimate. When enough of these errors are averaged together, they cancel each other out, resulting in a more accurate estimate. If people are similar and tend to make the same errors, then their errors won’t cancel each other out. In more technical terms, the wisdom of crowds requires that people’s estimates be independent. If for whatever reasons, people’s errors become correlated or dependent, the accuracy of the estimate will go down. Q: What can we infer from the two paragraphs?   A. More accuracy requires independent estimates.   B. The same mistakes can cancel each other.   C. Different people make different errors.   D. “Wisdom of crowds” effect relies on people’s errors.     12. comprise  v.包括, 构成，组成 The team comprises engineers and designers. =The team is comprised of engineers and designers. 总结：由......组成__________________________ 近义表达：______________________________ A comprise B= A be comprised of B A make up B ....组成 = B be made up of A ....由.....组成 be composed of ....由......组成 These are the first small flames that became seven soaring infernos. The Wang Kuk Court (宏福苑) apartment complex is here, about ________ kilometers from the city’s business district. The complex ___________eight blocks, almost __________apartments in total with _____________ residents to date At 2:51pm local time on Wednesday 26th of November. The first signs of a fire were noticed here. Passers-by filmed this footage of what appears to be the burning green netting around the scaffolding(脚手架) on the first floor of Wang Kuk House. Minutes later at 2:57 pm, the fire had spread to the fourth floor of the same building and it wasn’t_______________ the flames engulfed(吞没) an _________ corner of the building. 25 is made up of 4600 2000 entire long before 13. shortage  n.不足，缺少，短缺→___________ adj.短的;短暂的, 矮的, 短缺的→___________ vt.缩短   近义词：__________  vt./n. 缺乏   反义词：__________________ 足够；充足 根据例句，总结short/shortage 用法 1) The U.S. currently faces a shortage of 80,000 truckers, an astonishing figure that the organization expects to double by 2030.   缺乏..... a/the shortage_______   替换表达：a/the lack______ 2) Since AI-student interactions fall short of the educational value provided by real-life human interactions, it still presents problems for students and teachers.   缺乏/达不到....___________________ short shorten lack enough/ sufficient of of fall/be short of... a shortage of food a shortage of money 14. alternative  n.可供选择的事物; adj.替代的       近义词: choose  vt.选择 →________________ 过去式/过去分词→___________n.选择          opt  v.选择→___________n.选择→___________adj.可选择          select vt.挑选→___________n.挑选→___________adj. 精心选择的 根据例句，总结用法 1)  Scientists believe clean energy is an alternative to fossil fuels.    用法：某物的替代品:   ____________________ 2)  Realizing mom knew what happened, he had no alternative but to admit his mistake.    用法：别无选择只好做某事_______________________________________   chose/chosen choice option optional selection selective be an alternative to... have no alternative(choice/option) but to do sth... 15. tackle vt.着手处理 阅读下列句子，标出tackle的近义表达 1) The report addresses the key issues affecting the environment in this area. 2) After months of negotiation, the two companies finally settled the trade dispute(争端). 3) He managed to cope with the difficulties on his own. 4) With her experience, she knows how to handle unexpected challenges and adapt quickly.     综合练习 1. devote ________(devote) to ridding the whole world of hunger, Yuan Longping, this________(devote) agricultural scientist, had devoted __________(him) to the research on high-yield hybrid rice(杂交水稻). Thanks to his achievements, the problem of lacking enough food could ___________(tackle) so successfully. It was he that_________(overcome) technological barriers and set a new record for the output of rice.By no means will all of us forget his _________(devote) to the fight against hunger.   2. convince A post titled ‘What good _____________(characteristic) should a good celebrity possess (拥有)?’ has gone viral online. Some netizens believe basic abilities, such as ___________(convince) acting skills  that can convince the audience ______ the role he plays, are needed. That’s to say, an actor should be capable of making his viewers __________(convince) of his performances. In addition ______those, good qualities like honesty, responsibility, dedication, and being law-abiding(守法的) are also considered. All of them _____________(convince) that only with those qualities can one be a qualified celebrity. Devoted devoted himself be tackled overcame devotion characteristics convincing of convinced to are convinced 3. alternative Life is about making different_________(choose). But the _________(real) is that sometimes we are given only one_________(opt) and we have no alternative but _________(accept) it. ______instance, when a big fire occurs, there is only one thing on firefighters’ minds. That’s to put it out and save lives. They can’t choose _________(step) back or stand by.___________(alternative), they should face up to the challenge.   4. short Water_________(short) has been a big problem for people in inland (内陆的) areas of China due to being far _______ major rivers, lakes or seas and being short_____ rainfall all year round.   choices reality option to accept For to step Alternatively shortage from of 5. estimate Experts have estimated the total cost of this grand project ________ 500 billion yuan and after it is ________(entire) completed, an _________ (estimate) 50 billion cubic meters （立方米）of water will be transferred(输送). It __________ (estimate) that it has benefited about 430 million people across the country.   6. consume/generate/comprise Chinese people show great preference for instant noodles with nearly 40 billion bags __________(consume) every year in China, and one of the noodle brands a large number of ___________(consume) buy is Master Kong Old Altar Pickled Beef Noodle, also________(name) Lao tan suan cai in Chinese.However, it turned out ______Lao tan suan cai made its pickled cabbages in a dirty pit(坑) with staff stepping on them barefoot and its products were comprised________too many harmful _________(chemical). When disclosed, this phenomenon was a hit on social media, ____________(generate) widespread attention and criticism.  at entirely estimated is estimated consumed consumers named that of chemicals generating 句子表达——根据提示，运用本单元的词汇、短语及句式或使用词汇的正确形式完成下面的语篇 1.我很荣幸能够在这做一个关于食物浪费的演讲，旨在提高(boost)大家节约粮食的意识。 2.首先，据估计(estimate)，全球生产的粮食中有三分之一以上被浪费。 3.此外，这一普遍的现象不仅导致了环境污染，而且引发了严重的食物短缺。 4.尽管我们做了许多努力，但是其结果依然不如人意(be far from...)。 5.因此，我想利用这个机会再次呼吁大家养成节约粮食的好习惯。 6.我坚信(convince)，每个人都投身(devote)到这项运动中，这个问题定能得到解决。 1.我很荣幸能够在这做一个关于食物浪费的演讲，旨在提高(boost)大家节约粮食的意识。 2.首先，据估计(estimate)，全球生产的粮食中有三分之一以上被浪费。 3.此外，这一普遍的现象不仅导致了环境污染，而且引发了严重的食物短缺。 It is my great honour to deliver a speech concerning food waste here, aimed to boost everyone’s awareness of saving food. First of all, it is estimated that over one third of food produced globally is wasted. Moreover, this widespread phenomenon has not only led to environmental pollution but also resulted in serious food shortages. 4.尽管我们做了许多努力，但是其结果依然不如人意(be far from...)。 5.因此，我想利用这个机会再次呼吁大家养成节约粮食的好习惯。 6.我坚信(convince)，每个人都投身(devote)到这项运动中，这个问题定能得到解决。 Despite great efforts we have made, the results are still far from satisfactory. Therefore, I would like to take this opportunity to once again call on everyone to develop the good habit of saving food. I am convinced that only when everyone devotes themselves to this movement can this problem surely be tackled. 连句成篇 It is my great honour to deliver a speech concerning food waste here, aimed to boost everyone’s awareness of saving food. First of all, it is estimated that over one third of food produced globally is wasted.Moreover, this widespread phenomenon has not only led to environmental pollution but also resulted in serious food shortages.Despite great efforts we have made, the results are still far from satisfactory.Therefore, I would like to take this opportunity to once again call on everyone to develop the good habit of saving food. I am convinced that only when everyone devotes themselves to this movement can this problem surely be tackled. Thank You $