Unit 5 Period One Starting out & Understanding ideas(PPT课件)-【满分思维】2026-2027学年高中英语选择性必修第一册配套课件（外研版）

Period One Starting out & Understanding ideas 1 It was a village in India. The people were poor. However, they were happy. After all, their forefathers had lived in the same way for centuries. Then one day, some visitors from the city arrived. They told the villagers there were some people elsewhere who liked to eat frog legs. However, they did not have enough frogs of their own, so they wanted to buy frogs from other places. This seemed like money for nothing. There were millions of frogs 主题素养积累 2 in the fields around, and they were no use to the villagers. All they had to do was catch them. An agreement was reached, and the children were sent into the fields to catch frogs. Every week a truck arrived to collect the frogs and hand over the money. For the first time, the people were able to dream of a better future. But the dream didn’t last long. The change was hardly noticed at first, but it seemed as if the crops were not doing so well. More worrying was that the children fell ill more often, and that there seemed to be more insects around lately. 主题素养积累 The villagers decided that they couldn’t just wait to see the crops failing and the children getting weak. They would have to use the money earned to buy pesticides and medicines. Soon there was no money left. Then the people realized what was happening. It was the frogs. They hadn’t been useless. They had been doing an important job—eating insects. Now with so many frogs killed, the insects were increasing more rapidly. They were damaging the crops and spreading diseases. 主题素养积累 Now, the people are still poor. But in the evenings they sit in the village square and listen to sounds of insects and frogs. These sounds of the night now have a much deeper meaning. 主题素养积累 5 【主题词句背诵】 1.forefather n. 祖先,祖宗 2.money for nothing 不劳而获的钱 3.hand over 移交,交出 4.dream of 梦想 5.fall ill 生病 主题素养积累 6 6.They told the villagers there were some people elsewhere who liked to eat frog legs. (定语从句) 他们告诉村民其他地方有一些人喜欢吃蛙腿。 7.Now with so many frogs killed, the insects were increasing more rapidly. (with复合结构) 现在,这么多的青蛙被杀死了,昆虫增长的速度更快了。 主题素养积累 7 单元知识概览 核心单词 seed, distant, adapt, sample, evolve, suspect, ancestor, evolution, generate, characteristic, decline, blame, goat, primitive, worldwide, legend, detect, root, link, prevent 核心短语 answer the call, be native to 重点句型 1.so…that引导的结果状语从句 　2.Sb is said to do/have done sth. 单元语法 过去完成时 单元写作 1.写观察日记 　2.单元话题续写——自然的奥秘 主题素养积累 8 课前自主探究 语言知识梳理 课后习题 9 Task 1: Fast Reading similarities generated/ had the idea evidence new species theory of evolution 课前自主探究 10 Task 2: Careful Reading ( )1.What can we know from the first paragraph? A.The captain of the Beagle wanted to make some scientific discoveries. B.The captain invited Charles Darwin to join him. C.Darwin didn’t obtain his degree in his medical school. D.Darwin’s father encouraged him to explore more. √ 课前自主探究 11 ( )2.What interested Darwin the most on the Galpagos Islands? A.Samples of the plants and animals. B.A variety of new species. C.Natural environments. D.The birds. √ 课前自主探究 12 ( )3.Why were people shocked by Darwin’s theory immediately it got published? A.Darwin was a young man without a degree. B.They believed that all species had appeared on Earth at the same time. C.Darwin discovered a variety of new species. D.They couldn’t accept that humans might have evolved from lower forms of life. √ 课前自主探究 13 Task 3: Micro-writing In 1831, Charles Darwin joined the Beagle for a trip around the world. The journey gave him the chance to study 1.__________________ (vary) living things in their 2.__________ (nature) environments. He noticed that some species of animals were very similar 3.______ each other. The idea 4.__________ animals may have evolved as they adapted to their changing environments inspired Darwin to seek more evidence.   various/varied natural to that 课前自主探究 14 When the Beagle reached the Galpágos Islands in 1835, Darwin saw 5._______ variety of new species, but it 6.__________(be) the birds that interested him the most. Darwin noticed that there was a difference between the finches on each of the islands. He suspected that the finches 7._______________(evolve) from a common ancestor. It was a completely new idea—a theory of evolution. Darwin explained this theory in his book, On the Origin of Species, which 8.__________________(immediate) caused a storm after being published. a was had evolved immediately 课前自主探究 15 Many people refused to believe his theory. But Darwin’s scientific studies were so 9._________________(convince) that more and more people started to believe his theory.   Today, On the Origin of Species is regarded as one of the most important works ever 10.____________(write). convincing written 课前自主探究 1. distant　adj.遥远的;久远的;不友好的,冷淡的,疏远的;远亲的,远房的;心不在焉的,恍惚的,出神的 (教材P66) The captain of the ship, the Beagle, wanted someone who would “profit by the opportunity of visiting distant countries yet little known”. “贝格尔号”的船长想招募一名船员,这名船员将能“借此机会访问遥远而鲜为人知的国度并从中受益”。 语言知识梳理 17 (1)be distant from 　　 不同于…… (2)distance n. 距离;远方;遥远;疏远 v. 拉开距离;与……疏远 from/at a distance 离一段距离;从远处 at a distance of… 在……远的地方;相隔…… keep sb at a distance=keep one’s distance from sb 对某人冷淡;与某人疏远 in the distance 在远处 distance oneself from 使疏远……;使不介入…… 语言知识梳理 18 【活学活用】 (1)单句填空 [上外版必修一U3] Rome is one of the most ancient cities in the world and is full of wonderful relics from its ____________(distance) past. distant 语言知识梳理 19 (2)写作金句 ①The new neighbour ________________________________________________ __________________________, and she never waved back when others greeted her, her face showing no obvious expression.  这位新邻居和每个人都疏远,别人和她打招呼时,她从不挥手回应,脸上也没什么明显表情。(读后续写之人物描写) ②The sound of laughter ___________________ lifted her spirits, making her forget her troubles for a moment. 远处传来的笑声让她精神为之一振,暂时忘却了烦恼。(读后续写之心理活动描写) kept everyone at a distance/kept her in the distance distance from everyone 语言知识梳理 20 2. adapt　vi.适应 vt.使适应;使适合;改编 (教材P67)Maybe animals evolved as they adapted to their changing environments? 也许动物在适应变化的环境时发生了进化? (1)adapt oneself to (doing) sth 使自己适应(做)某事(to为介词) (2)adapt…from… 根据……改写/改编…… adapt…for… 改(编)……为……所用 (3)adaptation n. 适应;改编本,改写本 (4)adaptable adj. 能适应的;适应性强的 语言知识梳理 21 【活学活用】 (1)单句填空 ①An ______________(adapt) person is one who can easily change their behaviour or attitude in response to different situations.   ②[人教版选必二U2] Although some foreign students live in campus accommodation, Xie Lei chose to live with a host family, who can help with her ________________(adapt) to the new culture. ③It took me a few weeks to adapt to ______________(wake) up early for my new job, but now it’s a habit.    adaptable adaptation waking 语言知识梳理 22 (2)写作金句 ①Elizabeth had always been clever, but it was _______________________ ____________________________ that truly set her apart.   伊丽莎白一直都很聪明,但真正让她与众不同的是她适应不同社交场合的能力。(读后续写之人物描写) ②I was wondering if you could help me revise _______________________ _________________________The Old Man and the Sea. (非谓语作定语)   我想知道你能不能帮我修改一个改编自经典小说《老人与海》的短剧。(应用文写作之求助信) her ability to adapt to a short play adapted different social situations from the classic novel 语言知识梳理 23 (教材P68)But Darwin’s scientific studies were so convincing that more and more people started to believe his theory. 然而,达尔文的科学研究很有说服力,以至于越来越多的人开始相信他的理论。 句型公式 so…that引导的结果状语从句 语言知识梳理 24 【归纳拓展】 so/such…that…(如此……以至于……)都可用来引导结果状语从句,常构成如下结构: ［温馨提示］ ①so+adj.+a/an+n.+that…=such+a/an+adj.+n.+that…; ②为强调so…that…句型中的形容词或副词,可以把so放在句首,主句用部分倒装结构。 语言知识梳理 25 【活学活用】 写作金句 ①He heard ___________________________________________________________ that his heart began to race.   他听到一种非常可怕的声音,以至于他的心开始狂跳。(读后续写之情感描写) so frightening a sound/such a frightening sound 语言知识梳理 26 ②The concert was ___________________________________________________ ______________ for a long time.   音乐会太精彩了,以至于每个人都站起来长时间鼓掌。(读后续写之场景描写) so amazing that everyone stood up and applauded 语言知识梳理 27 课 后 习 题 28 Ⅰ 单词拼写(每小题1分，满分4分) 1.I ______________(怀疑) that she was hiding something important when she avoided my eyes.  2.Blood _____________(样本) were sent to the laboratory for analysis and research. suspected samples 1 2 3 4 课 后 习 题 29 3.After learning about the Chinese writing system, I feel proud of the wisdom of our a__________.  4.The educational programme emphasizes hands-on learning and creative thinking to g__________ a passion for innovation and problem-solving among students. ncestors enerate 1 2 3 4 课 后 习 题 30 Ⅱ 单句填空(每小题1.5分，满分12分) 1.The teacher assigned a ____________(science) research project to the class, requiring them to present their findings in a detailed report.  2.Despite a long _____________(distant) she had to travel, Maria was determined to be there for her sister’s surgery.  3.The recycling method helps save our precious ____________(nature) resources and protect our environment. scientific distance natural 1 2 3 4 5 6 7 8 课 后 习 题 31 4.He made a ___________(choose) to follow in his father’s footsteps and pursue a career in medicine.  5.The ______________(evolve) of mobile phones from bulky (笨重的) devices to slim smart gadgets has changed people’s daily lives greatly.  6.The politician’s ________________(convince) speech was filled with memorable quotes that motivated the crowd and left them feeling hopeful for the future.  choice evolution convincing 1 2 3 4 5 6 7 8 课 后 习 题 32 7.When she was young, she _________________(fascinate) by the charm of the clowns and their ability to bring joy to others.  8.In the wild, animals must be _______________(adapt) to survive the changing seasons and environments.  was fascinated adaptable 1 2 3 4 5 6 7 8 课 后 习 题 33 Ⅲ 短语填空(每小题2分，满分10分) 1.And if you happen to know the English expression ______________(讨论中的), translation will become easy.  2.When duty called, the brave warrior was always ready to ____________________(响应号召) and defend his people.  3.There are lessons in these folk tales that all children can　　　　　　　　 _________________________(从中受益).  in question answer the call profit by/benefit from 1 2 3 4 5 课 后 习 题 34 4.The young man drove me to a huge building and led me into a spacious room, which ______________________(挤满了) elderly people like me.  5.There was a time when my study suffered greatly because of my inability to ______________(适应) the new school life quickly.  was crowded with adapt to 1 2 3 4 5 课 后 习 题 35 Ⅳ 句型训练(每小题3分，满分9分) 1._______________________________________ that I was absolutely delighted with.(强调句) 正是我们队获胜的消息让我非常高兴。 2._________________ if we had planted the seed earlier, it would have had a better chance of growing into a strong plant.(形式主语)  似乎如果我们早点种下那颗种子,它就会有更大的机会长成一株强壮的植物。 3.The fog was ________________ they couldn’t even see the end of the boat.(结果状语从句) 雾太浓了,他们甚至看不到船尾。  It was the news of our team’s victory It seemed that so thick that 1 2 3 课 后 习 题 36 Ⅴ 阅读理解(每小题2.5分，满分10分) Soon after Mr & Mrs Bacchus started farming their little patch of land, they faced a major problem—a plague of birds fed on their precious crops. Then, a man stopped on the road outside their house, and asked the couple if he could take photographs of the birds on the property. Afterwards, he suggested that instead of trying to get rid of the birds, they should instead learn to live alongside them, and Maraksacha Reserve was born. 1 2 3 4 课 后 习 题 37 Today, the couple credit this man, the celebrated bird photographer Manu Espinosa, with changing their lives, and helping them persuade others of the vital importance of conservation in this region. Birding tourism is flourishing in Ecuador, with increasing numbers of specialist tour groups. Ecuador contains a variety of ecosystems at differing elevations, which helps explain why it’s among the top 10 countries in the world for bird diversity. The country is home to over 1,600 bird species—nearly double the 1 2 3 4 课 后 习 题 number found in all of Europe—within an area just slightly larger than the UK. As the business of birding grows, more and more farmers are switching their land from agriculture to bird reserves, benefiting not just the birds, but the country’s economy too. One notable example is the Ajila family, who have devoted themselves to preserving the long-wattled umbrellabird. On his land near Recinto, landowner Luis Ajila has switched from dairy farming to conservation, replanting trees and promoting the site to wildlife tourists—work that he says is 1 2 3 4 课 后 习 题 a better livelihood than farming. “Wildlife tourism is much more profitable than farming, but that wasn’t our only motivation,” says Luis Jr., Ajila’s son. “We aimed to protect not just the umbrellabird, but all the unique wildlife here, safeguarding them for future generations.” Since 2005, Angel Paz has transformed his former dairy farm into a bird reserve. At first, things didn’t go to plan: it took a month for the first visitor to arrive, and he paid just $ 10 for a four-hour tour. 1 2 3 4 课 后 习 题 Since then, however, thousands of people have made the pilgrimage. “I have protected my home and its birdlife for almost two decades, and finally watched the wildlife—and the people who visit—flourish,” Angel Paz says. 【文章大意】本文是一篇记叙文,讲述了一对爱鸟夫妇在摄影师马努・埃斯皮诺萨的建议下,创办了保护区,发展观鸟旅游业,还带动其他农户将农田改造成观鸟地,既推动了当地旅游业发展,又保护了生态 环境。 1 2 3 4 课 后 习 题 ( )1.What advice did the photographer give to the couple? A.Photographing the birds. B.Coexisting with the birds. C.Protecting their precious crops. D.Taking care of their property. [解析] 细节理解题。根据第一段中“Afterwards, he suggested that instead of trying to get rid of the birds, they should instead learn to live alongside them, and Maraksacha Reserve was born.”可知,摄影师建议这对夫妇不要试图赶走鸟类,而是学会与它们共存。故选 B 项。 √ 1 2 3 4 课 后 习 题 42 ( )2.What is Paragraph 3 of the text mainly about? A.How Ecuador is geographically unique. B.What distinguishes Ecuador’s biodiversity. C.What makes Ecuador a birding destination. D.How birding tourism is operated in Ecuador. √ 1 2 3 4 课 后 习 题 43 [解析] 段落大意题。根据第三段“Ecuador contains a variety of ecosystems at differing elevations, which helps explain why it’s among the top 10 countries in the world for bird diversity…within an area just slightly larger than the UK.”可知,该段主要说明厄瓜多尔因多样的生态系统和鸟类多样性而成为观鸟胜地。据此推断,第三段主要讲述是什么让厄瓜多尔成为观鸟目的地。故选 C 项。 1 2 3 4 课 后 习 题 44 ( )3.What have the Ajila family achieved? A.Helping other farmers shake off poverty. B.Combining profitability with sustainability. C.Applying new technology in modern farming. D.Changing the landscapes of their residential areas. √ 1 2 3 4 课 后 习 题 45 [解析] 推理判断题。根据第四段“…Luis Ajila has switched from dairy farming to conservation…work that he says is a better livelihood than farming.”以及第五段“We aimed to protect not just the umbrellabird… safeguarding them for future generations.”可知,Ajila一家从乳品业转向保护鸟类,既获得了更好的生计,又保护了野生动物,据此推断,Ajila一家实现了盈利与可持续发展的结合。故选B项。 1 2 3 4 课 后 习 题 46 ( )4.What can we learn from Angel Paz’s story? A.Well begun is half done. B.It takes time to bear fruit. C.The early bird catches the worm. D.The secret to success is adaptability. √ 1 2 3 4 课 后 习 题 47 [解析] 推理判断题。根据第六段“At first, things didn’t go to plan: it took a month for the first visitor to arrive…Since then, however, thousands of people have made the pilgrimage. ‘I have protected my home…and finally watched the wildlife—and the people who visit—flourish,’…”可知,Angel Paz的事业起初并不顺利,但经过近二十年的坚持,最终取得了成功。这表明成功需要时间才能见效。据此推断,从Angel Paz的故事中我们可以学到 “需要时间才能有成果”。故选 B 项。 1 2 3 4 课 后 习 题 48 Ⅵ 阅读七选五(每小题2.5分，满分12.5分) When gardeners grow varieties of plants in their beautiful gardens, they are happy to see beneficial insects like bees and butterflies surrounding the flowers. But as they take a closer look, they may find some plants are covered in black dots and filled with harmful insects or pests. Some gardeners may immediately reach for chemicals. 1.________ Although it may stop the insect problem, it will also threaten bees and butterflies which help the plants reproduce. A 1 2 3 4 5 课 后 习 题 49 If you are wise gardeners, you should first take preventive measures to control the harmful insects. 2.________ Only when there are too many harmful insects should pest control be considered. The first defence should always be the safest method available.  Prevention As a rule, prevention is the best treatment. Inspect plants closely, including their leaves, before buying them from the store. 3._________ 　　　  G 1 2 3 4 5 F 课 后 习 题 50 When planting, space plants out to permit them to grow to their full size. Plants too close together can breed harmful organisms, like bacteria. 4.________ They invite pests if permitted to remain on the ground. When you do see pests, wash them away. Use rubbing alcohol to remove some insects, or pick them off the plants.  Pesticides If you decide a pesticide is necessary, choose it carefully and follow the directions and warnings on the product. E 1 2 3 4 5 课 后 习 题 51 Avoid using pesticides in extreme heat, on windy days, or when the plants are wet. 5._________ At the time, beneficial insects are inactive. You can consider removing flowers from the plants to lessen the risk that beneficial insects will come in contact with the pesticides. A.But this is not wise. B.In most cases, chemicals don’t help. C.Treat the plants early in the morning or at night. C 1 2 3 4 5 课 后 习 题 52 D.Also do remember the plants need nutrition and care. E.Keep your garden free of fallen leaves, fruits and other wastes. F.Do not bring any plants home that show signs of disease or pests. G.The process starts with the idea that having some pests is acceptable. 【文章大意】 本文是一篇说明文。文章介绍了如何预防害虫和使用农药。 1 2 3 4 5 课 后 习 题 53 1.___ A [解析] 根据上文提示“Some gardeners may immediately reach for chemicals.”以及下文提示“Although it may stop the insect problem, it will also threaten bees and butterflies which help the plants reproduce.”可知,设空处与上文构成转折关系,下文是对空处的进一步解释。所以A项(但这是不明智的。)切题。故选A。 1 2 3 4 5 课 后 习 题 54 2.___ G [解析] 根据下文提示“Only when there are too many harmful insects should pest control be considered.”可知,只有在出现太多的害虫时才考虑除虫。所以G项(这个过程始于一种观点即存在一些害虫是可以接受的。)切题。故选G。 3.___ F [解析] 根据上文提示“As a rule, prevention is the best treatment. Inspect plants closely, including their leaves, before buying them from the store.”可知,有病害或虫害的植物不能带回家。所以F项(不要带任何有病害或虫害迹象的植物回家。)切题。故选F。 1 2 3 4 5 课 后 习 题 55 4.___ E [解析] 根据下文提示“They invite pests if permitted to remain on the ground. When you do see pests, wash them away. Use rubbing alcohol to remove some insects, or pick them off the plants.”可知,要保持花园干净。所以E项(保持你的花园无落叶、落果和其他废弃物。)切题。故选E。 5.___ C [解析] 根据上文提示“Avoid using pesticides in extreme heat, on windy days, or when the plants are wet.”可知,设空处应该是在说使用农药的时间。所以C项(在清晨或晚上照料植物。)切题。故选C。 1 2 3 4 5 课 后 习 题 56 Ⅶ 语法填空(每小题1.5分，满分15分) ［2025·山东临沂高二期中］ A research team led by Guo Songtao, a professor at the Northwest University in China, developed a system with facial recognition and other technologies 1._______________(identify) golden snub-nosed monkeys(川金丝猴), 2.__________ are a protected species living in the Qinling Mountains in Northwest China. Called “Tri-AI”, the system could detect, track and recognize individual animals from videos and images, 3._____________(make) all-time monitoring and   to identify which making 1 2 3 4 5 6 7 8 9 10 课 后 习 题 57 behaviour analysis of animals possible. “In the past few years, machine learning 4.______________________ (apply) to recognize species, but accurate individual recognition is the first step to do in animal behaviour analysis and animal 5.________________(protect),” Guo told Global Times, noting the system enabled researchers to achieve this goal.   has been applied protection 1 2 3 4 5 6 7 8 9 10 课 后 习 题 6._______________(previous), to monitor and track a particular animal, researchers usually used radio collars (无线电项圈) to mark 7._______. But this method often injured the animal or was easy to be disturbed by bad weather, leaving the researchers faced 8._______ the challenge of finding out the one they wanted to track among a group of animals in the wild.   With the facial recognition technology 9.____________(adopt) on animals, it might be much 10.__________(easy) to protect rare animals than 10 years ago. Previously it with adopted easier 1 2 3 4 5 6 7 8 9 10 课 后 习 题 59 【文章大意】这是一篇说明文。文章主要介绍了中国西北大学的郭松涛教授领导的一个研究小组开发了一个利用面部识别和其他技术来识别川金丝猴的系统。 1 2 3 4 5 6 7 8 9 10 课 后 习 题 60 1.___________ to identify [解析] 考查非谓语动词。此处表示目的,应用不定式作目的状语,故填to identify。 2._______ which [解析] 考查定语从句。空处引导非限制性定语从句,修饰先行词golden snub-nosed monkeys,指物,且从句中缺少主语,应用关系代词which来引导,故填which。 1 2 3 4 5 6 7 8 9 10 课 后 习 题 61 3.________ making [解析] 考查非谓语动词。句中有谓语,此处应用非谓语动词作状语,逻辑主语是前面整个句子,和动词make是主动关系,应用现在分词作状语,故填making。 4._________________ has been applied [解析] 考查动词时态、语态和主谓一致。此处在句中作谓语,由in the past few years可知,应用现在完成时,主语machine learning和动词apply是被动关系,应用现在完成时的被动语态,主语是不可数名词,助动词应用has,故填has been applied。 1 2 3 4 5 6 7 8 9 10 课 后 习 题 62 5.___________ protection [解析] 考查名词。设空处应用名词protection作宾语,且其在此处为不可数名词,故填protection。 6.__________ Previously [解析] 考查副词。此处应用副词previously作状语,修饰整个句子,单词位于句首,首字母大写,故填Previously。 7.___ it [解析] 考查代词。此处应用代词it,代指上文提到的a particular animal,作宾语,故填it。 1 2 3 4 5 6 7 8 9 10 课 后 习 题 63 8._____ with [解析] 考查介词。 (be) faced with为固定搭配,意为“面对”,故填with。 9._________ adopted [解析] 考查非谓语动词。此处是with复合结构,即“with+宾语+宾语补足语”,宾语the facial recognition technology和动词adopt是被动关系,应用过去分词作宾语补足语,故填adopted。 1 2 3 4 5 6 7 8 9 10 课 后 习 题 64 10._______ easier [解析] 考查形容词比较级。由than 10 years ago可知,此处表示比10年前更容易,是比较级,应用形容词easy的比较级easier作表语,故填easier。 1 2 3 4 5 6 7 8 9 10 课 后 习 题 65 $