Unit 5 Revealing the nature Undersdanding ideas 课件-2024-2025学年高中英语外研版（2019）选择性必修第一册

Unit 5 Revealing nature 1 FREE TALK What animals are you interested in? Group work. Discuss the animals you are interested in. What do you think the title “Revealing nature”means? reveal: to make known something that was reviously secret or unknown. nature n. 自然，自然界 n. 本质；特性 Look at the page from a science magazine and answer the questions. 1 What do you know about these animals?What makes them special? 2 What other similar animals do you know about? Share your knowledge with the class. They are all species that exist thousands of years on earth. They are old and rare (unusual). The Komodo dragon 科莫多巨蜥 The Komodo dragon is the largest lizard in the world. It can grow to three metres in length and can weigh about 135 kilograms. Despite its size and weight, it can run for short distances at up to 20 kilometres per hour. The Duck-billed platypus 鸭嘴兽 The duck-billed platypus is a small egg-laying mammal(up to 60 cm in length)found only in Eastern Australia including Tasmania. As its name suggests, it has a mouth that looks like a duck's bill, while its thick fur and flat tail are similar to those of a beaver. Nautilus 鹦鹉螺 As one of the oldest sea animals in the world, the nautilus has hardly changed in about 500million years, and that is why it is often given the name “living fossil”. Watch the video and answer the questions. 1 How can seeds travel? How can this benefit plants? 2 Can you think of another example of seeds travelling? Share it with the class. Seeds usually are carried by the wind, water, and animals. Plants can have a better chance at life. 1 What species do you recognise in the picture? 2 What factors can cause the process of evolution? Look at the evolutionary tree and answer the questions. Paramecium, earthworm, snail, crab, fish, tortoise, bird, horse, human, frog, alga, moss, fern... evolutionary tree Read the passage and talk about your understanding of the title. Predict the main idea of the text according to the picture and the title. A Journey of Discovery Charles Robert Darwin Feb 12th, 1809—Apr 19th, 1882 Charles Darwin and his Theory of Evolution Charles Darwin (1809-1882) was an English geologist and naturalist. In his famous book On the Origin ofSpecies, Darwin proposed the theory that organisms (individual life forms) evolve extremely slowly. He stated that the organisms that were better suited to their environments would survive and pass on their favourable characteristics to the next generation, while the less suitable organisms would gradually die out. He called this process “natural selection”. Vocabulary 1. benefit beneficial benefit benefit from/by be of benefit (to sb.) get/gain/derivea benefit (from sth.) for one's benefit= for the benefit of sb. be beneficial to 练习：Students will gain a benefit ______ the new teaching method. from adj. 有利的，有帮助的，有用的 sb./sth. 对……有益 得益于……，从……中受益 (对某人)有益 (从某事物)得到好处 为了某人的利益 对……有益(= be of benefit to = benefit ) 13 Vocabulary 2. distant be distant from a distant look a distant relative in the distance at/from a distance keep one's distance at a distance of 练习：Those stars are distant ______ our galaxy. from 离……很远；与……不同，与……关系不密切 心不在焉的神情 远房亲戚 在远处(距离很远) 从远处，离一段距离(不是很远) 保持距离 隔……远的距离 14 Vocabulary 3. disgrace disgraceful disgracefully disgrace oneself be (publicly) disgraced It's disgraceful that... There is no disgrace in doing sth. 练习：He _____________ (disgrace) his family's name in the last few years. has disgraced adj. 不光彩的；可耻的；丢脸的 adv. 可耻地 丢脸 被(当众)羞辱 ……太不像话了 做某事不丢脸 15 Vocabulary 4. suspect suspicion suspicious suspect that... suspect sb.to be... suspect sb. of (doing) sth. a murder suspect be under suspicion on suspicion of n. 怀疑；嫌疑 adj. 怀疑的；可疑的；不信任的 怀疑…… 怀疑某人是…… 怀疑某人(做)某事 杀人嫌疑犯 受到怀疑 因涉嫌…… 16 Vocabulary 4. suspect be/become suspicious about/of sb./sth a suspicious look be suspicious of sb./sth. 练习：The two officials _____________ (suspect) of having taken bribes. are suspected 怀疑某人/某事 怀疑的神情 不信任某人/某事 17 Vocabulary 5. be regarded as... be highly regarded hold sb. in high regard show little/no regard for... in this/that regard with/in regard to sth. as regards sth. 练习：Teachers were held _________ low regard in that society. 得到高度评价 非常尊敬某人 对……关注很少/不关注 在这方面，关于此事(指与前文提到的内容有关) 关于某事；对于某事 关于/至于某事 in 18 Vocabulary 练习：Many businesses started up by college students have taken ________. 6. date back to date back to/date from +具体时间 date back + 一段时间 out of date set/fix a date for... up to date to date have a date with sb. from 过时的；过期的 确定……的日期 现代的，最新的 迄今为止，到目前为止 与某人有约会 19 Vocabulary 练习：He is, _______________ (毫无疑问), the best man for the job. 7. in question beyond question without question out of question out of the question ask/answer a question a question on without question 不容怀疑 毫无疑问；毫无异议地 没问题 不可能；不允许 提出/回答问题 有关……的题目 20 Vocabulary 练习：Hundreds of people crowded _________ the church for the wedding. 8. be crowded with crowd into crowd around/round crowd...out crowd in (on sb.) the crowd crowds of... into 涌入…… 挤在……周围 把……挤出，排挤 (问题或想法)涌上心头，涌入脑海 大众，百姓 成群的…… 21 Choose the main idea of the passage and give your reasons. 1. Darwin’s interest in various living things made him a great naturalist. 2. Darwin’s journey on the Beagle inspired his Theory of Evolution. 3. Darwin went on a journey to confirm his theory that humans had evolved over time. Read the passage quickly and finish the following exercises. ① Part 1 (Paras.1~2) ___________________ ② Part 2 (Paras.3~5) ___________________ ③ Part 3 (Para.6) ______________________ ④ Part 4 (Para.7) ______________________ A. The remark about On the Origin of Species. B. Darwin's new theory about evolution. C. The new discoveries during the journey. D. Darwin answered the call and began his journey. Match the parts with the main ideas. D B C A (2) Choose the best answers. ① Why didn't the captain of the Beagle think Darwin was the best choice? A. Because Darwin wasn't admitted to a university. B. Because Darwin was dismissed from medical school. C. Because Darwin brought shame to himself and his family. D. Because Darwin had not enough interest in visiting distant countries. 24 (2) Choose the best answers. ② What did people think about the species at that time? A. All species evolved from the same species. B. All species came into being in the meantime. C. Some species appeared earlier than the others D. Some species improved a lot since its appearance. 25 ③ What was Darwin's new theory then? A. Environment played an important role. B. Species evolved with the changing environment. C. Different species lived in different environment. D. The more complicated the species were, the more time it took. ④How did people feel Darwin's theory? A. Astonished. B. Excited. C. Satisfied. D. Interested. 26 Organise information from the passage and complete the diagram. ① ON HIS JOURNEY various living things in their natural environments and samples of the plants and animals he had collected; ② GENERATE IDEAS come to exist; Maybe animals evolved as they adapted to their changing environments? ③ BLOOK FORMORE EVIDENCE that there was a difference between the finches on each of the islands; had evolved according to what food was available on that particular island ④ ADEVELOPIDEAS had evolved from a common ancestor, which had arrived on the islands a long time before; slowly evolved into many new species ⑤ PROPOSE A THEORYR had evolved from lower forms of life wanted a crew member Charles Darwin's journey saw a variety of new species a theory of evolution On the Origin of Species A Journey of Discovery A _________ ancestor __________ into different species common evolve 29 After Darwin had spent some time in South America, his room on the ship was crowded with samples of the plants and animals he had collected. 主从复合句 after引导的时间状语从句中使用了过去完成时 had spent，表示动作发生在主谓语 was crowded with表示的动作之前; he had collected 是省略了关系代词 that/which 的定语从句对先行 the plants and animals 加以修饰和限制，因关系代词在定语从句中作宾语，故可省略。 Darwin suspected that the finches had evolved from a common ancestor, which had arrived on the islands a long time before. 主从复合句 that引导的宾语从句作 suspected 的宾语，其中使用了过去完成时 had evolved，表示动作发生在suspected之前，为过去的过去；宾语从句中 which had arrived on the islands...是 which引导的非限制性定语从句，对ancestor进行补充说明。 Why were many people “shocked” by Darwin’s theory? What kind of person was Darwin according to the passage? Think & share At that time, people believed that all species had appeared on Earth at the same time and had not changed since, but Darwin’s theory proposed that living things, including humans, had evolved from lower forms of life, which, as a result, shocked many people. Darwin was a determined man. He had strong curiosity and interest in science and was good at thinking and making discoveries. How do you think the human species will evolve in the future? What have you learnt about the spirit of scientific exploration? How can this spirit help you in your life and studies? Think & share Exercise 1．The coldness and ________ in her voice took me ________ surprise. A．distance；by B．distant；in C．distant；on D．distance，in 2．A new device works like a solar panel, except that it doesn’t ______ energy from the sun. A．consume B．harvest C．conserve D．generate 3．Battling his weight since childhood, Smith showed off his new slim look on Instagram and owed the ________ weight loss to a gluten-free diet that consists of high-quality proteins. A．tempting B．dramatic C．distant D．harsh 34 Exercise 4．It is reported that the ____________ winds last night buried the whole village in sand. A．gentle B．distant C．violent D．slight 5．Her enthusiasm and________to the students over the past seven years has brought the school to the leading position in many areas. A．judgement B．commitment C．competition D．evolution 6．I never feel safe with Richard ______. A．answering the call B．behind the wheel C．paving the way D．throwing in the towe 35 Exercise 7．We hope that the science fair will ________ enthusiasm about science and math. A．stream B．cooperate C．generate D．applaud 8．Many people refused to believe that living things, including humans, _______ from lower forms of life. A．had evolved B．generated C．had generated D．evolved 9．It’s a pity that her suggestion met with ________. A．rejection B．expectation C．evolution D．cooperation 10．Extreme temperatures _______ the growth of many economic crops such as tea and oranges. A．inspired B．threatened C．attacked D．generated 36 Review the language points and complete the exercises. Homework See you next class! 38 Lavf56.40.101 Tencent APD MTS $$