Unit 5 Revealing Nature Starting out 课件-2023-2024学年高二英语外研版（2019）选择性必修第一册

外研 选择性必修 第一册 Words and Expressions encounter researcher evolve spread scientist judge fossil relatively date back to v. 不期而遇；遭遇 n. 研究者 v. 发展；进化 v. 传播；散布；展开 n. 科学家 v. 审判；评判；判断 n. 化石 adv. 相对地 追溯到、起源于 Look at these pictures and fill in the blanks with the correct form of the following words. evolve researcher spread scientist fossil Zhong Nanshan is a completely serious s , who devotes himself to medical career. researcher Doctors discovered that the novel coronavirus can be   among people. evolve researcher spread scientist fossil spread The inventor was Zhang Heng , a famous in the Eastern Han Dynasty. evolve researcher spread scientist fossil scientist Darvin believed that we from apes. evolve researcher spread scientist fossil evolved Wind power is a non-polluting alternative to fuels. evolve researcher spread scientist fossil fossil The researchers said the ancestor of the Komodo dragon most likely evolved in Australia and spread westward, reaching the Indonesian island of Flores 900,000 years ago. 本句是一个主从复合句，said后是一个宾语从句，省略了引导词that。reaching是现在分词作状语，表示结果。 The first scientists to examine a preserved platypus body judged it a fake in the late 18th century. 名词前面有序数词、最高级修饰时，后置定语一般用to do。 eg：She is the first woman to set foot on the moon. date back to：追溯到；从...开始。 相当于date from 没有被动，常用于一般现在时。 eg：He explains these pipes date back to as early as 1990. seed n. 种子，籽 Words and expressions Read after the tape and speak out the Chinese immediately. What do you expect from the title? How much do you know about nature? Unit 5 Revealing nature to make known something that was previously secret or unknown 揭示 ① all the plants, animals and things that exist in the universe that are not made by people 自然界；大自然 ② the basic qualities of a thing 本质；基本性质 P1 Starting out Discover nature, explore nature, and grasp the essence of nature. 发现自然，探索自然，掌握自然的本质。 Look at the page from a science magazine and answer the questions. What do you know about these animals? What makes them special? P65 1 The Komodo dragon (科莫多龙) The Komodo dragon is the largest living lizard(蜥蜴) 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. Check your answers! The Duck-billed platypus is a small egg-laying mammal【哺乳动物】 (up to 60 cm in length) found only in Eastern Australia including Tasmania(塔斯马尼亚岛). 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(海狸). The Duck-billed platypus (鸭嘴兽) As one of the oldest sea animals in the world, the nautilus has hardly changed in about 500 million years, and that is why it is often given the name “living fossil (活化石)”. Nautilus (鹦鹉螺) Which animal gives you the deepest impression? Why? What other similar animals do you know about? Share your knowledge with the class. Thorny dragon (澳洲魔蜥) ＊The amazing Thorny Dragon is a species of lizard(蜥蜴) endemic(特有的) to a harsh, arid habitat(恶劣艰苦的栖息地). It also goes by several other common names, including the Thorny Devil. ＊Noted biologist John Edward Gray became the first scientist to describe the animal, in 1841. Possible answer ＊Wolffish, any of five species of large long-bodied fishes of the family Anarhichadidae (狼鳚科), found in northern Atlantic and Pacific waters. ＊The largest species may grow to a length of about 2.3 metres (7.5 feet). Wolffish(狼鱼) Nature is so amazing! What other amazing things do you know about nature? Let's continue to explore it. Watch and say How can seeds travel? How can this benefit plants? Now let's watch a video and answer the question. P65 2 Seeds usually are carried by the wind, water, and animals. Plants can have a better chance at life. e.g. Hitchhikers(搭便车旅行的人) - Have you ever gotten home from a field trip and found your socks covered with sticky or prickly seeds? These seeds are now in a new place because you carried them. Animal fur and feathers are also good places to stick to and catch a ride. Can you think of another example of seeds travelling? Share it with the class. We live in a wonderful world that is full of beauty. Charm and adventure. There is no end of the adventures we can have if only we seek them with open eyes. 1. Can you describe an unusual animal in front of the class? Why is it different from common ones? 2. How can seeds travel? Can you list some examples of seeds travelling? Self-evaluation 1. Polish your language and organize your favorite animals into an article. 2. Preview the A Journey of Discovery on pages 66-68. Lavf58.12.100 $$