Unit 5 Looking into nature 课件 2025-2026学年外研版八年级英语下册

Unit 5　Looking into nature 第三课时　Developing ideas：Listening & Speaking(P73～P75) 英语　八年级下册 1 Ⅰ 重点单词(☆表示拓展词汇) 名词(n.) 1. 化学物质__________→化学n. ☆chemistry 形容词(adj.) 2. 很热的；滚热的_________　 chemical boiling 英语　八年级下册 2 Ⅱ 重点短语 1. 充满…… 2. 等待做某事 3. ……的开始 4. 唤起某人的好奇心 5. 驱使某人做某事 6. 像……一样热 7. 不可能做某事 8. 对……感到好奇 be full of wait to do sth. the beginning of awaken one's curiosity drive sb. to do sth. as hot as be unlikely to do sth. be curious about 英语　八年级下册 3 Ⅲ 重点句型 1. Nature ____ ______ ____ secrets. 大自然充满了秘密。 2. These secrets ________ _____ ___________ and drive scientists to better understand the wonders around us. 这些秘密唤起了我们的好奇心，并驱使科学家们更好地了解我们周围的奇观。 3. I'm _________ _______ the possible reasons. 我对可能的原因感到好奇。 is full of awaken our curiosity curious about 英语　八年级下册 4 1　There is a boiling river in the Amazon rainforest. (P73改编) 构词法 英语　八年级下册 5 (1)Tina ______(boiling/boils) the water and makes some tea. (2)Be careful of the _________(boil/boiling) soup. boils boiling 英语　八年级下册 6 2　These secrets awaken our curiosity and drive scientists to better understand the wonders around us. (P73) I'm curious about the possible reasons. (P75) 英语　八年级下册 7 Tommy always has a deep ___________ (curious/curiosity) about plants. ( )Sally is curious ________ the universe. A. explore　　　　 B. to explore C. exploring D. explored curiosity B 英语　八年级下册 8 Stress in words(单词重音)(1) 一、单词重音 英语的每个词，至少有一个音节读得特别重而清楚，而其他的音节则轻而含糊。读得重而清楚的音节，叫作单词重音，又叫重读音节。读得轻而含糊的音节，叫作非重读音节或轻读音节。 Word type Where is the stress？ Examples Two syllables Nouns on the first syllable centre　object　flower Verbs on the last syllable begin　invite　become 英语　八年级下册 9 二、双音节词的规则 1．双音节单词重音通常在第一个音节上。如：'daily，'matter，'clever。 2．双音节单词中有a­， be­， for­， im­， in­， mis­， to­， un­等这些不可分的前缀的双音节词，重音常落在第二个音节上。如：a'bove，be'lieve，for'get，mis'take，to'day，un'happy。 英语　八年级下册 10 找出下列单词中重读音节与其他不同的单词。 ( )1. A. apple　　B. pencil　C. unit 　　D. begin ( )2. A. window B. funny C. connect D. mother ( )3. A. picture B. school C. summer D. report ( )4. A. country B. mistake C. other D. tennis ( )5. A. today B. parent C. husband D. sunny D C D B A 英语　八年级下册 11 $Unit 5　Looking into nature 第二课时　Understanding ideas：Grammar(P71～P72) 英语　八年级下册 1 Ⅰ 重点单词(☆表示拓展词汇，单词加粗部分为词缀) 名词(n.) 1. 布告牌，公告牌_______　2. 模型_______ 　3. 行星________ 4. 鲸_______ 　 动词(v.) 5. 清除；清理_______　　6. 上载，上传________ 形容词(adj.) 7. 符合事实的，真的，真实的 true →事实，真相n. ☆truth board model planet whale clear upload 英语　八年级下册 2 Ⅱ 重点短语 1. 在外太空 2. 对……感兴趣 3. 在过去 4. 绕着太阳转 5. ……的一部分 6. 让某人做某事 in outer space be interested in in the past move around the sun part of … let sb. do sth. 英语　八年级下册 3 Ⅲ 重点句型 1. Is there life in _____ _______ _____ ? 外太空有生命吗？ 2. ____ Mr Brown ____________ ____ insects or birds? 布朗先生对昆虫还是鸟类感兴趣？ 3. That's why Pluto isn't ______ ____ the model. 这就是为什么冥王星不是模型的一部分。 in outer space Is interested in part of 英语　八年级下册 4 that、whether/if引导的宾语从句 Ⅰ that引导的宾语从句 英语　八年级下册 5 (1)宾语从句中从句的语序一定为陈述句语序，由that引导的宾语从句，that只起引导句子的作用，不充当任何成分，且通常可以省略。 (2)当主句的主语为第一人称，且谓语动词是believe、 think、 expect等表示感知的及物动词时，常把对从句的否定转移到主句中，如I think that …→I don't think that …。 英语　八年级下册 6 ( )—Do you believe that humans could live on Mars? —I don't think ________. A. if it comes true B. that it will come true C. why it will come true D. how does it come true B 英语　八年级下册 7 Ⅱ whether/if引导的宾语从句 whether/if引导宾语从句时，意为“是否”。一般情况下，whether/if可以互换使用，但与or not连用时，只能用whether，不能用if。 英语　八年级下册 8 ( )(1) —Excuse me, I wonder ________ the plane can land on time. —Wait a minute, please. Let me check it out. A. what B. if C. which D. that B 英语　八年级下册 9 ( )(2) —Mum, can we go to the park tomorrow? —I'm not sure yet, dear. It depends on ________ it's sunny or not. A. whether B. why C. what D. that A 英语　八年级下册 10 (3)我想知道这是不是一个好消息。 I want to know _________ it's good news ____ _____ ． whether or not 英语　八年级下册 11 Ⅰ 按要求完成下列句子 1. Claire said.Claire finished her homework at 8：00 last night. (用that连接成一个句子) Claire ___________ she finished her homework at 8：00 last night. 2. Linda believes that Mum will buy a new skirt for her. (改为否定句) Linda ___________________ Mum will buy a new skirt for her. said that doesn't believe that 英语　八年级下册 12 3. Emily won first prize in the music competition. Tom wanted to know. (用whether连接成一个句子) Tom ________________________ Emily won first prize in the music competition. 4. I don't know whether Mary will visit my house. (改为同义句) I ______________ Mary will visit my house. 5. Will the teacher come back from the UK soon? I'm not sure. (合并为含有宾语从句的复合句) _____________________ the teacher will come back from the UK soon. wanted to know whether don't know if I'm not sure if/whether 英语　八年级下册 13 Ⅱ 小语篇训练 We have learnt a lot about the universe. Most stars are much 1._______ than the moon, but they look smaller because they are far away from the earth. 2.____ night, the moon is high in the sky like a lamp. But the moon has no light of its own. The light of the moon comes from the sun. The sun gives us light and heat(热量). This means 3.______ plants, animals and humans will die without sunlight. ( )1. A. big B. bigger C. the biggest ( )2. A. At B. In C. For ( )3. A. if B. what C. that bigger At that B A C 英语　八年级下册 14 The earth is going around itself all the time. When one side of the earth 4._______ to the sun, it is the day. The other side is the night 5._________ it is not in the sunlight. The universe is really big and amazing. Scientists have already done a lot to explore it. One day, we might even be able to visit other planets and learn more about them. ( )4. A. turns B. turned C. will turn ( )5. A. before B. because C. until turns because A B 英语　八年级下册 15 语篇类型：说明文　　 主题：人与自然(探索自然)　　 难度： 　　词数：约180　　用时：7分钟 Ⅲ 语法选择 What kind of thing is a word of four letters? What stands everywhere in nature and can make fresh air for us? I don't know 1.____ you know the answer. If you don't know, read the following 2.________， and you will get the answer. ( )1. A. why B. that C. if ( )2. A. slow B. slower C. slowly C C if slowly 英语　八年级下册 16 Almost everywhere on our planet, we can see 3.____ trees. They come in different sizes and kinds. Some are big and tall 4._______ some are short and small. But do you know anything about 5.___________ tree on earth and where it is? ( )3. A. / B. a C. the ( )4. A. because B. while C. though ( )5. A. old B. older C. the oldest / while the oldest A B C 英语　八年级下册 17 Imagine having more than 9, 550 birthdays! There is a tree on earth and it 6.___________ for many years. The tree began growing 7._____ roots at the end of the last ice age. The ice age was a time when much of the earth's surface 8._____________ with ice. The tree was discovered by scientists in Sweden(瑞典) in 2004. ( )6. A. live B. will live C. has lived ( )7. A. its B. it C. itself ( )8. A. cover B. was covered C. was covering C A B has lived its was covered 英语　八年级下册 18 There is nothing unusual 9._______ the tree itself. The tree is a Norwegian spruce. How did the tree live so long? Please read the next part of this test paper 10._________ the answer. You will learn more about the tree. ( )9. A. about B. with C. for ( )10. A. find B. finding C. to find A C about to find 英语　八年级下册 19 $Unit 5　Looking into nature 第四课时　Developing ideas：Reading for writing & Presenting ideas(P76～P81) 英语　八年级下册 1 Ⅰ 重点单词(☆表示拓展词汇) 名词(n.) 1. 视力，视觉_______ 　 2. 放大镜___________ 3. 财富________　 4. 孙女；外孙女 ________________ sight magnifier wealth granddaughter 英语　八年级下册 2 动词(v.) 5. 应在(某处)________ 形容词(adj.) 6. 无数的，无限的_________ 副词(adv.) 7. 几乎不________　8. 轻柔地，柔和地softly→柔和的adj. ☆soft 代词(pron.) 9. 任何人_________ belong endless hardly anybody 英语　八年级下册 3 Ⅱ 重点短语 1. 继续某事 2. 给予某人某物 3. 出生于 4. 执行…… 5. 生病 6. 在……岁时 7. 考虑 8. 属于 9. 事实上 10. 去世 11. 有机会做某事 12. 告诉某人关于某事 carry on with sth. present sb. with sth. be born in carry out fall ill at the age of think about belong to in fact pass away get to do sth. tell sb. about sth. 英语　八年级下册 4 Ⅲ 重点句型 1. But one person ______ _____ __________ all the way to the fields. 但有一个人将自己的兴趣一路延伸到了田野间。 2. Once, he ______ seriously _____ while doing field work in Yunnan. 有一次，他在云南野外工作时得了重病。 took his interest fell ill 英语　八年级下册 5 3. With a magnifier in hand, he still _________ ____ ______ his research for another 10 years. 他手拿放大镜继续他的研究，一干就是十年。 4. For him, the award __________ ____ the team, and he was just doing his job. 对他来说，这个奖项属于整个团队，他只是在做他自己的工作。 5. Instead, they _____ ____ listen to Beethoven's Pastoral Symphony. 相反，他们听到的是Beethoven的《田园交响曲》。 carried on with belonged to got to 英语　八年级下册 6 请根据教材P76～P77的课文，选出下列各题的最佳选项 ( )1. How long did Wang Wencai study plants in China? A. For around 10 years. B. For nearly 20 years. C. For about 37 years. D. For over 70 years. D 英语　八年级下册 7 ( )2. Where was Wang Wencai when he fell seriously ill? A. In Yunnan. B. In Sichuan. C. In Beijing. D. In Guizhou. A 英语　八年级下册 8 ( )3. Why did the writer include Paragraph 3? A. To talk about Wang Wencai's awards. B. To introduce Wang Wencai's granddaughter. C. To mention Wang Wencai's health problems. D. To show Wang Wencai cared about his research the most. D 英语　八年级下册 9 ( )4. What did people hear when they came to say goodbye to Wang Wencai? A. Sad notes. B. A piece of music. C. A piece of bad news. D. Wang Wencai's favourite story. B 英语　八年级下册 10 ( )5. What is the passage mainly about? A. Wang Wencai and his team. B. Wang Wencai and his students. C. Wang Wencai's study journey. D. Wang Wencai's work experiences. D 英语　八年级下册 11 1　Nature presents us with endless wonders. (P76) But we have the best presents from nature. (7BU5) 英语　八年级下册 12 用下划线画出单词的词性与中文意思。 (1)The man presented(n. 礼物 / v. 把……交给) the museum with a gold medal. (2)Getting first prize was the most amazing present( n. 礼物 / v. 把……交给) for my 18th birthday. ______________ ________ 英语　八年级下册 13 2　Nature presents us with endless wonders. (P76) 构词法 用end的正确形式填空。 (1)There are _________ stars in the night sky. (2)Romeo and Jane ____________ their relationship for more than 3 years. endless have ended 英语　八年级下册 14 3　But he didn't let anybody know. (P76) 英语　八年级下册 15 ( )________ anybody going to the park this afternoon？ A. Is　　 B. Are　　 C. Do　　 D. Does A 英语　八年级下册 16 4　Despite his huge success, Wang seldom thought about personal honour or wealth. (P77) The Smiths lives on a wealthy island. 英语　八年级下册 17 根据语境用wealth、wealthy填空。 Once there was a _________ country in the forest. People living in the country had a lot of ________． wealthy wealth 英语　八年级下册 18 5　Although he received the First Class Award of National Nature Science Award twice, he hardly mentioned it. (P77) 英语　八年级下册 19 Linda昨晚几乎没吃什么东西。 Linda ____________ anything last night. hardly ate 英语　八年级下册 20 ( )It is ________ for Jerry to get to school on time, because it is raining ________. A. hard; hardly B. hard; hard C. hardly; hard D. hardly; hardly B 英语　八年级下册 21 6　For him, the award belonged to the team, and he was just doing his job. (P77) (1)The yellow bike belongs to me. ＝ The yellow bike is mine. (2)The car belongs to my father. ＝ The car is my father's. 英语　八年级下册 22 这本书属于Grace的。书上有她的名字。 The book ____________ Grace. Her name is on the book. (1)The e-dictionary doesn't belong to me. ＝The e-dictionary ____________． (2)The book is Judy's. ＝The book _________________． belongs to isn't mine belongs to Judy 英语　八年级下册 23 Despite his huge success, Wang seldom thought about personal honour or wealth. (P77) Although I only replied “thank you”， it turned sunny in my heart. (8AU1) 英语　八年级下册 24 ( ) ________ the heavy rain, the students arrived at school on time. A. Although B. When C. As D. Despite D 英语　八年级下册 25 ( ) ________ the girl wasn't hungry, she still ate a piece of cake. A. If B. Despite C. Although D. Because C 英语　八年级下册 26 尽管他两次获得国家自然科学奖一等奖，但他几乎没有提起过。 英语　八年级下册 27 Ⅰ 语法巩固 ( )1. —Does this yellow ball belong to ________？ —No, it isn't mine. My ball is blue. A. your B. you C. yours D. yourself B 英语　八年级下册 28 ( )2. David thinks about ________ to Zhangjiakou this winter holiday. A. go B. gone C. to go D. going D 英语　八年级下册 29 ( )3. Jack ________ saw his old friend, Lily, after the festival. A. hard B. harder C. the hardest D. hardly D 英语　八年级下册 30 ( )4. The scientist, Yang Zhenning, died at the age ________ 103. A. of B. in C. to D. on A 英语　八年级下册 31 ( )5. ________ the bridge was built fifty years ago, it is still used by people today. A. Despite B. As C. Since D. Although D 英语　八年级下册 32 Ⅱ 完成句子 1. Linda出生于1998年。 Linda _____ ______ ____ 1998. 2. 团队将于下月执行该计划。 The team will _______ _____ the plan next month. was born in carry out 英语　八年级下册 33 3. 事实上，Gina已经练习钢琴一个月了。 ____ ______, Gina has practised the piano for a month. 4. Peter没有参加比赛因为他生病了。 Peter didn't take part in the competition because he __________ _____． 5. 这个病人昨晚安详离世了。 The patient ________ ______ peacefully last night. In fact fell/was ill passed away 英语　八年级下册 34 $Unit 5　Looking into nature 第一课时　Understanding ideas：Reading(P66～P70) 英语　八年级下册 1 英语　八年级下册 2 Ⅰ 重点单词(☆表示拓展词汇) 名词(n.) 1. 恐龙_________　　2. 羽毛，翎________　3. 蜥蜴_______ 4. 琥珀_______　　5. 物种________ 　　6. 观点_______ 7. 报纸___________　　8. 写作，著书________　　9. 风格_______ 10. 方法，办法________　11. 文字材料_______ →教材 n. textbook　 12. 论点，论据___________→争论v. ☆argue 动词(v.) 13. 解锁________ dinosaur feather lizard amber species belief newspaper writing style method text argument unlock 英语　八年级下册 3 形容词(adj.) 14. 羽毛覆盖的_________________　15. 不知道的，未知的__________ 16. 变得兴味盎然，生动起来_____ 17. 北部的_________→北部 n. ☆north 18. 非洲的，非洲人的________→非洲 n. ☆Africa 副词(adv.) 19. 完全地；充分地；彻底地______ 连词(conj.) 20. 是否_________ feather-covered unknown alive northern African fully whether 英语　八年级下册 4 Ⅱ 重点短语 1. 在一片古老的森林里 2. 寻找 3. 伴随着愤怒的叫声 4. 数百年来 5. 看起来像 6. 一块；一片 7. 在地球上 8. 不再 in an ancient forest look for with an angry cry hundreds of years look like a piece of on earth no longer 英语　八年级下册 5 9. 过去常常做某事 10. 来自 11. 投入更多精力到…… 12. 揭开某事的秘密 used to do sth. come from put more effort into … unlock the secret of sth. 英语　八年级下册 6 1. It is running around __________ _____ its next meal. 它正在四处奔跑去寻找它的下一餐。 2. _____ __________ ____ _______, people believed that dinosaurs looked like huge lizards. 数百年来，人们认为恐龙看起来像巨大的蜥蜴。 Ⅲ 重点句型 looking for For hundreds of years 英语　八年级下册 7 3. This species ____ ________ grows in this area. 这个物种不再生长在这个区域。 4. Scientists _______ ____ _________ that ants came from the northern half of the earth. 科学家过去认为蚂蚁来自地球的北半球。 5. We should _____ ______ ________ ______ research. 我们应该投入更多的精力到研究上。 no longer used to believe put more effort into 英语　八年级下册 8 1 　It is running around looking for its next meal. (P68) 与look相关的短语： 英语　八年级下册 9 ( )Robot dogs can help humans look ________ lives in an earthquake. A. after　 B. up　　 C. for　 D. through C 英语　八年级下册 10 ( )Betty always helps her mum ________ her younger sister. A. look through B. look after C. look around D. look out B 英语　八年级下册 11 2　For hundreds of years, people believed that dinosaurs looked like huge lizards. (P68) There are a hundred kinds of blue in the water. (7BU5) 英语　八年级下册 12 ( )Two ________ workers plant ________ trees along the road. A. hundreds; hundreds of B. hundreds; hundred of C. hundred; hundreds of D. hundred; hundred of C 英语　八年级下册 13 3　However, thanks to a piece of amber, scientists now know that this idea is wrong. (P68) My mother bought two pieces of bread. 英语　八年级下册 14 根据语境填写单词，补全句子。 (1)This morning, Tom heard a _______ of news. (2)Helen's dog ate two ________ of bread for breakfast. (1)Maria wrote a piece of _______(music/musical) last night. (2)Jacky bought _______(three/third) pieces of cake. piece pieces music three 英语　八年级下册 15 4　This species no longer grows in this area. (P69) I'm not a little girl anymore. (7AU3) 我再也不乘飞机去那里了。 I will __________ take a plane there. ＝I will _____ take a plane there __________． no longer not anymore 英语　八年级下册 16 5　Thanks to amber, more than 300 unknown species have been discovered.(P69) 构词法 英语　八年级下册 17 用know的正确形式填空。 (1)The FIFA World Cup is ________. Everyone knows it. (2)For some reason, the man's name is still ___________ . Nobody has ever heard of him. known unknown 英语　八年级下册 18 6　Scientists used to believe that ants came from the northern half of the earth. (P69) (1)My grandfather is used to getting up early. (2)Bamboo can be used to make paper. 英语　八年级下册 19 ( ) Amy used ________ to school by bus. A. going　　　　　 B. goes C. to go D. to going C 英语　八年级下册 20 (1)Grandpa Zhang is used _______________ (exercise) every morning. ( )(2)The computer is used ________ for information on the internet. A. search B. searched C. to search D. to searching to exercising C 英语　八年级下册 21 7　However, it's still not fully understood. (P69) The world is full of fantastic animals. (7AU6) 构词法 英语　八年级下册 22 选词填空。 full　　fully (1)Henry _______ understands the rules. (2)Sherry could only nod, because her mouth was ______ of food. fully full 英语　八年级下册 23 8　These goals include making the text alive, making their arguments strong, getting readers' attention, etc. (P70) (1)Tim's grandfather is still alive. (2)Kate is a lively girl. (3)Air is everywhere and it gives life to every living thing. 英语　八年级下册 24 英语　八年级下册 25 ( )The classroom became ________ when the teacher told a funny joke. A. alive　 B. live　 C. living　 D. lived A 英语　八年级下册 26 选词填空。 alive　　lively　　living (1)Mr Zhang is always able to make his classes ________ and interesting. (2)Ms Jin is one of the greatest and oldest ________ writers. He is still _______． lively living alive 英语　八年级下册 27 Ⅰ 语法巩固 ( )1. ________ athletes took part in the marathon and only one ________ of them finished it. A. Thousand; thousands of B. Thousands of; thousand C. Thousands of; thousands of D. Thousand; thousand B 英语　八年级下册 28 ( )2. You can look ________ the museum's opening time on the internet. A. after B. like C. out D. up D 英语　八年级下册 29 ( )3. Tina needs ________ ________ of paper. A. two; pieces B. two; piece C. a; pieces D. an; piece A 英语　八年级下册 30 ( )4. Kevin used ________ pictures, but now he loves dancing. A. draw B. drawing C. to draw D. to drawing C 英语　八年级下册 31 ( )5. Ms Lee puts more effort ________ her new project. A. about B. into C. at D. with B 英语　八年级下册 32 Ⅱ 完成句子 1. 孩子们，你们需要一起揭开自然的秘密。 Kids, you need to ________ _____ ________ ____ nature together. 2. 不再下雨了。动物现在可以出去了。 It is ____ ________ raining. Animals can go outside now. unlock the secret of no longer 英语　八年级下册 33 3. 你一定是世界上最幸福的人！ You must be the happiest person ____ _______! 4. 这个新的模型看起来像一只鸟。 The new model _______ ______ a bird. 5. (能力提升)我的妹妹想知道我是否喜欢猫。(翻译句子) ________________________________________________ on earth looks like My sister wants to know whether/if I like cats. 英语　八年级下册 34 Ⅲ 请根据教材P68～P69的课文，完成短文填空 hundred　and　change　wrong　to　whether　 raise　history　something　secret　complete　but Imagine that a dinosaur in an ancient forest is running around in search of its next meal. The dinosaur seems angry, opening its mouth. It's ready to 1._______ its feather－covered arms. raise 英语　八年级下册 35 Feathers? Wait！For 2.__________ of years, people thought dinosaurs looked like huge lizards. However, thanks to a piece of amber from Southeast Asia, scientists found that this idea is 3.________. In the amber, scientists found a dinosaur's tail with feathers! Amber is 4.___________ amazing. It keeps pieces of the past. It can tell us 5.________ dinosaurs had feathers. It also shows us how life on earth has 6._________. For example, a piece of amber from Northern Europe holds a flower. The flower no longer grows there, proving it lived there 35 million years ago. hundreds wrong something whether changed 英语　八年级下册 36 Thanks to amber, over 300 unknown species have been discovered. In Africa, scientists found 13 ant species in a piece of amber. Research finds that these ants are 7.____________ new species. The finding changed old beliefs about ants' 8._________. I believe in the future, amber can help us find out more 9._________． Amber has been studied a lot，10._____ there's still much to learn. With more research, we can unlock nature's secrets. completely history secrets but 英语　八年级下册 37 1. _________________ 2. _________________ 3. _________________ 4. _________________ 5. _________________ 6. _________________ 7. _________________ 8. _________________ 9. _________________ 10. _________________ raise hundreds wrong something whether changed completely history secrets but 英语　八年级下册 38 $