Unit7 SectionA（1a-2d）课件2024-2025学年人教版八年级英语下册

Unit 7 What’s the highest mountain in the world? Period 1 Watch a video. What’s it about ? 2 mountain river lake sea salt lake fresh lake / 'dezət / desert Travel around the world Travel around China Travel back to Xiamen Travel around the world /ˈtʃəʊməʊˌlɑːŋmə/ Qomolangma /sə'hɑ:rə/ The Sahara a desert /'kæspɪən/ The Caspian Sea (a salt lake) /naɪl/ The Nile Match the facts you know. Qomolangma about 9,600,000 square kilometers in size The Sahara 1,025 meters deep The Caspian Sea 6,671 kilometers long The Nile 8,844.43 meters high 1a Qomolangma is …. high. 单击此处编辑母版文本样式 第二级 第三级 第四级 第五级 Look at 1a match the facts you know. 11 Observe and think 9,600,000 1,025 6,671 8,844.43 100 1,000 10,000 100,000 1,000,000 10,000,000 100,000,000 1,000,000,000 thousand million billion 1,000,000,000.12 point 169,800,450.12 one hundred and sixty-nine million Large numbers million thousand eight hundred thousand four hundred and fifty point one two point one thousand five hundred and sixty-eight Let’s try! sixteen thousand one hundred sixty-seven thousand eight hundred and ninety two thousand and eight fifty-two point three five eight two point one six zero point one 2.16 0.1 52.358 462,680 four hundred and sixty-two thousand six hundred and eighty two million two hundred and twenty-two thousand eight hundred 2,222,800 Observe and think 9,600,000 1,025 6,671 8,844.43 nine million six hundred thousand eight thousand eight hundred and forty-four point four three one thousand and twenty-five six thousand six hundred and seventy-one 1: 1---12: (记住每个单词) 2: 13---19: -teen (thir-, fif-, eigh-) 3: 20---90: -ty (twen-, thir-, for-, fif-, eigh-) 4: 21---99: 十位 _ 个位 5: 100, 200, ... 900: _______ hundred 6: 101---999: _______ hundred and __ 个位 十位 __ _ 个位 小结: 7: 多位数: 1, 000, 000, 000_ __ billion, __ million, __ thousand, __ hundred and (十亿) (百万) （千） 个位 十位 _ _ 个位 _ Observe and conclude 14 year 8,844 meter 9,600,000 square kilometer 1,025 meter 6,671 kilometer s s s s s old high in size deep long 1b Listen and complete the sentences. 1. Qomolangma is _________ than any other mountain in the world. 2. The Sahara is _____________desert in the world. 3. The Caspian Sea is ___________ of all the salt lakes. 4. The Nile is _____________ river in the world. *5. The Amazon is the ____________ river in the world. higher the biggest the deepest the longest Listening skills: Before listening ,read and try to predict. second longest 听力原文 “the+序数词+最高级+单数名词+in…” 表示“是……中的第几……” “比较级+than any other+名词+其他”表示“比其他任何一个……都……” 注：该结构可与“the+最高级+其他”相互转换 Listen and repeat. Pair work Make conversations A: What is the highest mountain in the world? B: Qomolangma. A: How high is it? B: It’s 8,844.43 meters high. longest/deepest/ biggest… How long is it? It’s 6,671 kilometers long. How big is it? It’s 9，600，000 square kilometers in size. How deep is it? It’s 1025 meters deep. Travel around China China is one of the oldest countries in the world. It’s over 5000 years old. China has the most people on the earth. And it is the biggest country in Asia. As Chinese, how much do you know about our motherland? The differences between China and America over 5000 years less than 300 years China is much older than the US. China has a much longer history than the US. history The differences between China and America 1,4billion 322million population The population of China is a lot bigger than that of the US. /ˌpɒpjuˈleɪʃn/ What’s the population of China? The differences between China and America 9,634,057 square kilometers 9,631,420 square kilometers China is almost as big as the US. China is about the same size as the US. size The differences between China and America the Yangtze River the Mississippi River the longest river 2a/2b Number the facts in order , then fill in the blanks with the numbers. ___ The Yangtze River is about _______ kilometers long and the Yellow River is ______ kilometers long. ___ China has the biggest population in the world. It’s a lot bigger than the population of the US. ___ China is over ______ years old. It has a much longer history than the US. The US is not even _____ years old. ___ China is almost as big as the US, but it is the biggest country in Asia. 4 2 1 3 6,300 5,000 5,464 300 6,300 5,464 5,000 300 Listening strategy: Find out key words to help you locate the answers. 听力原文 ① ② ③ ④ Listen and repeat. We are talking about sth. that is always or generally true, i.e. facts, so we use the simple present here. e.g. The teacher said there are 1,440 minutes in a day. Attention! “Did you know” is more polite than “Do you know” here. This sentence means: 1. It’s OK if you didn’t know, because I can share the information with you. (Then the person who is asked the question will not feel uncomfortable if he/she did not know. ) 2. You might already know, but it doesn’t matter because I can still share the information with you and we can talk about it more. Pay attention to these comparative structures. 同级比较结构 Summary-Geographic facts 之最 A is the highest/longest/biggest/deepest/oldest (mountain/sea/country) in the world. A has the biggest/largest population in the world A has the longest history in the world 2. Figures (数据) A is 8844.43 meters/kilometers/square kilometers high/deep/long/wide/in size. 数字 单位 高/深/长/宽/大小 Travel back to Xiamen Activity I’m a five-star guide! Gulangyu Island Zhongshan Road Xiamen Wuyuan No2. Experimental School Amoy Circular Road Size 334.64km2 population 3,920,000 Mountain Yunding Mountain (1175.2m, the highest) Island Gulangyu Island (more popular than any other place) Places of interest Zhongshan Road(1.2km long), Xiamen Wuyuan No2. Experimental School (one of the most beautiful)… You’re a tour guide. Please introduce Xiamen to the visitors. Use the following information to help you. Activity I’m a five-star guide! Good morning, everyone. Welcome to Xiamen. I’m your tour guide XX . Today I will show you around Xiamen. First I’d like to tell you something about Xiamen ... I hope you’ll have a great time. Size 334.64km2 population 3,920,000 Mountain Yunding Mountain (1175.2m, the highest) Island Gulangyu Island (more popular than any other place) Other places of interest Zhongshan Road(1.2km long), Xiamen Wuyuan No2. Experimental School(one of the most beautiful)… Show Time I’m a five-star guide! 2. How long is the Ming Great Wall? Read the dialogue in 2d, then answer the questions below. It’s about 8,850 kilometers long. The main reason was to protect their part of the country. Yes, it’s the most famous part. 3. Why did the ancient emperors build the wall? 4. Is Badaling part of the Ming Great Wall? What’s the conversation about? It’s about a tour to the Great Wall. 2d Role-play the conversation. Guide: Feel free to ask me anything on today’s Great Wall tour. Tourist 1: How long is the wall? Guide: Ah, the most popular question! If we’re only talking about the parts from the Ming Dynasty, it’s about 8,850 kilometers long. This makes it the longest wall in the world. Tourist 2: Wow, that’s amazing! Why did the ancient emperors build the wall? Guide: The main reason was to protect their part of the country. As you can see, it’s quite tall and wide. As far as I know, there are no man-made objects as big as this. Tourist 3: Is Badaling part of the Ming Great Wall? Guide: Yes, it’s the most famous part. 长江长约6,300千米。 黄河长5,464千米。 长江比黄河长。 长江是中国最长的河。 The Yangtze River is about 6,300 kilometers long. The Yellow River is 5,464 kilometers long. The Yangtze River is longer than any other river in China. The Yangtze River is the longest river in China. The Yangtze River is longer than the Yellow River. Translate the following sentences. 计量的表达方法可以是： 基数词+度量词(单/复数)+形容词(high/old/long/wide/tall/deep/ thick等)。 比较级用于比较两个主体，之后可用than引出比较的对象 “比较级+than any other+名词+其他” 表示“比其他任何一个……都……” 该结构可与“the+最高级+其他”相互转换 Goliath is the _______ elephant in the forest. His father is the _______ elephant in the forest. Watch and fill in the blanks. smallest biggest 形容词的最高级前面要加定冠词the 三者或三者以上的人或物进行比较时，用最高级。 在含有最高级的句子中，常有一个in/of短语来表示比较范围。 Observe and learn 1) Qomolangma is ______ than any other mountain in the world. 2) The Sahara is __________ desert in the world. 3) The Nile is ___________ river in the world. 4) China has ___________ population in the world. 5) It’s a lot ______ than the population of the US. Fill in the blanks. higher the biggest the longest go Ready? the biggest bigger 6) China is over 5000 years old. It has a _____ ______ history than the US. 7) China is almost ___ ___ ___ the US, and it is the _______ country in Asia. 8) This makes it __________ wall in the world. 9) It’s _______________ part. 10) One of the world’s ______________ sports is mountain climbing, and one of _______________ places for this is the Himalayas. much longer as big as biggest the longest the most famous most dangerous the most popular 形容词和副词的比较级和最高级 大多数形容词和副词都有三个级 1) 原级: 常用结构as ... as ... “和..….一样” Zhang Hong is as tall as Tom. 张红和汤姆一样高。 2) 比较级 (用于两者之间的比较) 常用结构：比较级＋than ... He is taller than I. 他比我高。 Grammar 3) 最高级(用于三者或三者以上的比较)， 常用结构: the + 最高级 + of / in ... He is the tallest of the three. 他是这三个人中最高的。 He is the funniest in his class. 他是他们班最有趣的。 形容词、副词比较级和最高级的构成 a) 规则变化 1) 一般情况下，单音节或双音节的形容词 （或副词）比较级＋er， 最高级＋est clever－cleverer－cleverest few－fewer－fewest small－smaller－smallest等 2) 以e结尾的词，比较级＋r，最高级＋st nice－nicer－nicest cute－cuter－cutest large－larger－largest等 3) 以辅音字母＋y结尾的，变y为i＋er或est easy－easier－easiest happy－happier－happiest等 4) 以一个辅音字母结尾的重读闭音节，双 写辅音字母＋er或est fat－fatter－fattest thin－thinner－thinnest hot－hotter－hottest wet－wetter－wettest big－bigger－biggest等 5) 多音节和部分双音节的词需要在形容词 原级前＋more构成比较级，＋the most构 成最高级 beautiful － more beautiful － the most beautiful delicious, popular, important, interesting, expensive, creative 双音节的词 careful － more careful － the most careful useful － more useful － the most useful 6) 不规则变化 good —better — best well —better — best bad－worse － worst many, much — more — most far — farther — farthest (距离远) far — further — furthest (程度深) old — elder — eldest (长幼) old — older — oldest (年龄) 形容词和副词比较等级的常用结构 1. “比较级+ than any other +名词+其他” 表示“比其他任何一个……都……” 该结构可与“the+最高级+其他”相互转换 The bag is cheaper than any other bag in the store. =The bag is the cheapest in the store. 2. “比较级 + and + 比较级”表示“越来 越……” The earth is getting warmer and warmer. 地球变得越来越暖和。 3. “the + 比较级, the + 比较级”表示 “越……，就越……” The more you practice, the better you’ll play the piano. 4. “the + 比较级 + of the two”表示“两者之中更……的那一个” Susan is the taller of the two girls. 5. “数词 + times + 比较级 + than”表示 “……是……的几倍” The elephant weighs ten times more than the panda. 另: 比较级前可用much, a little, a lot, even等修饰， 表强调，如： The girl sang even worse this time than usual. 6. “one of the + 形容词最高级 + 复数名词”意为“最……之一” It is one of the best theaters in our town. 7. “the + 序数词 + 最高级 + 单数名词 + in …”表示“是……中的第几……” The Yellow River is the second longest river in China. Fill in the blanks with the correct forms of the words in the box. 4a big much popular long old high The Amazon River is one of the _______ rivers in the world. It’s a little ______ than the Yangtze River. Qomolangma is 8,848.43 meters _____. It’s one of the most ________ places for serious mountain climbers. 3.No ocean in the world is as ___ as the Pacific Ocean. 4.Although Japan is _____ than Canada, it is _____ smaller. longest longer high popular Practice P52 big older much Write two comparisons about two topics. Write true facts. 4b Two cities: Singapore and Kuala Lumpur (吉隆坡) Kuala Lumpur is as modern as Singapore. Singapore is bigger than Kuala Lumpur and has a larger population than Kuala Lumpur. For example: 策略：可以比较城市的面积、人口、历史等 P52 Two animals: Monkey and Dog A dog is bigger than a monkey. 2. A monkey is smaller than a dog, but it climbs a tree faster than a dog. 策略：可以比较动物的身高(身长)、体重、奔跑速度、外貌特征以及寿命等 Pair work 4c Write five questions using comparisons. Then ask your partner your questions. What is the highest building in our city? What is the largest shopping mall in our city? Which is the biggest park in our city? Which is the longest road in our city? What’s the biggest city in China? ... 注意：在使用比较级或最高级时要有相对明确的比较范围或参照物 P52 Review 课时重点回顾 形容词的比较级和最高级 比较级： 主语 + 谓语(系动词) + 形容词比较级 + than + 对比成分 最高级： 主语 + 谓语(系动词) + the + 形容词最高级 + 名词 + 表示范围的短语或从句 句型 例子 比较级 A+实义动词+副词比较级+than+B Tom works faster than David. I speak English more fluently now than last year. 最高级 A+实义动词+副词最高级(+of/in…)，副词最高级前的the可省略 I jumped (the) highest in my class. Our team played (the) worst of all. 副词的比较级和最高级 1. A male (雄性) panda is usually _______ 　　　　　 (heavy) than a female one. 2. With fewer cars, I think the town will be 　_______ (green) and _______________ 　　　　　 (beautiful). 3. My dog is the ________ (clever) animal of all. 4. Mary takes much exercise these days. She looks a little _______ (slim) now. 5. Football is the ____________ (popular) game around the world. I. Fill in the blanks. heavier greener more beautiful cleverest slimmer most popular Check your answer. 6. I think English is ____________ (difficult) than Chinese. 7. Don’t speak English too fast. Please speak it _______ (slow). 8. My brother always gets up ______ (early) than me every day. But I have breakfast ____________ (quick) than him. 9. Who sings ___________ (loudly), Amy or Mary? 10. This term, Daming listens to the teacher _____________ (careful) and studies much _______ (hard) than last term. more difficult slowly earlier more quickly more carefully harder more loudly Peter is good at jumping. He jumped ______________　　 (far) of all in the long jump in this year’s sports meeting. He is also good at running. He always runs ______ (fast) than any other player on the field. He practises football much _______ (hard) than his teammates. He will feel very bad if he does ______　 (bad) in a match. Doing sports doesn’t make Peter fall behind others in his lessons. He does ______ (well) in his lessons than most of his classmates. He always works out maths problems ____________ (quickly) than other students. He always listens to the teachers very __________ (careful) in class. Peter is good at both sports and his lessons. I think he should be this year’s Mr Sport. II. Fill in the blanks with the correct forms of the words in brackets. farthest/furthest faster harder badly better more quickly carefully 1. 他的鞋子比我的贵多了。 His shoes are much _______________ ___________. 2. 他是他们学校跑得最快的运动员。 He is ________________ in his school. 3. 我觉得野营是最刺激的户外运动之一。 I feel camping is ________________ ________ outdoor activities. III. 根据汉语意思完成句子。 more expensive the fastest runner than mine one of the most exciting Homework Copy 1a+1b 明天听写生词（square-Asia）+1a +1b+1c 2. Write out the numbers: 6,678 8,897.64 9,605,600 2007 37,180 8,850 300 3. Each group prepare a quiz to ask: (at least 3 Questions) Eg. What is the longest river in China? Yangtze River. $$