人教版八下-Unit 7 what's the highest mountain in the world -Section A Grammar focus 4a—4c-ppt课件-(含教案)-省级优课-(编号：10b39).zip

Unit 7 Whats the highest mountain in the world? Section A Free talk: Whoisthemosthard-workingstudentin yourgroup? Whoisthetalleststudentofthefive? Whoisthethinneststudentinourclass? Whoisthemostpopularteacheratschool? Whoisthemostseriousteacherinourclass? Whorunsfastestofus? Whosingsbestamongthethreegirls? Do you know these places? Qomolangma runs along the border between China and Nepal. It is covered with snow all the year round. Its 8844.43 meters high, the highest in the world. Its 26 kilometers long. Qomolangma The Nile is the longest river in the world. Its more than 6600 kilometers long. It runs through 9 countries. Its one of the largest river flows through the international states in the world and runs into the Mediterranean,meditreinin Sea(地中海) in the end. the Nile The Caspian Sea is the biggest lake in the world. It lies in the border between Asia and Europe. the Caspian Sea The Sahara is the biggest desert in the world. It is located in the northern Africa. Climate conditions are very bad. It is one of the earths most not suitable for biological survival. the Sahara Which is the highest mountain in the world? Which is the longest river in Asia?. Match the facts you know. Qomolangma about 9,600,000 square kilometers in size The Sahara1,025 meters deep The Caspian Sea6,671 kilometers long The Nile8,844.43 meters high 1a 8844.43 meters high 1,025 meters deep 6,671 kilometers long 9,600,000 square kilometers in size 高度 深度 长度 面积 长度、宽度、高度、深度等的表示法，有一个 专门的结构，那就是“基数词+单位词（meters ，kilometers,squarekilometers）+形容词(long 长,wide宽,high高,deep深,insize面积)” 观观察与总结1 观观察与总结2 eightthousand,eighthundredandfortyfour,point fourthree sixthousand,sixhundredandseventyone onethousandandtwentyfive ninemillion,sixhundredthousand 千位及千位以上数字的表达：以三位数为一个 单位，每三位数用“，”隔开。 8844.43 6,671 1,025 9,600,000 98 ninety-eight 125onehundredandtwenty-five 1025 6,671 8,844.43 9,600,000 onethousandandtwenty-five sixthousandsixhundredand seventy-one eightthousandeighthundred andforty-fourpointfourthree ninemillionsixhundred thousand 读一读 Lets have a competition: 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. higher the biggest the deepest the longest Listening 1b Qomolangma is higher than any other mountain in the world. =Qomolangma is the highest mountain in the world.注意：higher than any other mountain比 其他任何山都高,any指任何一个,后接单数名词 。即:形容词比较级+than any other+单数名词= 最高级+单数名词。 eg:This book is more difficult than any other book here. Shang is larger than any other city in China. 1c Use the information in 1b to make conversations. Example: A: What is the highest mountain in the world? B: Qomolangma. 自主或小组探究 A:What is the highest mountain in the world? B: A:Which is the deepest salt lake in the world? B: A:Which is the longest river in the world? B: A:Which is the biggest desert in the world? B: A: Which is the second longest river in the world? B: 1c Pair work Group work A:What is the highest mountain in the world?B: A: How deep/ big/ long/high is Qomolangma? B: Its . meters/ kilometers/square kilometers. high deep long insize Have a quiz: 1.His book is _ _ than any other book here.(difficult) 2.This book is _ book in the bookcase here.(useful) 3._ _ is the river? -It is about 2000 kilometers. 4._ is the Qomolangma? -It is 8,843 meters. 5.It is said that the Caspian Sea is 1,025 meters _. more difficult the most useful How long How high deep China is one of the oldest countries in the world. Its over 5,000 years old. And it is the biggest country in Asia. There are two famous rivers in China. One is the Yangze River, the other is the Yellow River. Whats the longest river in China? How long is it? the Yangtze River The Yangtze River is the third longest river in the world, the first Asian rivers. Its 6211.31 kilometers long. It passes through 11 provinces and runs into the East Sea in Shanghai finally. TheYellowRiver,alargeriverinnorthernChina, hasatotallengthofapproximately5,464 kilometersandadrainageareaofapproximately 752,443squarekilometers.Thefifthlongestriver intheworldandthesecondlongestriverin China. Summary and Homework Talk with your partner and write down the answer: If you have a chance to go to the Qomolangma, will you go? What should you take? Grammar focus Whats the highest mountain in the world? Qomolangma. How high is Qomolangma? Its 8,844.43 meters high. Its higher than any other mountain. Which is the deepest salt lake in the world? The Caspian Sea is the deepest of all the salt lakes. Did you know that China is one of the oldest countries in the world? Yes, I did. Its much older than the US. Step 1 Grammar 形容词和副词比较级和最高级变化规则 1. 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 如： clevercleverercleverest fewfewerfewest smallsmallersmallest 等。 2) 以 e 结尾的词，比较级r，最高级st 即可。 如： nicenicernicest cutecutercutest largelargerlargest 3) 以辅音字母y 结尾的变 y 为 ier 或 est。如: easyeasiereasiest happyhappierhappiest 再如：early, busy, heavy, dirty, lazy 也如此。 少数单音节词也是这样，如： pleasedmore pleasedthe most pleased tiredmore tiredthe most tired 2. 不规则变化： good better best well better best badworse 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) Step 2 中考链接 1. 比较级考点 比较级修饰问题 a little, a bit, even, still, much, a lot, far 等可修饰比较级。 e.g. Tom is a little taller than Jim. This book is much more interesting than that one. 同级比较 e.g. The weather in Beijing is colder than that in Xian. Our school is bigger than yours. the + 比较级 e.g. Lucy is the fatter of the two girls. “a/an + 比较级” 表示“又一，再一” e.g. Lily has a doll, but she wants a bigger one. 隐性比较（没有 than 的情况） e.g. Who runs faster, Lucy or Lily? Youd better come earlier next time. He worked hard last term, but he works even harder this term. 越来越. a. 比较级 + and + 比较级 b. the + 比较级 + 句子，the + 比较级 + 句子 a. e.g. Its getting colder and colder. The more you exercise, the better you are. 2. 最高级考点 说明：形容词的最高级前必须加 the; 副词的最高级前省略 the。 范围问题 e.g. Tom is the tallest student in the class. Spring is the best season of the year. “.之一”问题 e.g. Beijing is one of the biggest cities in the world. “the + 序数词 + 最高级” e.g. I think he is the second tallest boy in his class. 3. 比较级和最高级的转换 e.g. Tom is the tallest student in the class. = Tom is taller than any other student in the class. = Tom is taller than all the other students in the class. = No other students are taller than Tom. 2. 同级比较 as + adj./adv. + as e.g. She is as thin as Lily. He writes as carefully as Linda. not + as/so + adj./adv. + as e.g. Tony didnt run so fast as Carter 学以致用 1. Our family has bought a car so we can travel _ than before.（2008 陕西） A. most easily B. less easily C. easily D. more easily 2. My father told me a story last night. It is _ one Ive ever heard.（2009 陕西） A. the funniest B. funniest C. funnier D. the funnier 3. The _ friends you have, the _ you will be.（2010 陕西） A. more, happy B. many, happy C. more, happier D. many, happier 4. When he heard a cry for help, he ran out as _ as he could.（2011 陕西） A. hardly B. quickly C. finally D. slowly 5. This place is not big enough for Lucys birthday party. We should find a _ one.（2012 陕 西） A. big B. small C. bigger D. smaller Step3 Writing Write five questions using comparisons. Then ask your partner your questions Step 4 Fill in the blanks with the correct forms of the words in the box. big much popular long old high 1. The Amazon River is one of the _ rivers in the world. Its a little _ than the Yangtze River. 2. Qomolangma is 8,844.43 meters _. Its 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. Step 5 Write two comparisons about two topics. Write true facts. e.g. Two rivers: the Yangtze River and the Amazon River The Yangtze River is almost as long as the Amazon River. The Amazon is longer than the Yangtze, but the Yangtze River is the longest river in China. Two cities: _ and _ 1. _. 2. _. Two animals: _ and _ 1. _. 2. _. Step5 Homework 1. To memorize the important phrases and sentences. 2. To make some sentences using as as, . times than, less than, more than