unit7Whatsthehighestmountainintheworld第一课时.ppt

What’s the highest mountain in the world?Section A 1a – 1cUnit 7学习目标1.掌握形容词最高级的变化规律2.会运用最高级对同类事物进行比较3.了解4个世界之最看一看 1分钟Do you remember?tall _____ ______short _____ ______small _____ _____cheap _____ _____fat _____ ______big _____ ______heavy _____ ______nice _____ _____expensive ________ ________tallertallestshortertallestsmaller smallestcheaper cheapestfatterfattestbiggerbiggestheavierheaviestnicernicestmore expensivemost expensive说一说 3分钟GeographyToday, we’ll have a geography class in English.Now, I have some questions to ask you.Do you know these places?the Saharathe Caspian SeaQomolangmathe Nile说一说 3分钟Zhujiang River is _______.Yellow River is ________ than Zhujiang River.Yangtze River is the ________ river in China.What is the longest river in the world?The Nile is the _________ river in the world.珠江珠江2210公里公里黄河黄河5464公里公里长江长江6300公里公里尼罗河尼罗河6671公里公里longlongerlongestlongest说一说 3分钟The Tai Mountain is ____.The Emei Mountain is ______ than Tai Mount.Qomolangma is ______________.highhigherthe highestQomolangma说一说 3分钟The Caspian Sea is a ______ (lake / sea).lakeThe Caspian Sea 里海地处亚欧大陆腹部，东、北、西三面湖岸分属土库曼里海地处亚欧大陆腹部，东、北、西三面湖岸分属土库曼斯坦共和国、哈萨克斯坦共和国、俄罗斯联邦和阿塞拜疆共斯坦共和国、哈萨克斯坦共和国、俄罗斯联邦和阿塞拜疆共和国，南岸在伊朗境内。

里海的南面和西南面被厄尔布尔士和国，南岸在伊朗境内里海的南面和西南面被厄尔布尔士山脉和高加索山脉所环抱，其他几面是低平的平原和低地山脉和高加索山脉所环抱，其他几面是低平的平原和低地整个海域狭长整个海域狭长, 南北长约南北长约1200公里，是世界最长及唯一长度公里，是世界最长及唯一长度在千公里以上的湖泊；东西平均宽约在千公里以上的湖泊；东西平均宽约320公里，湖岸线长约公里，湖岸线长约7000公里，面积公里，面积371000平方公里，最大深度为平方公里，最大深度为1025m ，湖，湖水总容积为水总容积为76000立方公里立方公里 里海的湖底深度不同，北浅南深，湖底自北向南倾斜，水里海的湖底深度不同，北浅南深，湖底自北向南倾斜，水面低于外洋海面面低于外洋海面28米，湖水平均深度约米，湖水平均深度约180米有岛屿约米有岛屿约50个，面积约个，面积约350平方公里有平方公里有伏尔加河伏尔加河、乌拉尔河、、乌拉尔河、库拉库拉河、河、捷列克河等捷列克河等130多条河流注入多条河流注入听一听 2分钟The Sahara is a ________(desert / mountain)desertthe Sahara 撒哈拉沙漠约形成于二百五十万年前，撒哈拉沙漠约形成于二百五十万年前，乃世界第二大荒漠，仅次于乃世界第二大荒漠，仅次于南极洲南极洲，是世，是世界最大的沙质荒漠。

它位于非洲北部，气界最大的沙质荒漠它位于非洲北部，气候条件非常恶劣，是地球上最不适合生物候条件非常恶劣，是地球上最不适合生物生存的地方之一生存的地方之一 其总面积约其总面积约9,065,000平方公里平方公里,容得下容得下整个美国本土整个美国本土撒哈拉撒哈拉”是阿拉伯语的是阿拉伯语的音译，源自当地游牧民族图阿雷格人的语音译，源自当地游牧民族图阿雷格人的语言，原意即为言，原意即为“沙漠沙漠”听一听 2分钟Exercise 1 MatchQomolangmaThe SaharaThe Caspian SeaThe Niledeeplonghighbigstrong练一练 1分钟Exercise 2 Matchabout 9,600,000 square kilometers in size1,025 meters deep6,671 kilometers long8,844.43 meters highQomolangmaThe SaharaThe Caspian SeaThe Nile练一练 1分钟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.higherthe biggestthe deepestthe longest练一练 5分钟A: What’s the highest mountain in the world?B: _____________________.A: What’s the biggest desert in the world?B: _____________________.A: What’s the deepest salt lake in the world?B: _____________________.A: What’s the longest river in the world？？B: _____________________.Please work in pairs.练一练 5分钟当堂检测一、写出一下词语的比较级和最高级：一、写出一下词语的比较级和最高级：big _____ _____ deep _____ ______high _____ ______ long ______ ______二、单项选择：二、单项选择：1.Yao Ming is ___ basketball player in China. A. tall B. taller C. the tallest2.Miss Zhang is ___ than Zhang Xiaoling. A. old B. older C. oldestbigger biggestdeeper deepesthigher highestlonger longest三、说出以下地点的名称。

原级比较级最高级talltallerfastfasterfinefinerdrydriereasyeasierbigbiggerfatfatteroutgoingmore outgoingpopularmore populartallestfastestfinestdriesteasiestbiggestfattestmost outgoingmost popular1.直接加直接加est构成最高级构成最高级2. 以以e结尾的，直接加结尾的，直接加st3.以辅音字母加以辅音字母加y结的，结的，改改y为为i，再加，再加est4. 双写最后的辅音字双写最后的辅音字母，再加母，再加est5.多音节及部分双音节多音节及部分双音节词在前面加词在前面加most构成构成最高级最高级听一听 4分钟不规则变化：不规则变化：good/wellbad/badlymany/muchfaroldlittle-better-best-worse-worst-more-most-farther/further-farthest/furthest-older/elder-oldest/eldest-less-least听一听 2分钟使用比较级或最高级应注意的几点使用比较级或最高级应注意的几点1. 例：例：He is tall.He is very short, but taller than me.Of the three girls, Mary is the tallest.（没有比较，用原级）（没有比较，用原级）（两者之间比（两者之间比较，用比较级）较，用比较级）（多者比较，用最高级）（多者比较，用最高级）2. 例：例：This is the best room in the hotel.He studies (the) hardest of all the students.形容词最高级前常加形容词最高级前常加the，副词最高级前，副词最高级前the可有可无可有可无听一听 2分钟3. 例：例：Japanese is much more difficult than English.Your spoken English is a little better than mine.比较级前常用的修饰语有：比较级前常用的修饰语有：even, a lot, a bit, much, a little 等。

等( )1. Jack is _____ than Tom. A. tall B. as tall as C. taller D. the tallest( )2. Who is ______, Tom, Jack, or David?A. tall B. as tall as C. taller D. the tallest(　)3. The yellow river is one of ______ river in China.A. long B. the long C. the longer D. the longestCDD练一练 5分钟( )4. Of all the subjects, English is _____ for me. A. interesting B. more interesting C. the most interesting D. much more interesting( )5. I didn’t buy the second-hand book because the seller wanted ______ money than I had expected. A. less B. least C. most D. moreCD1,200thousand 千千one thousand, two hundred111,200one hundred and eleven thousand, two hundred1,111,200111,111,200million百万百万one million, one hundred and eleven thousand, two hundredone hundred and eleven million, one hundred and eleven thousand, two hundred听一听 5分钟3002,30020,3001,500,30013,500,300million ，， thousand ，， hundred，，***three hundredtwo thousand, three hundredtwenty thousand, three hundredone million, five hundred thousand, three hundredthirteen million, five hundred thousand, three hundred练一练 4分钟Homework。