Unit 7 Section A Grammar Focus～4c课件 2024-2025学年英语人教版八年级下册

Unit 7 What’s the highest mountain in the world? Section A (Grammar Focus~4c) 23002 1 1.学习目标 3.重点探究 2.自主学习 学习导航 5.当堂检测 6.课堂总结 4.拓展提升 23002 2 新课导入 Can you translate the following sentences? 长江大约长6,300千米。 The Yangtze River is about 6,300 kilometers long. 黄河长5,464千米。 The Yellow River is 5,464 kilometers long. 明朝的长城大约有8,850千米长。 The Great Wall in Ming dynasty is about 8,850 kilometers long. 珠穆朗玛峰高8,844.43米，所以攀登起来很危险。 Qomolangma is 8,844.43 meters high and so is very dangerous to climb. 学习目标 1.能记住并会运用下列单词及短语:ocean, the Pacific Ocean。 2.能记住形容词比较级和最高级的构成,会运用比较级和最高级的几个句型。 5 自主学习 New words & phrases 1.n. 大海；海洋 ____________________ 2.n. 太平洋 ____________________ 3.最古老的国家之一 ____________________ 4.所有的咸水湖 ____________________ 5.老得多 ____________________ 6.世界上 ____________________ 7.和……一样大 ____________________ 8.在我们的城市 ____________________ 9.其他的 ____________________ ocean the Pacific Ocean all the salt lakes one of the oldest countries much older in the world as big as in our city any other 23002 6 重点探究 读下列句子，你能总结出句子中包含的语法吗? What's the highest mountain in the world? Qomolangma. How high is Qomolangma? It's 8,844.43 meters high. It's 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. It's much older than the US. 拓展提升 Language points 形容词和副词的比较级和最高级 1.大多数形容词和副词都有三个级。 1) 原级: 常用结构 as ... as... 像..….一样 e.g. 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：形容词比较级＋than ... e.g. He is taller than me. 他比我高。 3) 最高级(用于三者或三者以上的比较)， 常用结构: the + 形容词的最高级＋of / in ... e.g. He is the tallest of the three. 他是这三个人中最高的。 形容词和副词的比较级和最高级 规则 原级 比较级 最高级 （1）一般单音节词在词尾加-er和-est long fast longer faster longest fastest （2）以“e”结尾的单音节词在词尾加-r和-st nice late nicer later nicest latest 规则 原级 比较级 最高级 （3）重读闭音节，词尾只有一个辅音字母，须双写最后一个辅音字母，再加-er或-est big hot sad glad bigger hotter sadder gladder biggest hottest saddest gladdest （4）辅音字母+y结尾，变y为i，再加-er和-est heavy angry funny heavier angrier funnier heaviest angriest funniest 不规则变化 原级 比较级 最高级 good/well好的 better更好的 best最好的 bad差的，ill坏的 worse更差的；更坏的 worst最差的； 最坏的 many/much多的 more更多的 most最多的 little少的 less更少的 least最少的 原级 比较级 最高级 old年老的；古老的 older较老的；较旧的 oldest最旧的；最年长的 elder年长的 eldest最年长的 far远的 farther（指距离）更远的 farthest最远的 further（指距离和抽象概念）较深远的 furthest（指距离和抽象概念）最深远的 比较级用法 用法 例句 (1)双方比较，表示一方超过另一方时，用“比较级+than”结构 China is larger than Italy. 中国比意大利大。 (2)用于“less+原级+than”（注意此结构不用于单音节词） The book is less interesting than that one. 这本书不如那本书有趣。 (3)倍数+比较级+than The box is three times bigger than that one. 这个箱子是那个的三倍大。 比较级用法 例句 (4)“比较级+and+比较级”表示“越来越……” Our country is becoming stronger and stronger. 我们的国家正变得越来越强大。 (5)“the+比较级……，the+比较级……”表示“越……，就越……” The more, the better. 多多益善。 (6)the+比较级+of the two+名词复数 The taller of the two boys is my brother. 两个男孩中，较高的那一个是我的哥哥。 最高级用法 例句 (1)the+形容词最高级+名词+表示范围的短语或从句 Spring is the best season of the year. 春天是一年中最好的季节。 (2)“one of the+最高级+复数名词”表示“最……之一” Kobe is one of the best basketball players in NBA. 科比是NBA最好的篮球运动员之一。 形容词和副词比较级的其他用法 形容词和副词比较级的修饰语 1. 比较级前可加much, a lot, a bit, a little, any, no, some, even, still等词修饰。 e.g. You must work much faster. You look a lot happier than you did yesterday. 2. 形容词最高级可被second, third等序数词修饰。 e.g. The building is the second tallest in this city. 3.用于“as...as...”结构中，否定形式为not as/ so...as... e.g. The picture is not so good as that one. 4.表示“A是B的......倍”时，用A+谓语动词+倍数+as+原级+as+B. e.g. Our school is twice as large as theirs. 5. 修饰形容词原级的词：very, too, so ,enough, quite等。 e.g. The girl is so beautiful. 4a Fill in the blanks with the correct forms of the words in the box. 重点探究 1. The Amazon River is one of the ________ rivers in the world. It’s a little ________ than the Yangtze River. 2. Qomolangma is 8,844.43 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. big much popular long old high much longest longer high popular big older 4b Write two comparisons about two topics. Write true facts. Two rivers: _________________ and _________________ __________________________________________________________________________________________________________________________________________________ the Yangtze River 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.__________________________________________________________________ Singapore Shanghai Shanghai is as modern as Singapore. Shanghai is bigger than Singapore and has a larger population than Singapore. Two animals: _______________ and _______________ 1.__________________________________________________________2.__________________________________________________________ Monkey Dog A dog is bigger than a monkey. A monkey is smaller than a dog, but it climbs a tree faster than a dog. 4c Write five questions using comparisons. Then ask your partner your questions. 1. _________________________________ 2. _________________________________ 3. _________________________________ 4. _________________________________ 5. _________________________________ What is the highest building in our city? What is the busiest subway station in our city? What is the largest shopping mall in our city? What is the biggest park in our city? What is the longest road in our city? 当堂检测 Ⅰ. 翻译句子。 1. The Yangtze River is__________________ river in the world. (第三长河) 2. The Atlantic is _________________ocean in the world. (第二大洋) 3. Lin Tao is __________________________ in the class because he never gets to school on time. (最懒的学生之一) 4. Edison was_________________________ in the world. (最伟大的发明家之一) one of the laziest students the third longest the second biggest one of the greatest inventors Ⅱ. 完成句子。 1.Hainan is a very large Island. It is the second ________ island in China. (large) 2.Our teacher is as ______ as before. (busy). 3.He is ______________ among us. (careful) 4.Li Lei jumped ______ than Jim. (far) 5.The busier he is, the ________ he feels. (happy) 6.I think Yao Ming is one of ____________ basketball players in NBA. (hot) busy the most careful farther happier largest the hottest 课堂总结 Unit 7 Section A (Grammar Focus~4c) 重点词汇及短语： __________________________________ __________________________________ __________________________________ __________________________________ ocean much older all the salt lakes the Pacific Ocean one of the oldest countries in our city any other as big as in the world 形容词、副词的比较级和最高级: 比较级用于1._______之间做比较，最高级用于2.________________做比较。规则形容词和副词的比较级是在词尾加3._____，最高级是在词尾加4._____，一般情况下，最高级前需加5._____。 两者 三者或三者以上 er est the $$