Unit 7 Section A Grammar Focus-4c 语法课优质课课件(共26张)+音频-2022-2023学年度八年级英语下册同步课堂课件（人教版）

人教新目标八年级下册 Unit 7 What’s the highest mountain in the world? Section A Grammar Focus-4c 语法课公开课 Learning goals 1.在语境中认读、理解运用下列词汇: ocean, the Pacific Ocean； 2.理解用大数字表达长、宽、高、深的相关用法； 3.复习并掌握形容词和副词三个等级原级；比较级和最高级的用法； 4.通过4a和4b练习进一步巩固知识； 5.通过本节课学习,提高同学们对于保护濒危野生动物的意识。 New words Read and repeat. ocean/ˈəʊʃn/ n. 大海；海洋 the Pacific Ocean /ðə pəˈsɪfɪk ˈəʊʃn/ n. 太平洋 Warm up Let’s watch a video. His arm was caught when he wasclimbing. He used his knife to cut off half hisright arm. ls climbing mountaindangerous? Top of the world 1.The Nile is the longest river in the world. 2.The Caspian Sea is the deepest of all the lakes. 3.Qomolangma is one of the highest mountains in the world. superlative degree(最高级) Lead in Geographic facts 地理常识 the longest river (have) the biggest population the highest mountain the biggest country the biggest desert the biggest salt lake the biggest ocean the biggest continent Ask and answer - What is longest river/the biggest country in the world? …… - Which country has the biggest population? 观察 思考 回答 形容词的最高级 语法探究之一 方框中的词形表现了什么语法？ Leading-in 规则变化 Revision: 形容词和副词的比较级和最高级 ①直接加-er 或 -est tall—________—______ long—_______— ________ taller tallest longer longest ②以不发音的字母e结尾的单词直接加-r或 -st nice—_____— ____ nicer nicest ③以“辅音字母加y” 结尾, 把y变i，再加-er或-est heavy—_______— ________ heavier heaviest ④重读闭音节（末尾只有一个辅音字母）双写辅以字母 再加-er或-est big—_______— ________ bigger biggest ⑤部分双音节词和多音节词 分别在原级前加more构成比较级 和most构成最高级 slowly—_____________— _______________ beautiful—__________________— ____________________ more slowly the most slowly more beautiful the most beautiful 不规则变化 原级 比较级 最高级 good\well better best bad\badly worse worst many\much more most little less least old older\elder oldest\oldest far farther(更远) further(进一步的) farthest\furthest Revision: 形容词和副词的比较级和最高级 英语中的副词和形容词有三个等级：原级，比较级和最高级 1. …as +原级 +as … “和…一样” 你和我一样高。 Lily和Lucy 跑的一样快。 You are as tall as me. Lily runs as fast as Lucy.