初中英语课件Unit 7 Whats the highest mountain in the world-Section A Grammar Focus课件

Unit7What'sthehighestmountainintheworld?SectionAGrammarFocusTeachingaims:1.能够正确读出GrammarFocus中的句子；2.初步掌握形容词、副词的比较级和最高级的用法。What'sthehighestmountainintheworld?Qomolangma.HowhighisQomolamgma?It's8848.86metershigh.It'shigherthananyothermountain.Whichisthedeepestsaltlakeintheworld?TheCaspianSeaisthedeepestofallthesaltlakes.DidyoukonwthatChinaisoneoftheoldestcountriesintheworld?Yes,Idid.It'smucholderthantheUS.GrammarFocus观察句子红色字体单词，说一说他们的特点形容词的比较级和最高级比较级，最高级的构成规则变化1)一般情况下，单音节或双音节的形容词/副词比较级＋er，最高级＋estsmall-smaller-smallest2)以e结尾的词，比较级＋r，最高级＋stnice－nicer－nicest3）以辅音字母＋y结尾的，变y为i＋er,+esteasy－easier－easiest

比较级，最高级的构成4)以一个辅音字母结尾的重读闭音节，双写辅音字母+er/estfat－fatter－fattestwet－wetter－wettest5)多音节和部分双音节的词需要在原级前＋more构成比较级,或＋themost构成最高级careful－morecareful－themostcarefulbeautiful－morebeautiful－themostbeautiful不规则变化：原级汉语意思比较级最高级good,well好的betterbestmany,much许多moremostbad,badly坏的，病的，坏地worseworstfar远的进一步的fartherfurtherfarthestfurthestold老的，旧的年长的，（岁数）大的olderelderoldesteldestlittle少的lessleast妙记顺口溜：两“好””两“多”两“坏”一“远”一“老”一“少”形容词和副词的比较级和最高级1)原级:常用结构as...as...

“和..….一样”eg.ZhangHongisastallasTom.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...eg.HeistallerthanI.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+最高级+of/in/among...

eg.Heisthefunniestinhisclass.他是他们班最有趣的。大多数形容词和副词都有三个级常用结构/句式Whoisthetallest

inourclass?Wangjiisthetallest

inourclass.Wangjiis__________anyotherstudentinourclass.tallerthanNostudentinourclassis___________Wangji.astallasFillintheblankswiththecorrectformsofthewordsinthebox.1.TheAmazonRiverisoneofthe_______riversintheworld.It’salittle_______thantheYangtzeRiver.2.Qomolangmais8,848.86meters_____.It’soneofthemost________placesforseriousmountainclimbers.3.Nooceanintheworldisas_____asthePacificOcean.4.AlthoughJapanis_______thanCanada,itis_______smaller.longestlongerhighpopularbigoldermuch4a1.Actionsspeaklouderthanwords.(事实胜于雄辩）2.Betterlatethannever.（迟做总比不做好）3.Honstyisthebestpolicy.（诚实总是上策