Unit7SectionAGrammarFocus4c语法课件人教版英语八年级下册

Unit7What’sthehighestmountainintheworld.?SectionA(GF-4C）通过本课的学习，学生能够：①掌握如何询问及表达具体事实的典型句型。②能使用形容词和副词的比较级和最高级描述事物之间的区别。③了解我国的悠久历史、灿烂文化和大好河山。LearningGoals_____________________________________________________________________

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1.登山2.密集的云层3.极度寒冷的天气4.大风暴(暴风雪)5.吸入；吞入6.冒生命危险7.挑战自己8.面对困难RevisionTranslatethephrases.thickcloudsmountainclimbingfreezingweatherheavystormstakeinriskone’slivesinthefaceofdifficulties

challengeoneself_____________________________________________________________________

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9.放弃做某事10.实现梦想11.自然的力量12.延伸；贯穿；延绵13.登上山顶的第一人14.登山15.世界上最危险的

运动之一RevisionTranslatethephrases.achievedreamsrunalongforcesofnaturerunalongthefirstpersontoreachthetoponeoftheworld’smostdangeroussports

climbthemountain①

问深度：Howdeepis/are...?

HowdeepistheWestLake?②

问长度：Howlongis/are/...?

Howlongistheriver?③

问高度：Howhighis/are...?

Howhighisthedoor?④

问宽度:Howwideis/are...?Howwideisourclassroom?如何对物体的长度、高度、宽度和深度提问？8848.861532.7Whichmountainishigher,QomolangmaorMountTai?QomolangmaishigherthanMountTai.Qomolangmaishigherthananyothermountainintheworld.Qomolangmaisthehighestmountainintheworld.比较级最高级Adj&AdvRevisionWatchandtalk

FreetalkSupposePeteristhetalleststudentintheclass.Youcansay,PeteristallerthananyotherstudentintheclassGoodjob!Today,Let’slearntousethecomparisonswithadjectivesandadverbs.NostudentintheclassisastallasPeter.Peterismuchtallerthan...MikeisalmostastallasPeter.Heisoneofthetalleststudentsintheclass.Grammar一、同级比较的构成和运用(1)肯定形式as+原级+as(像……一样)(2)否定形式

not+so(as)+原级+as(不如…那样)同级比较Herunsas______(fast)asyou.Englishisnotso_______(difficult)asscience.fastdifficult1.同级比较：肯定句中一般用as...as...结构，意为“和……一样……”；否定句中经常用notso/as...as...，表示“不如……”。注意：as...as之间一定要用形容词或副词的原级。e.g.EnglishisnotsodifficultasRussian.英语不如俄语难。HerunsasquicklyasSuBingtian.他跑得和苏炳添一样快。形容词和副词的比较等级Grammar

1.规则变化(1)一般单音节词末尾加-er,-est.如hard－harder－hardest

(2)以不发音的e结尾的单音节词加-r,-st，nice－nicer－nicest；wide－wider－widest

(3)以辅音字母+y结尾的双音节单词，先把y变为i，再加-er,-estearly－earlier－earliest

(4)以一个辅音字母结尾的重读闭音节单词，

双写末尾字母再加-er,-est

red－redder－reddest

(5)部分双音节词或多音节词在原级前加more,most

interestingmoreinterestingmostinteresting2.不规则变化,需牢记

good－better－bestbad/ill－worse－worst

little－less－leastmany/much－more－most比较级最高级构成一、比较级最高级的构成2.最高级用法①

形容词最高级前需加“the“。最高级前有物主代词、指示代词、名词所有格、部分序数词等修饰时不用定冠词。副词最高级前可以不加。e.g.Youaremybestfriend.你是我最好的朋友。Herunsfastestinmyclass.他在我们班跑得最快。②

A+be+oneof+the+形容词最高级+名词复数，表示“A是……中最……之一”。e.g.Thelightbulbisoneofthemosthelpfulinventions.灯泡是最有用的发明之一。PresentationTheusageofthesuperlativeadjective1.最高级构成方法：

①规则变化：a.单音节和部分双音节

b.多音节词和部分双音节词②不规则变化PresentationTheusageofthesuperlativeadjective2.用法：

用于三者或三者以上人或物比较。

①the＋（序数词）＋最高级＋可数名词单数＋in+范围

Tomisthe(second)talleststudentinhisclass.

②the＋最高级＋可数名词单数＋of+数量

Kate’smooncakesarethemostdelicousofall.

③oneofthe＋最高级＋可数名词复数＋in/of/among...BeijingisoneofthebiggestcitiesinChina.④特殊疑问词＋(the)＋最高级，A，BorC？Whichseasonisthebest，spring，summer,autumnorwinter？

1.主语+谓语+比较级+than+比较对象“…比…如何”汤姆比他弟弟聪明。他跑得比汤姆快。Tomisclevererthanhisbrother.HerunsfasterthanTom.2.主语+谓语+the+比较级+ofthetwo

“主语是两者中较…的一个”杰克是兄弟二人中较瘦的一个。Jackisthethinnerofthetwobrothers.3.the+比较级…，the+比较级…“越…，就越…”你学习越努力，你越能取得好成绩。Theharderyoustudy,thebettergradesyouwillget.比较级的用法3.比较级用法①“形容词比较级+than...”，可以用“much,even,alot,any,still,abit,alittle,agreatdeal,far”等副词修饰形容词比较级。e.g.Theweatherofthisyearisalothotterthanthatoflastyear.今年比去年热很多。②

主语+动词+the比较级+ofthetwo.表示两者之间进行选择时，用句型：Which/Who+be/动词+比较级,AorB?e.g.—Tomisthetallerofthetwoboys.—Whoistaller,TomorJack?—汤姆是这两个男孩中较高的。—谁更高，汤姆还是杰克?③The+比较级，the+比较级，表示“越……越……”。e.g.Theharderheworks,thehappierhefeels.他越努力学习，越感觉快乐。④比较级+and+比较级,表示“越来越……”。e.g.Hestudiesharderandharder.他学习越来越努力。PresentationTheusageofthesuperlativeadjective2.用法：

用于三者或三者以上人或物比较。

⑤

比较级形式表最高级含义。（比较双方属于同一范围内）

a.比较级＋than＋anyother＋单数名词+范围

Heistallerthananyotherboyinhisclass.b.比较级＋than＋theother＋复数名词+范围比较级＋than＋therestof＋复数名词+范围比较级＋than＋anyoftheother+复数名词+范围Shegoestoschoolearlierthantheothergirlsinherclass.ChinaislargerthananyoftheothercountriesinAsia.c.比较级+than+anything/anyoneelseGeorgedidmoreworkthananyoneelse.Tomcaredmoreformoneythanforanythingelse汤姆最喜欢钱。PresentationTheusageofthesuperlativeadjective2.用法：

用于三者或三者以上人或物比较。

⑤

比较级形式表最高级含义。（比较双方属于同一范围内）

d.在使用这一结构时须要注意：使用这一结构来表达同一范畴中最

高级含义时，切记不可出现自身比较错误。

翻译句子：中国是所有亚洲国家中最大的一个。如果译为：

.①ChinaislargerthanallthecountriesinAsia.(×)②ChinaislargerthananycountryinAsia.(×)应译为：①ChinaislargerthananyothercountryinAsia.②ChinaislargerthananyoftheothercountriesinAsia.③ChinaislargerthantheothersinAsia.④ChinaislargerthananyoftheothersinAsia.形容词和副词的原级,比较级,最高级的用法比较级Thetaskismuchmoredifficult.Thetaskisalotmoredifficult.Thetaskisfarmoredifficult.Beoptimistic(乐观的)!Thetaskisjusta

littlemoredifficult.当表示一方超过另一方的“程度”时，可以用much,alot,alittle,abit,even,far等来修饰形容词比较级。注意：比较级不能用very,so,too等修饰。

Let’slearn形容词和副词的原级,比较级,最高级的用法最高级the+序数词

+最高级+可数名词单数+in/of短语该结构意为“……在……中是第几……的……”（从第二开始）。Russiais__________countryintheworld.(large)Canadais________________countryintheworld.(large)Chinais______________countryintheworld.(large)thelargestthesecondlargestthethirdlargest

Let’slearnPresentation如何对物体的长度、高度、宽度和深度提问？①

问深度：Howdeepis/are...?

HowdeepistheWestLake?②

问长度：Howlongis/are/...?

Howlongistheriver?③

问高度：Howhighis/are...?

Howhighisthedoor?④

问宽度:Howwideis/are...?Howwideisourclaasroom?Keywordsarehelpful.1.TheAmazonRiverisoneofthe_________riversintheworld.It’salittle________thantheYangtzeRiver.2.Qomolangmais8,848.86meters_______.It’soneofthemost__________placesforseriousmountainclimbers.3.Nooceanintheworldisas________asthePacificOcean.4.AlthoughJapanis_______thanCanada,itis________smaller.bigmuchpopularlongoldhighlongestlongerhighpopularbigoldermuch

太平洋Fillintheblankswiththecorrectformsofthewordsinthebox.Practice4a4bWritetwocomparisonsabouttwotopics.Writetruefacts.Tworivers:________________and______________________________________________________________________________________________________________________________________________________________theYangtzeRivertheAmazonRiver*TheAmazonislongerthantheYangtze,buttheYangtzeisthelongestriverinChina.

*TheYangtzeRiverisalmostaslongastheAmazonRiver.PresentationWritetwocomparisonsabouttwotopics.Writetruefacts.4bTwoanimals:________________and_______________________________________________________________________________________________________________________________________________________________Apandaisnotastallasanelephant.pandaelephantAnelephantismuchheavierthanapanda.Apandaisalotlighterthananelephant.Practice

1.FlatAismoreexpensivethanFlatB.FlatBis

thanFlatA.FlatBis

FlatA.FlatBisnot

FlatA.2.IprefermathstoEnglish.Ilikemaths

English.3.Heisthetalleststudentintheclass.Heis

intheclass.Heis

intheclass.lessexpensivecheaperthanasexpensiveasbetterthantallerthananyotherstudenttallerthantheotherstudents4cWritefivequestionsusingcomparisons.

Thenaskyourpartneryourquestions.

1._______________________________________2._______________________________________3._______________________________________4._______________________________________5._________________________________Whatisthehighestbuildinginourcity?

Whatisthebiggestsupermarketinourcity?

Whoisthetalleststudentinourclass?Who

istheshorteststudentinourclass?

Whosingsthebestinourclass?PresentationExercises1.Mybrotherhas____booksthanI.A.muchB.moreC.manyD.most2.Themoreyousmile,the_____youwillfeel.A.happyB.happierC.happilyD.morehappily3.Iknowyouareshorterthanyourbrothers，butyourun_________.A.morefaster B.fastestC.morefast D.fast4.MrSmiththoughttheCenturyParkwasthesecond_____inShanghai.A.largeB.largerC.largestD.verylarge5.

IthinkEnglishisas____asmat