Unit+7+第3課時+Section+A【高效備課精研+知識精講提升】 八年級英語下冊 課件（人教版）

SectionAGrammarfocus-4cUnit7語法課What’sthehighestmountainintheworld?LearningAimsLearningAims知識目標(biāo)1.掌握詞匯Ocean,thePacificOcean等。2.掌握形容詞的原級、比較級和最高級的句式結(jié)構(gòu)。能力目標(biāo)1.能使用形容詞的原級、比較級和最高級對事物進行描述。2.歸納并掌握形容詞的原級、比較級和最高級用法、運用本單元語言目標(biāo)的能力。情感目標(biāo)通過討論家鄉(xiāng)之最、提升學(xué)生對家鄉(xiāng)的熱愛。ReviewLeadinLeadinJim---youngKate---youngerbaby---youngestyoung—younger—youngestOralpracticenice—nicer—nicestOralpracticeDescribethepicturesbelow.Leadinheavyheavy---heavier---heaviestOralpracticeLeadinlovelylovely---morelovely---mostlovelyOralpracticeLeadinDoyouknowtheseinterestingplaces?TheNile

isthelongestriverintheworld.Qomolangmais

thehighestmountainintheworld.

QomolangmaTheNileLeadinTheCaspianSea

isthebiggestlakeintheworld.TheSahara

isthebiggestdesertintheworld.TheSaharaTheCaspianSeaLeadinGeographicfacts地理常識thelongestriver(have)thebiggestpopulationthehighestmountainthebiggestcountrythebiggestdesertthebiggestsaltlakethebiggestoceanthebiggestcontinentAskandanswer-Whatislongestriver/thebiggestcountryintheworld?……-Whichcountryhasthebiggestpopulation?LeadinGrammarfocusGrammarfocusGrammarfocus1.What'sthehighestmountainintheworld?Qomolangma.2.HowhighisQomolangma?It's8,844.43metershigh.It'shigherthananyothermountain.3.Whichisthedeepestsaltlakeintheworld?TheCaspianSeaisthedeepestofallthesaltlakes.4.DidyouknowthatChinaisoneoftheoldestcountriesintheworld?Yes,did.It'smucholderthantheUS.PresentationGrammarfocus1.What'sthehighestmountainintheworld?Qomolangma.2.HowhighisQomolangma?It's8,844.43metershigh.It'shigherthananyothermountain.3.Whichisthedeepestsaltlakeintheworld?TheCaspianSeaisthedeepestofallthesaltlakes.4.DidyouknowthatChinaisoneoftheoldestcountriesintheworld?Yes,did.It'smucholderthantheUS.HowdeepHowbigHowlongdeeplonginsize=Qomolangmaisthehighestmountainintheworld.=Qomolangmaishigherthantheothermountains.=nomountainintheworldisashighasQomolangma.alotalittleevenGrammarfocus

規(guī)則變化

1)一般情況下，單音節(jié)或雙音節(jié)的形容詞/副詞比較級＋er，最高級＋est。如:clever—cleverer—cleverest

few—fewer—fewest

small—smaller—smallest等。形容詞、副詞的比較級和最高級規(guī)則變化和不規(guī)則變化Grammarfocus2)以e結(jié)尾的詞，比較級＋r，最高級＋st

即可。如：nice—nicer—nicest

cute—cuter—cutest

large—larger—largest3)以輔音字母＋y結(jié)尾的變y為i＋er或est

如:easy—easier—easiest

happy—happier—happiest

再如：early,busy,heavy,dirty,lazy也如此。Grammarfocus4)重讀閉音節(jié)，單輔音結(jié)尾的，雙寫這個輔音字母＋er

或

est的詞：①

fat—fatter—fattest

②thin—thinner—thinnest

③hot—hotter—hottest

④red—redder—reddest⑤wet—wetter—wettest

⑥big—bigger—biggest

Grammarfocus5)多音節(jié)和部分雙音節(jié)的詞需要在形容詞原級前＋more構(gòu)成比較級，＋themost構(gòu)成最高級。如：beautiful－morebeautiful－themostbeautiful又如:delicious,popular,important,interesting,expensive,creative雙音節(jié)的詞如:

careful－morecareful－themostcareful

useful－moreuseful－themostusefulGrammarfocus少數(shù)單音節(jié)詞也是這樣，如：pleased—morepleased—themostpleasedtired—moretired—the

mosttiredb)不規(guī)則變化：

good—better—best

well—better—best

bad—worse—worst

many/much—more—most

Grammarfocusfar—farther—farthest

(距離遠(yuǎn))

far—further—furthest

(程度深)old—elder—eldest

(長幼)

old—older—oldest

(年齡)Grammarfocus二、不規(guī)則形容詞的比較級最高級原級比較級最高級good/wellbetterbestmany/muchmoremostlittlelessleastill/bad/badlyworseworstfarfarther/furtherfarthest/furtheroldolder/elderoldest/eldest注：older一般指年齡大小；

Myfatherisolderthanmymother.elder指長幼關(guān)系(一般修飾名詞作定語);Myelderbrotherisadriver.farther指距離更遠(yuǎn)；further指抽像的.IwanttostudyEnglishfurther.furtherreadingGrammarfocus形容詞和副詞比較級的用法1.Whoruns

faster,heorshe?2.Heruns

fasterthanshe.3.Heruns

muchfasterthanshe.4.Hebecomes

healthierandhealthier.5.Themore

youexercise,

thehealthier

youwillbe.6.Sheis

lesshealthythanhe.Grammarfocus1.表示兩者之間的選擇,

可用“Which/Who…+比較，…or…?”.2.表示兩者之間的比較，通常用連詞than引導(dǎo)，表示“更······一些”．3.much/far/alot,even,still,alittle/abit…

修飾比較級,表示程度.Whoruns

faster,heorshe?Heruns

fasterthan

she.Heruns

muchfasterthan

she.Grammarfocus4.“比較級+and+比較級”表示“越來越……”5.“the+比較級,the+比較級”表示“越…,越…”

6.表示不及另一方時，用“l(fā)ess+原級+than…”(雙音節(jié)和多音節(jié)詞)Hebecomes

healthierandhealthier.Themore

youexercise,

thehealthier

youwillbe.Sheis

lesshealthythan

he.Heis

healthierthan

she.Shanghaiisbecoming

moreandmoremodern.Grammarfocus1.比較級+and+比較級越來越…2.the+比較級,the+比較級越…,越…3._______________youare,_________mistakesyouwillmake.(你越仔細(xì)，做錯的題目就越少）4.__________youeat,_________you’llbe.(你吃得越多,就越胖)5.Alicewriteswell.Marywrites_________________thanshe.(甚至更好）ThemorecarefulthefewerThemorethefatter1.Thegirlbecomes______________________.(越來越漂亮）moreandmorebeautiful2.Theweatherisgetting

_________________.

(越來越槽糕）worseandworseeven/stillbetterGrammarfocus1.表示三者或三者以上比較,可用”Which/Who…+最高級,…,…or…?”表示.2.最高級+of/among(同類比較)in…(范圍比較)4.oneof+形容詞最高級+名詞復(fù)數(shù)表示“最…之一”3.序數(shù)詞修飾最高級形容詞和副詞的最高級的用法Whois

thetallest,Tom,Mike,orJack?Tomis

thetallestof

thethree.Mikeis

thesecondtallest

studentinourclass.Jackis

oneofthetalleststudentsinourclass.Tomruns

(the)fastest

inourclass.GrammarfocusReviewPracticePractice1.Ourfamilyhasboughtacarsowecantravel_____thanbefore.

mosteasily

B.lesseasily

C.easily

D.moreeasily

2.Myfathertoldmeastorylastnight.Itis____oneI’veeverheard.

thefunniest

B.funniest

C.funnier

D.thefunnier

DAPractice3.The_____friendsyouhave,the____youwillbe.

A.more,happy

B.many,happy

C.more,happier

D.many,happier4.Whenheheardacryforhelp,heranoutas__ashecould.

A.hardly

B.quickly

C.finally

D.slowlyCBPracticeFillintheblankswiththecorrectformsofthewordsinthebox.bigmuchpopularlongoldhigh1.TheAmazonRiverisoneofthe_______

riversintheworld.It’salittle_______thantheYangtzeRiver.2.Qomolangmais8,844.43meters_____.It’soneofthemost________placesforseriousmountainclimbers.longestlongerhighpopular4a3.Nooceanintheworldisas_____as thePacificOcean.4.AlthoughJapanis_______thanCanada,itis_______smaller.bigoldermuchPracticee.g.Tworivers：_________________and________________________________________________________________________________________________________________________________________________Writetwocomparisonsabouttwotopics.Writetruefacts.

theYangtzeRivertheAmazonRiverTheYangtzeRiverisalmostaslongastheAmazonRiver.TheAmazonislongerthantheYangtze,buttheYangtzeisthelongestriverinChina. 4bPracticetheNiletheYangtzeRivertheYellowRiver6,6716,3005,464TheYellowRiverislong.TheYangtzeRiverisalot_______thantheYellowRiver.TheNileis__________ofallNoriverintheworldis_____long____theNile.=TheNileis

_____thananyotherriverintheworld.longerthelongestasaslongerPracticeMountTaiishigh.MountHuangisalittle

________thanMountTai.Qomolangmais____________ofall.QomolangmaMountHuangMountTai8,8481,8641,545Nomountainintheworldis_____high____Qomolangma.higherthehighestasasMakeasentence,using“anyother”PracticePractice

Writefivequestionsusingcomparisons.Thenaskyourpartneryourquestions.____________________________________________________________________________________________________________________________________________________________________________________Whatisthehighestbuildinginourcity?Whoistheoldestpersoninourcity?Whatisthemostpopularsupermarket…?Whatisthemostdeliciousfoodinourcity?Whereisthebusiestroadinourcity?4cReviewExercisesExercises1.Ourfamilyhasboughtacarsowecantravel_____thanbefore.

mosteasily

B.lesseasily

C.easily

D.moreeasily

2.Myfathertoldmeastorylastnight.Itis____oneI’veeverheard.

thefunniest

B.funniest

C.funnier

D.thefunnier

DAExercises3.The_____friendsyouhave,the____youwillbe.

A.more,happy

B.many,happy

C.more,happier

D.many,happier4.Whenheheardacryforhelp,heranoutas_______ashecould.hardly

B.quickly

C.finally

D.slowlyCBExercises二、同義句轉(zhuǎn)換

1.FlatAis