Unit7SectionAGrammarFocus-4c課件人教版八年級英語下冊

SectionAGrammarfocus~4cUnit7What'sthehighestmountainintheworld?學習目標1.學習形容詞、副詞的比較級和最高級。2.學習新單詞:thePacificOcean，ocean。nice—nicer—nicestOralpracticeDescribethepicturesbelow.Jim---youngKate---youngerbaby---youngestyoung—younger—youngestOralpracticeheavyheavy---heavier---heaviestOralpracticelovelylovely---morelovely---mostlovelyOralpractice形容詞、副詞的比較級和最高級的變化規(guī)則。

復習舊知識進入新課

大多數(shù)形容詞和副詞都有三個級。1）原級:常用結(jié)構(gòu):as...as...

像..….一樣

2)比較級

(用于兩者之間的比較),常用結(jié)構(gòu)：形容詞比較級＋than...3)最高級(用于三者或三者以上的比較)，常用結(jié)構(gòu):the+形容詞的最高級＋of/in...要求：學生討論總結(jié)本節(jié)課所學的知識，派代表發(fā)言（2分鐘）1）一般情況下，單音節(jié)或雙音節(jié)的形容詞（或副詞）比較級＋er

，最高級＋est2)以e結(jié)尾的詞，比較級＋r，最高級＋st

即可。3)以輔音字母＋y結(jié)尾的變y為i＋er或est。4）一輔重讀閉音節(jié)，詞尾輔音字母要雙寫4)多音節(jié)和部分雙音節(jié)的詞需在形容詞原級前＋more構(gòu)成比較級，＋themost構(gòu)成最高級。形容詞、副詞比較級和最高級規(guī)則變化要求：自己朗讀規(guī)則，盡量記住。(2分鐘）What’sthehighest

mountainintheworld?Qomolangma.HowhighisQomolangma?It’s8,844.43metershigh.It’shigher

thananyothermountain.Whichisthedeepestsaltlakeintheworld?TheCaspianSeaisthedeepest

ofallthesaltlakes.

DidyouknowthatChinaisoneoftheoldestcountriesintheworld?Yes,Idid.It’smucholder

thantheUS.GrammarfocusGrammarfocus1.—世界上最高的山峰是哪個？

—珠穆朗瑪峰。

—What’s____________mountainintheworld?—Qomolangma.Fillintheblanksaccordingtothetext.thehighest2.—珠穆朗瑪峰有多高？

—它高8844.43米。它比別的山都高。

—HowhighisQomolangma?—It’s_________________.It’s_______

thananyothermountain.8844.43metershighhigher3.—世界上最深的咸水湖是哪個？

—里海是世界上最深的咸水湖。

—Whichis___________saltlakeintheworld?—TheCaspianSeais_________________________________.thedeepestthedeepestofallthesaltlakes4.—你知道中國是世界上最古老的國家之一嗎？

—我知道。中國比美國古老。

—DidyouknowthatChinais______________________intheworld?—Yes,Idid.It’smucholderthantheUS.oneoftheoldestcountries用于倆者之間程度是否相同的比較。1.肯定形式用as+形容詞原級+as+比較成分，表示:和…一樣.2.否定形式用notso(as)+形容詞原級+as+比較成分，表示:前者不及后者。3.asmany/much(…)+as…表示前后數(shù)量一樣多。4.as+形容詞原級+as+用作比喻的名詞，表示:像…一樣…(多用于口語)形容詞原級1.形容詞比較級＋than+比較成分，表示：前者比后者...更（后面的動詞往往省略）2.否定的比較：less+形容詞原級+than+比較成分，表示：前者不及后者…3.表示倆者之中較用the+比較級+ofthetwo.4.比較級形容詞可以用alittle,much,even,still,far,verymuch,any,no,rather,alot(agreatdeal),alittle（abit）等修飾，表示某種程度，但不可用very修飾。形容詞的比較級(用于兩者之間的比較):三者或三者以上相比，表示最高程度時，用“the+最高級”的結(jié)構(gòu)表示。這種句式一般常有表示比較范圍的介詞短語。(in/of/among..)例如：ZhangHuaisthetallestofthethree.最高級的用法用代詞的所有格也可表示范圍。eg:Youaremyfondeststar.你是我最喜歡的明星。2.最高級可被序數(shù)詞以及much，byfar，nearly，almost，bynomeans，notquite，notreally，nothinglike

等詞語所修飾。例如：Thishatismuchthebiggest.Howmuchdidthesecondmostexpensivehat?3.表示“最高程度”的形容詞，如excellent，extreme，perfect等，沒有最高級，也不能用比較級。4.形容詞最高級修飾作表語或介詞賓語的名詞、代詞時，被修飾的詞往往省略。e.g.Heisthetallest(boy)inhisclass.5.作狀語的副詞最高級前可以不加定冠詞。e.g.Ofalltheboyshecame(the)earliest.5.最高級考點說明：形容詞的最高級前必須加the；副詞的最高級前省略the。①范圍問題e.g.Tomisthetalleststudentintheclass.

②“......之一”問題e.g.Beijingisoneofthebiggestcitiesintheworld.③“the+序數(shù)詞+最高級”e.g.Ithinkheisthesecondtallestboyinhisclass.3.最高級的其他表達：e.g.Tomisthetalleststudentintheclass.Tomistallerthananyotherstudentintheclass.Tomistallerthanalltheotherstudentsintheclass.NootherstudentsaretallerthanTom.Nostudentinourclassisas

tallasTom.Fillintheblankswiththecorrectformsofthewordsinthebox.bigmuchpopularlongoldhigh1.TheAmazonRiverisoneofthe_______

riversintheworld.It’salittle_______ thantheYangtzeRiver.2.Qomolangmais8,844.43meters_____. It’soneofthemost________placesfor seriousmountainclimbers.longestlongerhighpopular4a3.Nooceanintheworldisas_____as thePacificOcean.4.AlthoughJapanis_______than Canada,itis_______smaller.bigoldermuch太平洋n.

大海；海洋Writetwocomparisonsabouttwotopics.Writetruefacts.Tworivers:_________________and___________________________________________________________________________________________________________________________________________________________________________________________e.g.4bTheYangtzeRiverisalmostaslongastheAmazonRiver.TheAmazonislongerthantheYangtze,buttheYangtzeRiveristhelongestriverinChina.theYangtzeRivertheAmazonRiverWritefivequestionsusingcomparisons.Thenaskyourpartneryourquestions.1._________________________________2._________________________________3._________________________________4._________________________________5._________________________________e.g.4cWhatisthehighestbuildinginourcity?Whatisthebusiestbusstationinourcity?Whatisthelargestshoppingmallinourcity?Whatisthebiggestparkinourcity?Whatisthelongestroadinourcity?Discussion:1.Hainanisaverylargeisland.It’sthesecond____islandinChina.A.largeB.larger

C.largest2.Anelephantis_____thanahorse.

muchheavy

B.muchheavier

C.heaviest

學以致用CB3.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.slowlyCB5.ThisplaceisnotbigenoughforLucy’sbirthdayparty.Weshouldfinda_____one.

big

B.small

C.bigger

D.smallerC用所給的詞的適當形式填空：1.Thiscoatis

(expensive)thanthatone.2.Nancyjoins

(few)clubsthanI.3.MissGaosingsas

(good)asMissYang.(同義句)Henryisthesame

(tall)asJohn.4.Maryis

（good）atmaththanherdesk-mate.5.The

(old)ofthetwomenismyuncle.moreexpensivefewerwelltallbetterolder用所給的詞的適當形式填空：6.Whoruns

(fast),Lucy,LilyorMary?7.TheYellowRiverisoneof

(long)riversinChina.8.Iamalittletallerthan

.Andmyhairislongerthan

.(you)9.Sheis

inthis

film.(interest)fastestlongestyouyoursinterestedinteresting1.WearegoingtotheGreenRestaurantforlunch.(就劃線部分提問)____________yougoingforlunch?2.Samistheshortestinhisclass.(改為同義句)Samis________than_________studentinhisclass.Samis_______than__________studentsinhisclass.Samis_______than______________inhisclass.3.HowdoyoulikeScreenCity?(改為同義句)_______doyou__________ScreenCity?WhereareshorteranyotherWhatthinkofshortertheotheranyoneelseshorter練習：改寫句子二、同義句轉(zhuǎn)換

1.FlatAismoreexpensivethanFlatBFlatBis_______________thanFlatA.