Unit7SectionA（GrammarFocus-4c）課件-人教版八年級(jí)英語下冊(cè)

Unit7What’sthehighestmountainintheworld?ReviewCanyoutranslatethefollowingsentences?長(zhǎng)江大約長(zhǎng)6,300千米。TheYangtzeRiverisabout6,300kilometerslong.黃河長(zhǎng)5,464千米。TheYellowRiveris5,464kilometerslong.ReviewCanyoutranslatethefollowingsentences?明朝的長(zhǎng)城大約有8,850千米長(zhǎng)。TheGreatWallinMingdynastyisabout8,850kilometerslong.珠穆朗瑪峰高8,844.43米，所以攀登起來很危險(xiǎn)。Qomolangmais8,844.43metershighandsoisverydangeroustoclimb.Presentation8,844.4330,0007,000eightthousandeighthundredandforty-fourpointfourthreethirtythousandCanyoureadtheselargenumbers?seventhousand61,021sixty-onethousandandtwenty-onePresentation大數(shù)字的表達(dá)和讀法大于1000的基數(shù)詞的表達(dá)法：①?gòu)臄?shù)字的右端向左數(shù)，每三位數(shù)加一個(gè)逗點(diǎn)；②第一個(gè)逗點(diǎn)前的數(shù)為thousand（千），

第二個(gè)逗點(diǎn)前的數(shù)為million（百萬），

第三個(gè)逗點(diǎn)前的數(shù)為billion（十億）。③讀的時(shí)候通常在hundred后加and，如果百位數(shù)為0，則在thousand

后加and。Presentation26742,674thousandandtwothousandsixhundredandseventy-fourhundred1.從數(shù)字右端向左數(shù)，每三位數(shù)加一個(gè)逗點(diǎn)；2.第一個(gè)逗點(diǎn)前的數(shù)為thousand（千）；3.讀的時(shí)候通常在hundred后加and。Presentation1835708918,357,089millionandeighteenmillion,threehundredandfifty-seventhousand,andeighty-ninethousand1.從數(shù)字右端向左數(shù)，每三位數(shù)加一個(gè)逗點(diǎn)；2.第一個(gè)逗點(diǎn)前的數(shù)為thousand（千）；第二個(gè)逗點(diǎn)前的數(shù)為million（百萬）；3.讀的時(shí)候通常在hundred后加and，如果百位數(shù)為0，則在thousand后加and。長(zhǎng)度、寬度、高度、深度的表示法：老虎路有200米長(zhǎng)，而且濕度很重。TigerPathis200___________andhasahighhumidity.我們走上三層樓，大概10米左右高。Wewalkupthreefloors,whichisaboutten_____________.那面鏡子有兩米寬。Themirroristwo_____________.

長(zhǎng)度、寬度、高度、深度的表示法，有一個(gè)專門的結(jié)構(gòu)，那就是“基數(shù)詞+單位詞+形容詞”。Practisemeterslongmetershighmeterswide教室有25英尺長(zhǎng)。Theclassroomis25feetinlength.這個(gè)箱子重9公斤。Theboxis9kilos.=Theboxis9kilosinweight.那座橋有三米高。Thebridgeis3metersinheight.2.除了以上的表示方法，有時(shí)也可以用“基數(shù)詞+單位詞+in+長(zhǎng)度或者重量的名詞”來表示長(zhǎng)度、寬度、高度、深度。若表示重量，可以用inweight結(jié)構(gòu)。PractiseGrammarFocusWhat'sthehighestmountainintheworld?Qomolangma.HowhighisQomolangma?It's8,844.43metershigh.It'shigherthananyothermountain.Whichisthedeepestsaltlakeintheworld?TheCaspianSeaisthedeepestofallthesaltlakes.DidyouknowthatChinaisoneoftheoldestcountriesintheworld?Yes,Idid.It'smucholderthantheUS.一.語法梳理

形容詞比較級(jí)/最高級(jí)變換規(guī)則(1)規(guī)則變化①一般在詞尾加_______②以字母e結(jié)尾的詞加______③以一個(gè)輔音字母結(jié)尾的重讀閉音節(jié)詞，先______該輔音字母，再加______.④以“輔音字母+y”結(jié)尾的雙音節(jié)詞，先改_____為_____,再加________.⑤多音節(jié)詞和部分雙音節(jié)詞，加________(2)不規(guī)則變化原級(jí)比較級(jí)最高級(jí)good/wellbad/badlymany/muchlittlefarfarther/furtherfarthest/furthest(3)句型越來越暖和__________________越來越受歡迎_______________越來越...____________________

和…一樣_____________________

不及，不如__________________________________________er/estr/st雙寫er/estyier/estmost注意：比較級(jí)是兩者之間比較，標(biāo)志詞是_________，

(....的多)_______________;(一點(diǎn)兒，稍微)_______修飾比較級(jí)

最高級(jí)是三者及三者以上比較，最高級(jí)前要加定冠詞_________

最...之一__________________

bestworstmostleastwarmerandwarmermoreandmore

popularmuchbetterworsemorelessThe+比較級(jí)，the+比較級(jí)as形容詞/副詞原級(jí)asnotas/so…..asless形容詞/副詞原級(jí)thanthanalotalittletheoneofthe+形容詞最高級(jí)+可復(fù)

謂語單數(shù)(三者或三者以上)the+最高級(jí)+of是對(duì)應(yīng)的范圍in是指一個(gè)廣泛的范圍上海是中國(guó)最大的城市.ShanghaiisthelargestinChina.那個(gè)短發(fā)的女孩是我們班最高的.Thegirlwithredhairisthetallestinourclass.形容詞最高級(jí)的常用句型Heisthetallestoftheseboys.(boys和he是對(duì)應(yīng)的,he就是boy)他是這些男孩中最高的。最重要的語言之一是英語。Englishisoneofthemostimportantlanguages.云南是中國(guó)最美的城市之一。YunNanisoneofthemostbeatifulcitiesinChina.

Oneof+the+最高級(jí)+名詞復(fù)數(shù)“最……的……之一”Fillintheblankswiththecorrectformsofthewordsinthebox.TheAmazonRiverisoneofthe________riversintheworld.It’salittle______thantheYangtzeRiver.2.Qomolangmais8,844.43meters_____.It’soneofthemost________placesforseriousmountainclimbers.3.Nooceanintheworldisas_____asthePacific

Ocean.4.AlthoughJapanis______thanCanada,itis______smaller.longestlongerhighpopularbigoldermuchbigmuchpopularlongoldhigh4aWritetwocomparisonsabouttwotopics.Writetruefacts.4bTwocities:BeijingandShanghaiBeijingisasmodernasShanghai.BeijingisbiggerthanShanghai,butShanghaihasalargerpopulationthanBeijing.BeijingShanghaiTwoanimals:MonkeyandDogAdogisbiggerthanamonkey.Amonkeyissmallerthanadog,butitclimbsatreefasterthanadog.Writefivequestionsusingcomparisons.Thenaskyourpartneryourquestions.Whatisthehighestbuildinginourcity?____________________________________________________________________________________________________________________________________________________Whatisthelongestriverinourcity?Whatisthelargestparkinourcity?Whatisthehighestmountaininourcity?Whatisthemostpopularcinemainourcity?4c

—Whowouldyouliketobeyourassistant,JackorDavid?—IfIhadtochoose,Davidwouldbethe______(good)choice.2.—Howwasyourmathexam,Nancy?—IthinkIdiditwell,althoughitwas_______________(difficult)thanthelastone.3.—Didyouhaveawonderfultimeattheparty?—Yes,it’sthe______________(exciting)oneI’veeverbeento.4.I’dliketoknowifLindaisthesecond______(tall)girlinherclass.5.Nowcomputersareverypopularandtheyaremuch________(cheap)thanbefore.6.—Lookatthatmodelship.—Oh,itlooks