Unit1FriendsGrammar設計說明首先通過一些課文原句的復習導入本課時語法形容詞的比較級教學目標通過本單元的教學，讓學生達成以下目標：1.知識目標掌握詞匯：worse,worst,height,weight,sec.,competition,test,swimmer。2.能力目標(1)掌握形容詞比較級和最高級的構成。(2)學會正確使用形容詞比較級和最高級。3.情感目標讓學生感受語言的趣味性，學習更多比較級、最高級的用法。重點難點重點：形容詞比較級和最高級的構成難點：形容詞比較級和最高級的用法教學準備PPT課件授課時數1課時教學過程Step1Lead-inAskthestudentstoreviewsomesentencesandfindoutalltheadjectivesindifferentforms.1.ThebiggestoneinFifthStreet!(七年級下冊U1)2.ThebathroomisthebestplacetochatandwatchTV.(七年級下冊U1)3.TheSunisabout1,300,000timeslargerthantheEarth.(七年級下冊U5)4.Shelookeddownandsawherbodybecamesmallerandsmaller.(七年級下冊U6)5.Mydogisthecleverestanimalofall.(七年級下冊U8)6.MybestfriendisMax.Heisthetallestboyinourclass—almost1.75metres.(八年級上冊U1)7.SheisshorterthanIam.(八年級上冊U1)LetthestudentstrytodefinecomparativeandsuperlativeadjectivesStep2Presentation1.LetthestudentstrytocompareMayandBetty.MayisshorterthanBetty.=BettyistallerthanMay.May’seyesarebiggerthanBetty’s.=Betty’seyesaresmallerthanMay’s.May’shairislongerthanBetty’s.=Betty’shairisshorterthanMay’s.2.Askthestudentstoconcludetherules.Askthestudentstoreadthesesentencesandtrytofindtherulesaboutcomparative.Weuse“comparatives+than”tocomparetwopeopleorthings.A+形容詞的比較級+than+B當我們將兩個人或事物進行比較時，我們要用形容詞的比較級，表示“較……，更……一些，比……更……”。3.Askstudentstocomparethethreebags.￥50.00￥100.00￥150.00Thefirstbagisnice.Thesecondbagis____________thefirstone.Thethirdbagis____________ofall/thethree.Thethirdbagisnicerthan____________________/___________________.Thefirstbagisbig.Thesecondbagis_____________thefirstone.Thethirdbagis_______________ofall/thethree.Thefirstbagisexpensive.Thesecondbagis_________________thefirstone.Thethirdbagis____________________ofall/thethree.Answers:nicerthan;thenicest;theother(two)bags;anyotherbag；biggerthan;thebiggest；moreexpensivethan;themostexpensive4.Askthestudentstoreadthesesentencesandconcludetherulesofsuperlativeadjectives.Weuse“the+superlatives”tocomparethreeormorepeopleorthingsthe+形容詞的最高級+of/in...當我們將三個或三個以上的人或事物進行比較時，我們要用形容詞的最高級，表示“最……”,最高級前通常要加the。5.Askthestudentstochangetheadjectivesintotheircomparativesandsuperlativesandfindtherulesoftheforms.構成方法原級比較級最高級大部分單音節詞在詞尾加-er或-estlongfewcheaplongerfewercheaperlongestfewestcheapest以字母e結尾的詞，后加-r或-stnicesafelatenicersaferlaternicestsafestlatest以一個輔音字母結尾的重讀閉音節詞，雙寫最后一個輔音字母，再加-er或-estbighotthinbiggerhotterthinnerbiggesthottestthinnest以輔音字母+y結尾的雙音節詞，去掉y，再加-ier或-iestprettyunhappyheavyprettierunhappierheavierprettiestunhappiestheaviest多音節詞和部分雙音節詞，在詞前加more或mostnervousclearlydangerousfrightenedmorenervousmoreclearlymoredangerousmorefrightenedmostnervousmostclearlymostdangerousmostfrightened不規則變化good/wellbetterbestbad/illworseworstmany/muchmoremostlittlelessleastfarfarther（更遠的）farthestfurthestoldolder/elderoldest/eldestStep3Practice1.AskstudentstohelpDanielcompletethefollowingtablewiththecorrectadjectives.Answers:cleancleanercleanestthinthinnerthinnestshortshortershortestsadsaddersaddestcutecutercutestdifficultmoredifficultmostdifficulthappyhappierhappiestmoreinterestingmostinterestinglazylazierlaziestgoodbetterbestbigbiggerbiggestbadworseworst2.Danielhasmadeaprofileofhisclassmates.Readtheprofileandcompletehisnotes.MillieSandyAmyPeterKittySimonHeight（cm）157170160173155171Weight（kg）455044554053403830343635Drawingcompetition9/1010/109/105/106/108/10Englishtest10/108/109/106/108/107/101Simonistallerthan(tall)Sandy.2Peteris____________(tall)ofthesixstudents.3Sandyis_______________(heavy)Millie.4Peteris______________(heavy)ofthesixstudents.5Amongthesixstudents,Millieis____________(slow)swimmer.6Amyis_____________(fast)swimmerofthesixstudents.7Millie’sdrawingis______________________(beautiful)Peter’s.8Sandy’sdrawingis____________________(beautiful)inherclass.9Millie’sEnglishis______________(good)Simon’s.Millie’sEnglishis_____________(good)inherclass.Answers:2thetallest3heavierthan4theheaviest5theslowest6thefastest7morebeautifulthan8themostbeautiful9betterthan;thebestStep4Morestructuresofcomparativeadjectives.Introducewhenwecanusecomparativesandmorestructuresofcomparativeadjectives.1.通常情況下，我們用“比較級+than...”來引出比較的第二部分。Thepictureismorebeautifulthanthatone.這幅畫比那幅更漂亮。為避免重復，在than后常用that,those等詞來替代前面提到過的名詞。2.我們用“Which...+比較級,...or...”來表示在兩者中選擇。Whichisbigger,thesunorthemoon?太陽和月亮，哪個更大？3.Nowtheairinourhometownismuchbetterthanitwasbefore.現在我們家鄉的空氣比從前好得多。4.我們用“比較級+and+比較級”的結構來表示人或事物本身程度的變化（越來越……）。Hisshoesaredirtieranddirtier.他的鞋子越來越臟。Clothesaremoreandmoreexpensive.衣服越來越貴。moreandmore+原級,只用于以“more”構成比較級的形容詞,根據句意也可以用“less”構成降級比較。5.我們用“the+比較級...,the+比較級...”的結構來表示一方隨另一方變化而變化（越……越……）。Thesooner,thebetter.越早越好。Thekinderweare,theluckierwewillbe.越善良越幸運。6.我們用“the+比較級+of兩者”的結構來表示“在兩者中較……的一個”。Lilyistheshorterofthetwogirls.莉莉是這兩個女孩中比較矮的一個。Step5Morestructuresofsuperlativeadjectives.Introducewhenwecanusesuperlativesandmorestructuresofsuperlativeadjectives.1.我們用“the/形容詞性物主代詞+最高級”的結構來表示某人或事物最高程度（最……）。Peterishisoldestson.彼得是她的長子。此處最高級前不可用the2.我們用“the+最高級+比較范圍”表示某一范圍內“最……”。in+表示范圍的名詞或名詞性短語;of/among+表示范圍的人或物Peteristheoldestsoninhisfamily.彼得是他家中最大的兒子。Peteristheoldestsonof/amongthefivechildren.彼得是五個孩子中最大的一個。3.我們用“the+序數詞+最高級”來修飾最高級表示“第幾……”。Millieisthethirdtallestinherclass.米莉是她班里第三高的。TheYellowRiveristhesecondlongestriverinChina.黃河是中國第二長河。4.我們用“oneof+the+最高級+可數名詞復數形式”表示“最……的……之一”。Heisoneofmybestfriends.他是我最好的朋友之一。注意：比較級+thananyother+名詞單數=比較級+thantheother+名詞復數=最高級+比較的范圍Springisthebestseasonoftheyear.=Springisbetterthananyotherseasonoftheyear.=Springisbetterthantheotherseasonsoftheyear.春季是一年中最好的季節。Step6Homework1.Reviewgrammarandfinishtherelatedexercises.2.PreviewIntegratedskills&Studyskillson15.當堂達標Ⅰ.單項選擇。1.Mymotheris_______inourfamily.A.busiestB.thebusiestC.busierD.busy2.Thisappleis_______ofall.A.redderB.theredestC.thereddestD.reddest3.Whichpenis_______,thisoneorthatone?A.dearB.dearestC.thedearestD.dearer4.Kateis____thanalltheothergirls.Sheis____ofall.A.taller,tallestB.taller,thetallestC.thetallest,tallestD.tallest,thetallest5.Doyouknow_______girlofthethree?A.B.youngestC.D.youngerⅡ.用所給詞的適當形式填空。1.Theearthis__________(big)thanthemoon.Thesunis______________(big)ofthethree.2.MyHeartWillGoOnisoneof__________________(popular)songs.3.Whichdoyou