冀教版八年级英语下册 （North America）Know Our World 新课件

NorthAmericaUnit7KnowOurWorld

Learningaims:

1.Will/Would/Couldyouplease…?2.Learnabouttherhythmoftheforeignsongs.3.Knowmoreabouttheworld’sgeography.Learningimportantpoints:1.Travelaroundtheworld.2.Howtolookupwordsinadictionary.3.Thewaywetravelaroundtheworld.预习检测用方框中所给词的适当形式填空。small language common speak1.Canadahasthe_________populationofthethreecountries.2.InCanadapeoplespeakdifferent___________.3.I’mthe______________girlofourfamily.4.Theboycan_________Spanish.smallestlanguagesmostcommonspeakNorthAmerica1.Whichcountryhasalargepopulation,CanadaorMexico?2.What’sthethirdmostcommonlanguageinCanada?3.WhichcountryhasthelargestpopulationinNorthAmerica?Listenandanswerthequestions.Mexico.China.TheU.S.Matchthestatementswiththecountriesaccordingtothelesson.StatementsPeopletheremainlyspeakSpanish.It’sthethirdlargestcountryinareainNorthAmerica.Over2millionpeoplespeakChinesethere.It’sthefarthestnorthinNorthAmerica.It’sthelargestcountryinpopulationinNorthAmerica.CountriesCanadaAmericaMexicoCompletethepassagewiththecorrectformsofthewordsinthebox.large live square SpainspeakcommonTherearethreemajorcountriesinNorthAmerica.Theycoverabout24million______kilometres.BothinAmericaandCanada,Englishisthe______________language,whileinMexico,peoplespeakmostly_______.IntheU.S.,over2millionpeople______Chinese.ThepopulationofAmericaismuch________thanthatofCanada.SomeMexicanpeopleleavetheircountryto_____andworkinAmerica.squaremostcommonSpanishspeaklargerlive1.Canadaisthebiggestofthethreecountriesinarea.inarea意为“在面积方面”，介词in表示“在……方面”。类似的用法有：insize意为“在大小方面”；inshape意为“在形状方面”。Eg.Ourtownisfivesquarekilometresinarea.我们城镇在面积上是五平方千米。Languagepoints.其次，area意为“面积；地域”，常用theareaof表示“……的面积”，intheareaof…意为“在……领域”。Eg.What’stheareaofyourhouse?

你的房子面积是多大？2.…thethirdmostcommonlanguageisChinese.“the+序数词+最高级+单数名词+范围”，表示“……是……的第几……”，注意形容词最高级前加基数词和序数词时意义不同。如：thetwolargestislandsofChina意为“中国最大的两个岛屿”；thesecondlargestislandofChina意为“中国的第二大岛屿”。根据句意及所给汉语提示，完成单词。1.Wewillflytothewest_________(海岸)ofAfrica.2.Thegoodbasketballplayercomesfrom________(俄罗斯).RussiacoastExerciseII.根据句意用方框中所给单词或短语的适当形式完成句子。

1.Heneeds_________thewordinthedictionary.2.—Areyougoingwithus?—_________.3.MysisterlikessingingEnglishsongs______.4.Haveyouever_________toJapan?5.Atlastthebus_________.startedtolookupSurealottravelledalot,start,sure,lookup,travelIII.补全对话。A.Isittheworld’slargestcontinent?B.MorethanthreebillionpeopleliveinAsia.C.Whereareyougoing?D.I’mlookingforAsia.E.Whatareyoudoinghere?F.TheyallspeakChinese.G.HowbigisAsia?W:Hello,Mr.Liu.L:Hello,WangYifei.(1)_________W:I’mlookingatthemapoftheworld.L:Themapoftheworld?Whatareyoulookingfor?W:(2)_________L:Isee.Haveyoufoundit?W:Yes,Ihave.Look!Hereitis.(3)_________L:Letmesee.Thecontinentcoversover44millionsquarekilometres.EDGW:It’ssobig.(4)_________L:Yes,itis.Therearemorethan40countriesinAsia.AndChinaisthebiggestcountryinareaandpopulation.W:Really?That’sgreat!IthinkthepopulationofAsiaislarge.L:Yes.(5)_________W:Thankyoufortellingmesomuch.L:You’rewelcome.BAHomeworkWriteareportaboutthecontinentoftheworld.ThankYouPlantingTreesUnit2PlantaPlant

1.Beabletousethewords:hole,large,root,seedling,cover,fill,dirt,pack,dust,storm,dirty,northern,bottom,digahole,fill...with...,bytheway,duststorm,alotof,turninto,forsure,remembertodosth.,inthebottomof...LearningTargets2.Toknowsomeimportantsentences:·Itmustbelargeenoughtoholdtherootsoftheseedling.·Nothingcanstopthewindbecausetherearenotmanytreesleft.·Alotofrichlandsinthenorthernareahaveturnedintodesert....3.TolearnsomethingaboutTreePlantingDayandknowhowtoplantatreeWordsandexpressionsholelargerootseedlingcoverfilldirtstormn.

洞adj.大的；巨大的n.

根n.

幼苗；秧苗v.覆盖n.盖子v.装满；充满n.

泥土；污物n.暴风雨dirtypackdustnorthernbottomdigaholefill...with...adj.不干净的；肮脏的v.堆积；压实；装（箱）n.

沙土；尘土；灰尘adj.北方的；北部的n.底部；最下部挖坑；挖洞用……填满bythewayduststormalotofturnintoforsureremembertodosth.inthebottomof...顺便说一下沙尘暴许多;大量变成肯定地；确定地记得去做某事在……底部翻译下列的短语。fill…with…bythewayduststormturnintointhebottomof…It’s+adj.todosth.

用…….填满顺便说一下沙尘暴变成在…….底部做某事怎么样(1)WhenisTreePlantingDayinChina?(2)Whatarethebasicstepsforplantingatree?THINKABOUTIT挖树坑Digahole解草绳Untierope树苗入坑PutthesaplingintheholeHowtoplantatree?一次培土Earthupforthe1sttime提苗Liftthesaplingslightly围填pileupeartharound浸透水Waterthesapling

给树上支架Setupsupportframe二次培土Earthupforthe2ndtimeIt’sMarch12.LiMingandhisclassmatesareonahillside.Theyareplantingtreesasaschoolproject.Aworkeristherehelpingthem.LiMing:Excuseme,sir.Wearediggingahole.Isitbigenough?Worker:Maybeyoushouldmaketheholealittlebigger.Itmustbelargeenoughtoholdtherootsoftheseedling.Listenandread.Presentation

LiMing:Isee.Thankyou.Worker:Now,puttheseedlinginside,covertherootsandfilltheholewithdirt.Thenpack

thedirtaroundthenewtreewithyourfeet.WangMei:OK.Bytheway,thereisanothergroupofpeopledownthehill.Aretheyalsocomingtoplanttrees?Worker:Yes.Manypeopleareworriedbecausetheenvironmentischanging,andtheywanttodosomethingtohelp.LiMing:Thesechangesareserious.Whenthere

isa

duststorminspring,itgetswindyand

dirtyeverywhere.WangMei:Ms.Liutoldusthewindblowsthedirtandthesandherefromthenorth.Nothingcanstopthethewindbecausetherearenotmanytreesleft.Worker:Exactly.Alotofrichlandsinthenorthernarea

haveturnedintodesert.

LiMing:Isupposetreeplantingisveryimportantwork.WangMei:Forsure.Ireallylikethisproject.It’salso

agreatwaytolearnaboutnature.Worker:Yes.It’sfunandimportanttoplantplants.Oh,andpleaseremembertoputalittlewater

inthebottomofthehole.

Readandanswer.1.WhatareLiMingandhisclassmatesdoingonMarch12?Theyareplantingtreesasaschoolproject.2.Whydomanypeoplecometoplanttrees?Becausetheenvironmentischangingandtheywanttodosomethingtohelp.3.Whatarethebasicstepsforplantingatree?Digahole,puttheseedlinginside,covertheroots,filltheholewithdirt,packthedirtaroundthetreeandputwaterinthebottomofthehole.1.liMingandWangMeiwerehavingapicniconafarm.()2.Theyaskedateacherforhelp.()3.LiMingsawanothergroupofpeopleonthehillside.()4.WangMeireallylikedtheproject.()1Readthelessonandwritetrue(T)orfalse(F).FTFTLet’sDoIt!Fillintheblankswiththewordsinthebox.Thenputthestepsforplantingatreeinthecorrectorder.bottomholearoundcoverrootsPutthe______oftheseedlingintothehole.Putalittlewaterinthe_______ofthehole._______therootsandfilltheholewithdirt.Packthedirt________thenewtreewithyourfeet.Digabig______enoughtoholdtherootsoftheseedling.rootsbottomCoveraroundhole225134Completethepassagewiththemissingphrases.A.theGreenGreatWallB.plantingmoretreesC.duststormsD.thenorthernpartTheGreenGreatWallwasbuiltacross_____________________ofthecountry.WhatistheGreenGreatWall?Itismadeupofstripsofhuman-plantedforest.thenorthernpartD.

3Eachyear______________blowalotofsoilofftheland.Thingsaregettingmoreandmoreserious.About3600squarekilometresofgrasslandaretakenbytheGobiDeserteveryyear.TheGreenGreatWallprojectstartedin1978.By_____________________,peopleholdbacktheexpansionofthedesertandraisenorthernChina’sforestcoverageby5%to15%.Bytheyear2050,_____________________willbeabout2800mileslong.B.plantingmoretreesA.theGreenGreatWall

C.duststormsWorkinpairs.Readthelessonandthepassageaboveagain.Whyshouldweplanttrees?Talkaboutitandlistatleastthreereasons.4LiMingandWangMeiareplantingtreesonahillside.Howtoplantatree?First,theydigaholeandmakesurethehole_____________toholdtherootsoftheseedling.Second,theyputtheseedlinginside,______therootsand_____thehole_____dirt.Thentheypackthedirtaroundthenewtree_____theirfeet.Atlast,theyputalittlewater______________thehole.Fillintheblanksandtrytoretellthetext.large

enoughfillwithcoverinthebottomofwithReadandtrytorecitetheconversationsin5-10minutes.Role-play1.Roleplayingroups;2.RoleplayinfrontoftheclassWe’llseewhichgroupdoesthebest.1.Itmustbelarge

enoughtoholdtherootsoftheseedling.（1）must表示肯定推测，意为“一定；肯定”。例：ThisbookmustbeJack's，becausehisname

isonitscover.这本书一定是杰克的，因为封面上有他的名字。（2）largeadj.大的，巨大的。常指面积或范围大，其反义词为small(小的)。

（3）enoughadv.足够地。修饰形容词或副词时要放在所修饰词的后面。例：Thisgirliscarefulenough.这个女孩足够的细心。Languagepoints2.Now,puttheseedlinginside,covertherootsandfilltheholewithdirt.(1)cover

v．覆盖。常用短语：cover…with…用……盖住……其被动语态结构为：becoveredwith…被……覆盖。例：Pleasecoverthepotwithapieceofpaper.请用一张纸盖住这口锅。(2)fill

v．装满；充满。常用短语：fill…with…用……装满……；befilledwith…被装满/充满……例：Hefilledthebottlewithwine.他用酒装满了那只瓶子。Thenewroadsandstreetswillbefilledwithmanycarsandbusessoon.

新的道路又将被很多公共汽车和小汽车塞满。3.Bytheway，thereisanothergroupofpeopledownthehill.

bytheway是固定搭配，意为“顺便说/问一下”。

常放在句首，用于在主要话题或交流中插入题外

的话或问题。例：Bytheway，howoldareyou？

顺便问一下，你多大了？4.Ms.Liutoldusthewindblowsthedirtandthesandherefromthenorth.此句中，us后面是一个省略了连词that引导的宾语从句。主句为一般过去时，宾语从句用相应的过去时态。但在英语中，如果宾语从句陈述的是客观事实、自然现象、科学真理等时，从句的时态不受主句时态的限制，用一般现在时。例：HeknewthattheYangtzeRiveristhelongestriverinChina.他知道长江是中国最长的河流。5.Nothingcanstopthewindbecausetherearenotmanytreesleft.此句是一个主从复合句。句中because引导原因状语从句。because表示直接的原因，常用来回答why引导的特殊疑问句。

【链接】其他用来引导原因状语从句的连词：①for引导的从句是对主句发生的动作一些补充说明，且不可位于主句之前。②since意为“既然”，引导的从句表示附带的原因，或者表示已知的、显然的理由，通常放在句首。③as所表示的原因语气最弱，只是对主句的附带说明，重点在主句。as从句通常放在主句之前。例：Iwenttoseehim,forIhadsomethingtotellhim.我去见他，因为我有事要告诉他。Sincewehavenomoney，wecan'tbuythatcar.既然我们没钱，就不能买那辆车了。Asitisraining，you'dbettertakeataxi.下雨了，你最好乘出租车。6.It'salsoagreatwaytolearnaboutnature.

awaytodosth.意为“做某事的一种方式/方法”。其中，不定式作way的后置定语。相当于awayofdoingsth.。例：It'sagoodwaytolearnEnglish.＝It'sagoodwayoflearningEnglish.这是一个学习英语的好方法。

Itis+adj.+for/ofsb.todosth.对于某人来说，做某事是……的。例：It'skindofyoutohelpmeyesterday.昨天你帮助了我，你真是太好了。7.

Oh，andpleaseremembertoputalittlewaterinthebottomofthehole.(1)remembertodosth.记得要做某事(此事还未做)。例：Remembertoclosethewindowwhenyouleavetheoffice.你离开办公室时，记得关窗户。(2)at/inthebottomof…在……的底部。例：IwanttotellyoufromthebottomofmyheartthatIamtrulysorry.我从心底想向你表示我真的很抱歉。

Exercises一、选择适当的单词或者短语填空。fillwithbythewayduststormturnintoforsurecoverinthebottomofdiglargenorthernThe_________oftenhappensinthe________area.duststormnorthernExercises2.Please_____theglass______milk.3.Ifyouonlyhavethename,youcannotconfirmtheidentity___________.fillwithforsure4.Allofuscan_____ourdreams_____practicalreality.5.Inoticedtherewasahole__________________hispail.inthebottomofturninto6.Youhave400wordsforeachquestion,___