判断一个单词用a还是用anppt课件

.,7下GrammarAUsinga,anandthe,.,Warmup,WhatcantheyseeinSunshineZoo?,.,asnake,alion,atiger,agiraffe,Lead-in,.,anegg,anumbrella,anorange,anEnglishbook,.,1.第一次提到某人或某物时。Ihaveabook.2.泛指某一类的人或物。Apandaisverylovely.,不定冠词a/an的用法,.,判断一个单词用a还是用an，是根据其读音，而不是根据其首字母。以元音音素开头的词前用“an”，以辅音音素开头的词前”a“。如：anhour,anapple,anelephant,ausefulbook等。Zxk,.,Theyalsoseegiraffeandelephant.giraffehaslongneck.elephanthaslargeears.earsarelikeopenfans,a,an,The,a,The,The,.,小试身手：用a或an填空,_lion_bird_orange_“L”_giraffe_oldman_“u”_umbrella_interestingbook_hour_honestboy,a,a,an,an,an,an,an,a,a,an,注意：an是放于元音音素前，而不是元音字母前。,an,.,Itis_.,Thepandaiseatingbamboo.,apanda,.,Itis_.,Themonkeyiseatinganapple,amonkey,.,定冠词(the),1.用于上文提到过的人或事物。,eg.Iwanttohaveafashionshow.WherecanIhavetheshow?,2.用于谈话双方都知道的人或事物，表示“这/那个”。,eg.Whosbehindthedoor?Lookattheblackboard.,.,4.用于乐器名词前。,5.用于某些adj.前表示一类人或事物。,eg.playthepiano,playtheviolin,playtheguitar,eg.thepoor/rich,theold/young,3.用于世界上独一无二的事物。,eg.thesun,themoon,theearth,theworld,theGreatWall,theSummerPalace,.,7.用于序数词、adj.最高级前。,eg.Hesthethirdchildofhisfamily.Iwanttogotothebiggestcinema.,6.用于姓氏复数前，表示“夫妇/一家人”。,eg.TheWhitesoftenhaveapartyinthegarden.,8.用于一些固定短语中。,hefront/middleof,inthemorning,atthesametime,inthecentreof,.,Funinthezoo(P47),1a,2a,3The,4the,5an,6a,7a,8an,9the,10the,.,1.名词前已经有指示代词（this,that,these,those）、形容词性物主代词（my,his,our）或名词所有格等限定词。2.表示语言、学科、三餐、球类运动、棋类运动的名词前。,不用冠词的情况,.,3.表示星期、月份、季节、某些节日的名词前。4.表示人名、国名、称呼语或头衔等专有名词前。5.某些固定短语中。bybike,bybus,atfirst,atwork,onfoot,gotoschool,gotobed,等。,.,在必要的地方用a,an,the,填空。,1.WhereisPeter?Heisntat_school.2.Thereis_orangeinthefridge.3._pencilonthedeskbelongstoSandy.4.Ihave_newbike.Iclean_bikeeveryday.,an,The,a,the,Exercise,.,5.Dadoftengoesfishingin_summer.A:CanIhelpyou?B:Imlookingfor_pairofshoes.PeopleinNanjingnowgotoworkby_underground.8.Whoisgoodatplaying_footballinyourclass?9._boyinaredcoatismycousin.,a,The,.,10.Iliveon_thirdfloor.11.Thereis_“h”,_“o”,_“u”intheword“hour”.12.Simonlikestoplay_pianobuthedoesntliketoplay_basketball.13.Beijingis_capitalofChina.,the,the,the,a,an,an,.,1.Thisis_orange,_orangeisorange2.Englishis_usefullanguage.3.Mybrotheris_usualboybut_honestboy.4.Heisholding_umbrella.5._maninredishisfather.Hesat_dinner6.Whois_strongestand_mostfriendly?7._girloverthereis_universitystudent.8.Ihave_cat._catsnameisMimi.9.Mondayis_seconddayofaweek.10_sunisbiggerthan_moon11.Ilikeplaying_basketballand_piano.12.Hewasbornin_May.13.Isaw_oldmanpassbyand_oldmanlookedsad.,antheaaananThe/thetheTheaaThetheThethe/the/anthe,.,Goodbye!,.,GrammarBPrepositionsofplace方位介词,方位介词常用来表示物体的位置,.,Westudy_schooleveryday.,Tomlives_WashingtonD.C.,theUSA.,at,in,.,along,Millieiswalking_theroad.,along,Acatissleeping_thebalcony.,on,.,up,down,Kittyisclimbing_thehill.,up,Danieliswalking_thestairs.,down,.,Hoboiswalking_thetable.,around/roundprep.围绕，在周围,around/round,.,from,to,Amyiswalking_thesofatothewindow.,from,Sandyisgoing_thelibrary.,to,.,Thefootballfieldisthelake.,nexttoprep.在隔壁,nextto,.,inside,outside,Thefirstbearis_thebox.Thesecondbearis_thebox.,inside,outside,.,Somepeoplearestanding_thespring(喷泉).,infrontof,Therearesomefruits_theboy.,behind,.,across,Simonisswimming_thepool.,across,through,Atrainisgoing_atunnel.,through,.,over,Eddieisjumping_thechair.,over,Aboyislying_thetree.,under,.,Thereisabookshelf(书架)_mydesk.,above,Thesofais_thosetwopictures.,below,.,Thebankis_thehotelandtherestaurant.,between,Therearesomebutterflies_theflowers.,among,.,on,over/above,infrontof,behind,ontheleftof,ontherightof,under/below,Prepositionsoftheplace(方位介词),.,over在的正上方under在的正下方above在的上方(表面不接触)below在的下方on在的上面(表面接触),over,under,above,below,on,Doyouknowthesewords?Letslearnthemtogether.,.,Canyoufillintheblankswiththeseprepositions.,1.Thereisaface_thedesk.2.Themoonis_thedesk.3.Thesunis_thedesk.4.Icanseeastar_thedesk.5.Thereisatree_thedesk.,desk,over,above,under,below,on,.,.,.,Theflowerareinfrontoftheshop.Thetreesarebehindtheshop.Theshopkeeperisinsidetheshop.,Lookandsay,.,Theboyisoutsidetheshop.Thefoodisabovethedrinks.Thedrinksarebelowthefood.Thesignisoverthebench.Thedogisunderthebench.,.,Theresabeautifullakeinthepark.Look!Twoboysarerowingaboat(1)_thelake.(2)_thelaketheresafootballfield.Someboysareplayingfootball(3)_it.,Beside,Inthepark,on,on,.,(4)_thefootballfield,therearetwotrees.Ontheleft,abirdissinging.(5)_onetree.Ontheright,twoboysaresitting(6)_theothertree.(7)_thetwotrees,threegirlsarechatting(8)_thebench.,Infrontof,Between,in,under,on,.,Inthepark(P48),1.on,2.Beside/Nextto,3.on,4.Infrontof,5.in,6.under,7.Between,8.on,1ontheleft在左边2ontheright在右边3chatonthebench在长椅上聊天,.,overunderabovebelowinsideoutsideinfrontofbehindontheleft(of)ontheright(of),nextto=beside,inthemiddleof,inthecentreof,in,on,at,opposite,near,betweenand.,inthefrontof,表示方位的介词,.,Test()1.Weliveon_thirdfloorthetallbuilding.A.aB.anC.theD./()2.Ilikeplaying_basketball,whilemysisterlikesplayingthepiano.A.aB.anC.theD./()3.Thereareabout365daysin_year.A.aB.anC.theD./,C,D,A,.,()4.-Whatdoyouwanttobewhenyougrowup?-Iwanttobe_socialworker.Manypeopleneedourhelp.A.aB.anC.theD./()5._GreensarepreparingforthecomingThanksgivingDay.A.aB.anC.theD./,A,C,.,()6.-Whyareyoustanding,Alice?-Icantseetheblackboardclearly.Twotallboysaresitting_me.A.behindB.nexttoC.besideD.infrontof()7.Whatasunnyday!Letsgoboating_thelake,shallwe?A.onB.inC.overD.above,D,A,.,1.Thefootballis_thedoor,soIcantseeit.2.Dontstand_us,orwecantseethefilmclearly.3.Thereisanelectricfan_thedesk.4.Look!Yourrubberis_thechair.Pickitup.5.Themoonisnow_thetrees.,behind,infrontof,ab