会计学Presentationasnakeanegg1.第一次提到某人或某物时。Ihaveabook.2.泛指(fànzhǐ)某一类的人或物。Apandaisverylovely.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(kāitóu)的词前用“an”，以辅音音素开头(kāitóu)的词前”a“。如：anhour,anapple,anelephant,ausefulbook等。Look!Hereisapanda.Look!Hereisanapple.小试身手(shēnshǒu)：用a或an填空1.指上文提到过的人或物。如：Lucyboughtanewbike,thebikeisgreen.2.世界上独一无二的事物。如：thesunthemoon3.谈话双方(shuāngfāng)都知道的人或事物。如：Openthedoor,please.4.序数词和形容词最高级前。如：Sheisalwaysthefirsttogettoschool.5.乐器名词前用。如：playthepianoplaytheviolin6.定冠词与形容词连用表示(biǎoshì)一类人，加在姓氏的复数形式前表示(biǎoshì)“全家人”或“夫妇”。如：therich有钱人theyoung年青人theRreens格林一家7.某些(mǒuxiē)专用名词和习惯用语中用定冠词。theGreatWallbytheway8.用在方位名词前ontheleft/right小试身手：用适当(shìdàng)的冠词填空，为什么？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(biǎoshì)语言、学科、三餐、球类运动、棋类运动的名词前。3.在不可数名词前。3.表示星期、月份、季节(jìjié)、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。Practice：Fillintheblankswitha,anorthe.Millie:Let’sgotothePandaHousefirst.Daniel:Hereweare.Icansee(1)___pandathere.It’slyingonthegrass.Millie:Howcute!Ilovepandas.Look!There’s(2)____babypanda.It’ssosmall.Daniel:Yes.(3)_____babypandadoesn’tlooklikeitsmother.Millie:Nowlet’sgotoseesomelions.Daniel:Are(4)___lionsin(5)___openarea?Millie:No,theyaren’t.Theyarein(6)___verybigcage.Daniel:Isee.(Halfanhourlater)Daniel:Millie,here’s(7)____bridge.Whatcanyouseeacrossit?Millie:Oh,(8)____elephantisstandingoverthere.Daniel:Let’sgoacross(9)____bridgeandsee(10)____elephant.在必要的地方(dìfāng)用a,an,the填空。5.Dadoftengoesfishingin____summer.A:CanIhelpyou?B:I’mlookingfor___pairofshoes.PeopleinNanjingnowgotoworkby______underground.8.Whoisgoodatplaying______footballinyourclass?9._____boyinaredcoatismycousin.10.Iliveon____thirdfloor.11.Thereis___“h”,___“o”,___“u”intheword“hour”.12.Simonlikestoplay____pianobuthedoesn’tliketoplay___basketball.13.Beijingis____capitalofChina.over在……的正上方under在……的正下方(xiàfānɡ)above在……的上方(表面不接触)below在……的下方(xiàfānɡ)on在……的上面(表面接触)Canyoufillin