a,an,the的用法（一）a,an的用法1.a：用于辅音音素（不是辅音字母）开头的词前，表示单数的数量“一”。abookadesk2.an：用于元音音素（不是元音字母）开头的词前，表示单数的数量“一”。anappleabigappleanoldman3.元音字母：以元音字母Aa,Ee,Ii,Oo开头的单词基本都是以元音因素开头Uu较特殊4.辅音字母：26个字母中，除了5个元音字母，其他是辅音字母5.特殊情况：anumbrella（u发元音）ausefulenglishbook（u发辅音）anhour（h是辅音字母，但它不发音）练习一：用a,an,the填空_____book2._____apple3._____orange4._____uncle5._____eraser6._____mathbook7._____newbook8._____oldbook9._____teacher10.______English11.____hour12._____goodteacher13.____idea14.____goodidea15.____island16.____astronaut（二）the的用法1.一般用于特指：Thegirlismysister.那个女孩是我的妹妹。2.第二次出现：Thereisabookonthedesk.Thebookismine.书桌上有一本书，那本书是我的。3.世界上独一无二：themoon月亮theearth地球theGreatWall长城thesun太阳4.固定的词组：onthedesk在书桌上5.形容词最高级前：Jennyistheoldestgirlintheclass.在班里珍妮是年纪最大的女孩。练习二：选择()1.That’s_____island.Iliketogothere.A.aB.anC.the()2.Ihave___newbook.Jennyhas___oldbook.A.a/anB.an/aC.an/an()3.Thisis___orange.That’s____bigorange.A.a/anB.an/aC.an/an()4.YesterdayIstudiedEnglishfor____hour.A.anB.theC.a()5.Thisisabag.____bagisTom’s.A.AB.AnC.The()6.___manisLisa’sfather.AB.TheC.An()7.____GreatWallisinChina.AB.TheC.An()8.MyEnglishbookisin___desk.A.theB.anC./()9.Shehas___idea.It’sagoodidea.A.aB.anC.the练习三：a,an,the填空1.Tomwantstobe_____scientist(科学家).Hewantstogoto___moon.2.Jennyhas______uncleand_____cousin.3.Ihave_____eraser._____eraserisinmybag.4._____boyisTom’sbrother.5.Thebirdwashere______hourago.6.Thereis_____Englishbookonthedesk.______EnglishbookisTom’s.7.Ihave_____book.Itis_____Englishbook.Andithas_____goosstory._____bookisinmybag.8.Thereis_____catunderthetree._____catisplaying.一、选择正确的答案1.Iam___(a,an)student.2.Thereis____(a,an)elephantinthezoo.3.Youare____(a,an)goodboy.4.Ihave____(a,an)orange.5.MissGrantis____(a,an)uglyteacher.6.Thisis_____(a,an)newbook.7.Pleasetake____(a,an)umbrella.8.Close____(a,an,the)door,please.9.Myfatheris____(a,an)doctor.10.Thereis_____(a,an)orangeonthetable.11.Hegivesme_____(a,an)sticker.12.Whatis_____(a,an,the)biggestbirdintheworld?13.Iha