unit3section a 1

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1、Unit31a—2dUnit3Isthisyourpencil?acupanorangeakey1aLeadin—What’sthisinEnglish?—It’sakey.—Spellit,please.—K-E-Y.—What’sthisinEnglish?—It’s________.—Spellit,please.—_______.dictionaryeraser—What’sthisinEnglish?—It’sa/an…pencilboxpencilschoolbagPresentationwatchknife1.

2、pencil__2.pen__3.books__4.eraser__5.ruler__6.pencilbox__7.schoolbag__8.dictionary__egbhcfad1aMatchthewordswiththethingsinthepicture.—What’sthisinEnglish?—It’sa/an…WhataretheseinEnglish?They’re…aschoolbagthreeschoolbags—What’sthisinEnglish?—It’sa/an…WhataretheseinEn

3、glish?They’re…anerasertwoerasers—What’sthisinEnglish?—It’sa/an…WhataretheseinEnglish?They’re…apencilboxsixpencilboxesadictionarythreedictionariesakeyfourkeysaknifefiveknivesawatchthreewatches可数名词的复数形式。a.可以直接以数字计算的名词称为可数名词，可数名词有单数和复数两种形式。b.对可数名词来说，当表示一个人或事物时用单数形式；表示

4、两个或两个以上的人或事物时则用复数形式。c.单数名数名词变为复数名词有以下规则：Grammar1、一般情况下在名词后面加-s。pencil→pencils,sister→sisters,2、以辅音字母加y结尾的名词，先将y改为i，再加-es。family→familiesdictionary→dictionaries3、以s,x,ch,sh结尾的名词后加-es.watch→watches,box→boxes(盒子)4、以f或fe结尾的名词，先将f或fe改为v，再加-esknife→knives(小刀)shelf→shelve

5、s5、以o结尾的名词，有的加-es，有的直接加-s。tomato→tomatoes(西红柿)photo→photos6、特殊情况，无规则可循。man→men(男人)一、写出下列单词的复数形式1.parent________2.sister________3.boy_______4.this________5.that________6.photo________7.family_______8.bus_________9.watch________10.wife_________11.dish_______12.dog___

6、______parentssistersboysthesethosephotosfamiliesbuseswatcheswivesdishesdogsExercisesPeriod2Revision:Whatarethese/those?They’re…It’smypen.It’s______.(它是我的)That’sherkey.It’s______.(它是她的)Thosearehisbooks.They’re______.(它们是他的)mypen=mineherkey=hershisbooks=hisminehershi

7、sThisismyapple.Thisappleis_______.Thatisyourphoto.Thatphotois_______.Theseareherbooks.Thesebooksare______.Thosearehisdogs.Thosedogsare_______.mineyourshershisA:Isthisyourpencil?B:Yes,itis.It’smine.A:Isthatyourschoolbag?B:No,itisn’t.It’shis.A:Aretheseyourbooks?B:No,

8、theyaren’t.They’rehers.Listenandnumbertheconversations[1-3].3211bIsthis/thatyour…?Yes,itis.It’smine.No,itisn’t.It’shers/his.…?....schoolbagdictio