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1、名词单复数和句型abookbooksThatisabook.Thisisabook.Thisisanorange.Theseareoranges.Thatisherpencil.Thoseareherpencils.Thesearemyerasers.Thoseareyourpencilsharpeners.1.一般直接加s，如pen—pens,eraser—erasers,book—books.2.以o.s.x.sh.ch.结尾的加es,如watch---watches.3.以辅音字母加y结尾的，变y为i再加
2、es,如family---families,dictionary--dictionaries.4.以f或fe结尾的变f或fe为v再加es，如knife(小刀)—knives.5.部分以“o”结尾加es如potatoes(土豆）tomatoes（西红柿）其他加s,如photo--photos可数名词复数：be动词表示“是”，有三个：am,is,are.我（I）用(am),你(you)用(are),is连着他(he)、她(she)、它(it),单数跟is后，复数全部都用are.单数复数thisthatis/amth
3、esethoseareThis___mysister.That____hisbrother.She_____hisaunt.He_____myuncle.These____herparents.Those____herfriends.They_____myfamily.is,are?isareisisisareare把下列句子单数变成复数：1.Thisisabook.2.Thatisanorange.3.Thisismypencil.4.Thatisherquilt.5.Isthisyourwatch?6.Is
4、thathisdictionary?7.Itismymap.8.That’shisring.Thesearebooks.Thoseareoranges.Thesearepencils.Thoseareherquilts.Aretheseyourwatches?Arethosehisdictionaries?Theyaremaps.Thosearehisrings.Isthathispencilcase?Yes,itis.No,itisn’t.Isthisyourpencil?Aretheseyourkeys?Y
5、es,theyare.Arethoseherpens?No,theyaren’t.A:Aretheseyour……?A:Arethoseyour….?B:Yes,theyare.B:No,theyaren’t.变为疑问句：1.Thisismyclock.2.Thatisyourring.3.Theseareherbooks.4.Thosearehisoranges.5.Thosearemybackpacks.Isthisyourclock?Isthatyourring?Aretheseherbooks?Aret
6、hosehisoranges?.Arethoseyourbackpacks?6.Heismysister.7.Sheishismother.8.Ia6.Heismysister.7.Sheishismother.8.IamJeff.mJeff.6.Heismysister.7.Sheishismother.8.IamJeff.6.Sheismysister.7.Heishisbrother.8.IamJeff.smother.8.IamJeff.Issheyoursister?Ishehisbrother?Ar
7、eyouJeff?把下列句子翻译成英语：1.这是他的铅笔。2.那个是你的文具盒吗？3.那些是你们的桔子吗？4.这些不是他的地图。5.那些是他的字典吗？6.这些是我的削笔刀吗？7.那些是她的手表吗？8.它是我的学校。Thisishispencil.Isthatyourpencilcase?Arethoseyouroranges?Thesearenothismaps.Arethosehisdictionaries?Arethesemypencilsharpeners?Arethoseherwatches?Itism
8、yschool.Exercise１．－IsGinayourfriend?－Yes,_____is.a.Sheb.hec.Ginad.it2.－Howisyourfather?－____isOK,thanks.Sheb.Hec.Itd.I3.－IsAlice____sister?－No,sheisn’tmysister.Sheismyfriend.Herb.hisc.yourd./Thi
