七年级上册名词单数变复数ppt课件

名词单数句子变复数句子,.,2,Thisisanapple.,Thatismysister.,.,3,be动词表示“是”，有三个：am,is,are.我（I）用am,你(you)用are,Is用于他(he)、她(she)、它(it),单数后跟is,复数人称全部都用are.,单数,复数,weyoutheythesethose,Iyouhe/she/itthisthat,amareisisis,areareareareare,.,4,Thisisanorange.,Theseareoranges.,Thatisapencil.,Thosearepencils.,.,5,Thisismygrandfather.Thisismygrandmother.,Thesearemygrandparents.,Thisismymother.Thisismyfather.,Thisismybrother.Thisismybrother,too.,Thesearemyparents.,Thesearemybrothers.,.,6,把下列句子单数变成复数：,1.Thisisabook.,2.Thatisanorange.,3.Thisismypencil.,4.Thatisherquilt.,5.Isthisyourwatch?,6.Isthathisdictionary?,7.Itismymap.,8.Thatshisring.,Thesearebooks.,Thoseareoranges.,Thesearemypencils.,Thoseareherquilts.,Aretheseyourwatches?,Arethosehisdictionaries?,Theyaremaps.,Thosearehisrings.,.,7,把下列句子变成复数。1.Thisismysister.2.Thisishercousin.3.Thatishisbrother.4.Thatismygrandparent.把下列句子变成单数。1Thesearemyfriends.2.Thosearehisparents.3.Thosearehersisters.4.TheseareLiLingsbrothers.,Thesearemysisters.Thesearehercousins.Thosearehisbrothers.Thosearemygrandparents.Thisismyfriend.Thatishisparent.Thatishersister.ThisisLiLingsbrother.,-Whatarethese?,-Whatsthis?,-Itsapen.,-Theyarepens.,-Whatarethose?,-Whatsthat?,-ItsanEnglishbook.,-TheyareEnglishbooks.,.,10,backpacks,watches,oranges,pens,-Whatrethese?-Theyre.,.,11,maps,cases,keys,-Whatrethose?-Theyre.,名词单数变复数(一)规则变化:1.加s,2.加s,x,ch,sh结尾的名词加es,3.以辅音字母加y结尾的名词,先改y为i,再加es,(mothers,fathers,sisters,brothers),(buses,boxes,watches),(family-familiesdictionary-dictionaries),区别keykeysboy-boys,(二)不规则变化:,4.单复数同形(不变):sheep(绵羊)deer(鹿)fish(鱼),2.man,womanmen,women,1.加es:potatoes(土豆)tomatoes(西红柿),Chinese(中国人)Japanese(日本人),6.ooee：foot(脚)tooth(牙齿)goose(鹅),5.以f/fe结尾的,变f为v,再加es,wife(妻子)knife(小刀)shelf(架子)leaf(叶子)wolf(狼),3.child（孩子）children,（男人，妇女）,.,14,名词单数变复数后s/es的读音1.在清辅音后读/s/2.在元音和浊辅音后读/z/3.在/s/z/t/d/后读/iz/4.在/t/后读/ts/，在/d/后读/dz/,desksmaps,brotherspens,classes,watches,oranges,cats,friends,.,15,pendeskkeyboxknifecardorangeboyfriendparentmotherfathersisterbrothersondaughtercousinfamilychildmanpencilcasesheep,s,s,s,s,es,knives,s,s,s,s,s,s,s,s,s,s,s,families,children,men,s,sheep,句子单数变复数Thisisabook.Thatisaneraser.Itisaredapple.Iamaboy.He/Sheisateacher.Whatsthis?,Thesearebooks.Thoseareerasers.Theyareredapples.Weareboys.Theyareteachers.Whatrethese?,thisthatIyouhe/she/itam/is,these,those,we,you,they,are,单数复数,.,18,一、写出下列单词的复数I-2.am-3.he4.pencil-5.watch-6.dictionary-7.man-8.it-9.parent-10.boy,we,are,they,pencils,watches,dictionaries,men,they,parents,boys,.,19,二、句型转换1.Thisismymother.,1）变否定句2）变一般疑问句，并作肯定回答,Thisisnotmymother.Isthisyourmother?Yes,it/sheis.,.,20,2.Thatisacar.,1）变否定句2）划线提问3)变复数句,Thatisnotacar.Whatsthat?Thosearecars.,.,21,3.ThatsanEnglishdictionary.,1）变否定句2）变一般疑问句，并作否定回答,ThatsnotanEnglishdictionary.IsthatanEnglishdictionary?No,itisnt.,.,22,4.HerfamilynamesSmith.5.Myjacketislightblue.6.is,that,brother,my,Dave组词成句,划线提问,划线提问,Whatsherfamilyname?Whatcolorisyourjacket?Thatismybrother,Dave.,句型转换1.Whatsthis?复数,Whatrethese?,2.HesaChineseboy.复数,TheyreChineseboys.,3.Thisisabike.否定句复数句一般疑问句，并作肯定回答,Thisisnotabike.Thesearebikes.Isthisabike?Yes,itis.,4.Thatismybrother.,否定句一般疑问句，并作否定