英语语法-名词单数变复数

名词单数变复数,-Whatarethese?,-Whatsthis?,-Itsapen.,-Theyarepens.,-Whatarethose?,-Whatsthat?,-ItsanEnglishbook.,-TheyareEnglishbooks.,backpacks,watches,oranges,pens,-Whatrethese?-Theyre.,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）,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,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,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,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.,2.Thatisacar.,1）变否定句2）划线提问3)变复数句,Thatisnotacar.Whatsthat?Thosearecars.,3.ThatsanEnglishdictionary.,1）变否定句2）变一般疑问句，并作否定回答,ThatsnotanEnglishdictionary.IsthatanEnglishdictionary?No,itisnt.,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，并作否定回答,Thatisnotmybrother.Isthatyourbrother?No,it/heisnt.,5.Thesearedi