七年级上册--仁爱英语--U1T3名词单数变复数1ppt课件

.,Welcome!,.,可数名词单数变复数,.,WhatsthisinEnglish?,Itsanapple.,Whatarethese?,Theyaretwoapples.,.,-Whatarethese?,-Whatsthis?,-Itsapen.,-Theyarepens.,.,-Whatarethose?,-Whatsthat?,-ItsanEnglishbook.,-TheyareEnglishbooks.,.,toys,boxes,oranges,pens,-Whatarethese?-Theyre/Theyare.,.,maps,eggs,cars,-Whatarethose?-Theyre/Theyare.,.,单数,复数,可数名词,如何变化？,规则变化,.,1.一般情况下，直接在词尾加-s构成复数形式。,car,backpack,cars,backpacks,book,books,1.,.,name,pen,card,ruler,names,pens,cards,rulers,.,box,2.以s,x,ch,sh等结尾的名词，在词尾加-es构成复数形式。,boxes,class,classes,watch,watches,brush,brushes,2.,.,bus,buses,foxes,dishes,.,3.以“辅音字母+y”结尾的名词，应改y为i，再加-es。,family,families,comedies,3.,.,4.以“元音字母+y”结尾的名词，直接在词尾加-s构成复数形式。,boy,boys,day,days,4.,.,key,cities,strawberries,keys,.,5.以f或fe结尾的名词，先将f或fe变成v，再加-es构成复数形式。,knife,knives,half,halves,5.,.,wives,leaves,wolves,.,6.以o结尾的名词,表示无生命事物的名词，词尾加-s,表示有生命事物的名词，词尾加-es。,加-es的名词有:potato,tomato,hero,巧记:英雄爱吃土豆炖西红柿。,.,photo,photos,heroes,tomatoes,zoos,.,1.单复数同形的单词有：,Chinese,Japanese,fish,deer,sheep,不规,则,变,化,中日人民爱护鱼鹿羊,.,2.oo-ee,foot,feet,.,tooth,teeth,.,goose,geese,.,3.a-e,man,men,.,woman,women,.,4.以en结尾,child,children,.,5.固定用法,mouse,mice,.,thisthatIyouhe/she/itam/is,these,those,we,you,they,are,单数复数,.,你，敢挑战吗？,.,photo,photos,.,family,families,.,boy,boys,.,peach,peaches,.,sheep,sheep,.,wife,wives,.,man,men,.,wolf,wolves,.,tomato,tomatoes,.,people,people,人们,.,你，愿意超越吗?,.,Therearefour_(potato)onthetable.,potatoes,.,Mysisterhasthree_(knife).,knives,.,Doyouhaveany_(hobby)?,hobbies,.,Theyare_(policeman).,policemen,.,Alotof_(fish)areswimminginthewater.,fish,.,Sumup:,1.一般情况下,直接在名词词尾加-s.,2.以s,x,sh,ch结尾的名词,在词尾加-es.,3.以辅音字母加y结尾的名词，要变y为i再加-es.,5.以f或fe结尾的名词，先将f或fe变为v,再加-es.,6.以o结尾的名词,表示无生命事物的名词加-s,表示有生命事物的名词加-es。,4.以“元音字母+y”结尾的名词，直接在词尾加-s.,.,可数名词变复数不规则总结1.单复数同形2.oo-ee3.a-e4.以en结尾5.固定用法，如mouse-miceI-wehe/she-they,.,给下列可数名词加复数,bird-card-lady-orange-ruler-photo-friend-boy-watch-girl-case-cat-wife-tree-key-bed-hero-family-dictionary-question-leaf-party-cup-,birds,ladies,oranges,rulers,cats,boys,girls,cases,wives,watches,trees,keys,questions,beds,heroes,friends,families,dictionaries,photos,cards,leaves,parties,cups,.,句子单数变复数Thisisabook.Thatisaneraser.Itisaredapple.Iamaboy.He/Sheisateac