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1、Welcome!,可数名词单数变复数,Whats this in English?,Its an apple.,What are these?,They are two apples.,-What are these?,-Whats this?,-Its a pen.,-They are pens.,-What are those?,-Whats that?,-Its an English book.,-They are English books.,toys,boxes,oranges,pens,-What are these?-Theyre/They are.,maps,eggs,cars
2、,-What are those?-Theyre/They are.,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
3、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,
4、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,this that I you he/she/it am/is,these,those,we,you,they,are,单数 复数,你，敢挑战吗？,photo,photos,family,fami
5、lies,boy,boys,peach,peaches,sheep,sheep,wife,wives,man,men,wolf,wolves,tomato,tomatoes,people,people,人们,你，愿意超越吗?,There are four _(potato)on the table.,potatoes,My sister has three_(knife).,knives,Do you have any _(hobby)?,hobbies,They are _(policeman).,policemen,A lot of _(fish)are swimming in the w
6、ater.,fish,Sum up:,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-mice I-we he/she-they,给下列可数名词加复数,bird-card-lady-orange-r
7、uler-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This is a book.That is an eraser.It is a red apple.I am a boy.He/She is a teacher.Whats this?,These are books.Those are erasers.They are red apples.We are boys.They are teachers.What are these?,Thank you!,
