名词单数变复数专练

1、Welcome !,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.,backpacks,watches,oranges,pens,-Whatre these ? -Theyre .,maps,cases,keys,

2、-Whatre those ? -Theyre .,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

3、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,“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和 “树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。,5.,wives,leaves,wolves,roofs,roof,“小偷”(thief)的“妻子

4、”(wife)用“刀子”(knife)和“树叶”(leaf) 把“狼”(wolf)劈成两“半”(half)。,巧记：,6. 以o结尾的名词，有的加-s, 有的加-es构成复数形式。,photo,photos,heroes,tomatoes,zoos,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 Nigro(黑人）,巧记: 黑人英雄爱吃 土豆和西红柿。,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

5、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 .,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,

6、rulers,cats,boys,girls,cases,wives,watches,trees,keys,questions,beds,heroes,friends,families,dictionaries,photos,cards,leaves,parties,cups,this that I you he / she / it am / is ,these,those,we,you,they,are,单数 复数,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

7、teacher. Whats this ?,These are books. Those are erasers. They are red apples. We are boys. They are teachers. Whatre these ?,复数句子变单数句子 These are dictionaries. 单数 一般疑问句,并作肯定回答 划线提问,This is a dictionary.,Are these dictionaries ? Yes, they are.,What are these ?,不规则变化,男人女人 a 变 e，鹅足牙齿 oo 变 ee；老鼠虱子也好记，ous 变 ic；孩子加上 ren，鱼鹿绵羊不用变。,1. man-men woman-women 2. goose-geese foot-feet tooth-teeth 3. mouse-mice Louse-lice 4. child-children 5. fish-fish deer-deer sheep-sheep,关于人,中日不变，英法变，其余“s”加后面,Chin