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1、,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,ping-pongs,keys,-Wha
2、tre those ? -Theyre .,可数名词,不可数名词,普通名词,如何区分？,个体名词,抽象名词,集体名词,物质名词,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,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,f
3、oxes,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.,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,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) “树叶”(leaf)把“狼”(wolf)劈两“半”(half)。,5.,wives,leaves,wolv
4、es,roofs,roof,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,巧记: 英雄爱吃 土豆炖西红柿。,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
5、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 .,不规则变化,改变元音的词,man,men,foot,feet,tooth,teeth,woman,women,1.,不规则变化,改变词尾的词,child,children,2.,单复同体的词,sheep,sheep,Chinese,Chinese,deer,deer,不规则变化,Japanese,Japanese,3.,不规则变化,种类可数；总称不可数的词,fish,fishes,fruit,fruits,vegetable,vegetables,4.,小老鼠爬灯台，偷油吃下不来。 男人当警察，
6、保护妇女跟儿童； 英国人的牙咬了法国人的脚； 养了一头日本羊，送给了中国人； 养了一头鹿跟鹅，卖给了瑞士人,mouse mice oil oils man men policewoman policewomen tooth teeth Frenchman foot feet Japanese sheep Chinese deer goose geese Swiss,bird- card- lady- orange- ruler- photo- friend- boy- watch- girl-,birds,ladies,oranges,rulers,boys,girls,watches,fri
7、ends,photos,cards,给下列可数名词加复数,case- cat- wife- tree- key- bed- hero- family- leaf- party- cup- dictionary- question-,cats,cases,wives,trees,keys,questions,beds,heroes,families,dictionaries,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 b
8、ook. 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. 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 ?,Good bye!,
