《名词单数变复数》PPT课件.ppt

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,key

2、s,-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

3、，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,keys,boy,boys,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, negro,巧记: 英雄黑人爱吃 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结尾的名词，要变y

5、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 .,(二)不规则变化:,3.单复数同形(不变): sheep(绵羊) deer(鹿) fish(鱼),1.man, woman,Chinese(中国人) Japanese(日本人),4. oo ee： foot(脚) tooth(牙齿) goose(鹅),2. child（孩子）,（男人，妇女）,men,women,children,名词单数变复数后s / es 的读音 1.在清辅

6、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 /,desks maps,brothers pens,classes, watches, oranges,cats, friends,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- dictio

7、nary- 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,birds,cards,pen desk key box knife card orange boy friend parent mother father sister brother son daughter

8、 cousin family child man pencil case sheep,s,s,s,s,es,knives,s,s,s,s,s,s,s,s,s,s,s,families,children,men,s,sheep,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 teacher. Whats this ?,Thes

9、e 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 ?,this that I you he / she / it am / is ,these,those,we,you,they,are

10、,单数 复数,一、写出下列单词的复数 I- 2.am- 3.he 4.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.This is my mother.,1）变否定句 2）变一般疑问句，并作肯定回答,This is not my mother. Is this your mother ? Yes, it / she is.,2.That is a car.,1）变否定句

11、2）划线提问 3) 变复数句,That is not a car. Whats that? Those are cars.,3.Thats an English dictionary.,1）变否定句 2）变一般疑问句，并作否定回答,Thats not an English dictionary. Is that an English dictionary? No, it isnt.,4.Her family names Smith. 5.My jacket is blue. 6. is, that, brother, my, Dave 组词成句,划线提问,划线提问,Whats her fami

12、ly name? What color is your jacket? That is my brother , Dave.,句型转换 1.Whats this ? 复数,Whatre these ?,2.Hes a Chinese boy. 复数,Theyre Chinese boys.,3.This is a bike. 否定句 复数句 一般疑问句，并作肯定回答,This is not a bike. These are bikes. Is this a bike ? Yes, it is.,4.That is my brother.,否定句 一般疑问句，并作否定回答,That is not m