名词单数变复数PPT课件.ppt

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1、名词单数变复数,-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,-Whatre those ?-Theyre .,名词单数变复数(一)规则变化:1.加s,2.加s, x, ch, sh结尾的名词加es,3.以辅音字母加y结尾的名词,先

2、改y为i, 再加es,(mothers, fathers, sisters, brothers),( buses, boxes, watches ),( family - families dictionary - dictionaries ),区别 key keys boy - boys,(二)不规则变化:,2. man, woman men, women,1.以o结尾的名词有生命的加es: potatoes (土豆) tomatoes (西红柿)无生命的在词尾加s :zoo(动物园)zoos radio（收音机）-radios photo(照片）-photos,Chinese(中国人) J

3、apanese(日本人),3. child（孩子） children,（男人，妇女）,4.单复数同形(不变): sheep(绵羊) deer(鹿) fish(鱼) ,people(人，人民）mouse（老鼠）-mice5. oo ee： foot(脚)feet tooth(牙齿) -teeth goose(鹅)-geese6. 以 f / fe结尾的,变f为v, 再加eswife(妻子) wives knife (小刀) -knivesshelf (架子)shelves leaf (叶子) -leaves wolf (狼)-wolves,名词单数变复数后s / es 的读音1.在清辅音后读 /

4、 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,pen desk key box knife card orange boy friend parent mother father sister brother son daughter cousin family child man pencil case sheep,s

5、,s,s,s,es,knives,s,s,s,s,s,s,s,s,s,s,s,families,children,men,s,sheep,名词单数变复数,tomato (西红柿） hero（英雄） negro （黑人）radio （收音机） photo （照片）life（生命） knife （小刀）thief（ 贼 ）roof （屋顶） zoo （动物园）piano（ 钢琴）potato （土豆）,this that I you he / she / it am / is ,these,those,we,you,they,are,单数 复数,一、写出下列单词的复数I- 2.am- 3.he 4

6、.pencil- 5.watch- 6.dictionary- 7. man- 8.it- 9. parent - 10.boy,we,are,they,pencils,watches,dictionaries,men,they,parents,boys,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.

7、They are teachers.Whatre these ?,7. This is a dictionary8 That is your brother 9 She is a girl 10 It is an ID card 11 He is my uncle12 I am a student,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 2）划线提问3) 变复数句,T

8、hat 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 light blue.6. is, that, brother, my, Dave 组词成句,划线提问,划线提问,Whats her family name?What col

9、or 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 my brother.Is that your brother ?No, it / he isnt.,5.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 ?,