名词单数变复数PPT课件19225.ppt

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.,a,4,backpacks,watches,oranges,pens,-Whatre these ? -Theyre .,a,5,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

2、音字母加y结尾的名词,先改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,Ch

3、inese(中国人) Japanese(日本人),3. child（孩子） children,（男人，妇女）,a,8,4.单复数同形(不变): sheep(绵羊) deer(鹿) fish(鱼) ,people(人，人民）mouse（老鼠）-mice 5. oo ee： foot(脚)feet tooth(牙齿) -teeth goose(鹅)-geese 6. 以 f / fe结尾的,变f为v, 再加es wife(妻子) wives knife (小刀) -knives shelf (架子)shelves leaf (叶子) -leaves wolf (狼)-wolves,a,9,名词单数

4、变复数后s / es 的读音 1.在清辅音后读 / 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,a,10,pen desk key box knife card orange boy friend parent mother father sister brother son daughter cousin fam

5、ily 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,a,11,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,the

6、y,are,单数 复数,a,13,一、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,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. T

7、hose are erasers. They are red apples. We are boys. They are teachers. Whatre these ?,a,15,7. This is a dictionary 8 That is your brother 9 She is a girl 10 It is an ID card 11 He is my uncle 12 I am a student,a,16,二、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 you

8、r mother ? Yes, it / she is.,a,17,2.That is a car.,1）变否定句 2）划线提问 3) 变复数句,That is not a car. Whats that? Those are cars.,a,18,3.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.,a,19,4.Her family names Smith. 5.My jacket i

9、s 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 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 my brother. Is that your brother