名词单数变复数sh.ppt

名词单数变复数,-This is a pen.,-These are pens.,-Thats an English book.,-Those 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.以s, x, ch, sh结尾的名词加es,3.以辅音字母加y结尾的名词,先改y为i, 再加es,(mothers, fathers, sisters, brothers),( buses, boxes, watches ),( family - families dictionary - dictionaries ),区别 key keys boy boys toy-toys,名词单数变复数后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,Game:,apples,buses,watches,leaves,babies,tomatoes,pencil-boxes,boys,knives,apple,bus,watch,leafe,baby,tomato,pencil-box,boy,knife,Lets Read,(二)不规则变化:,4.单复数同形(不变): sheep(绵羊) deer(鹿) fish(鱼),2.man, woman men, women women doctors,1.以o结尾两菜加es: potatoes (土豆) tomatoes (西红柿),Chinese(中国人) Japanese(日本人),6. oo ee： foot(脚) tooth(牙齿) goose(鹅),5. 以 f / fe结尾的,变f为v, 再加es,wife(妻子) knife (小刀) shelf (架子) leaf (叶子) wolf (狼),3. child（孩子） children,pen desk key box knife card orange boy friend parent mother father sister brother son daughter 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,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. They are teachers. Whatre these ?,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.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 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 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 ? 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