七年级上册名词单数变复数ppt课件.ppt

名词单数句子变复数句子,This is an apple.,That is my sister.,be动词表示“是”，有三个：am ,is, are.我（I）用am,你(you )用are,Is用于他(he)、她(she)、它(it),单数后跟is,复数人称全部都用are.,单数,复数,weyoutheythesethose,Iyouhe /she/ itthisthat,amareisisis,areareareareare,This is an orange.,These are oranges.,That is a pencil.,Those are pencils.,This is my grandfather. This is my grandmother.,These are my grandparents.,This is my mother.This is my father.,This is my brother. This is my brother, too.,These are my parents.,These are my brothers.,把下列句子单数变成复数：,1.This is a book.,2.That is an orange.,3. This is my pencil .,4.That is her quilt.,5.Is this your watch?,6.Is that his dictionary?,7.It is my map.,8.Thats his ring.,These are books.,Those are oranges.,These are my pencils.,Those are her quilts.,Are these your watches?,Are those his dictionaries?,They are maps.,Those are his rings.,把下列句子变成复数。1.This is my sister.2. This is her cousin.3. That is his brother.4. That is my grandparent.把下列句子变成单数。1 These are my friends.2. Those are his parents.3.Those are her sisters.4. These are Li Lings brothers.,These are my sisters.These are her cousins.Those are his brothers.Those are my grandparents.This is my friend.That is his parent.That is her sister.This is Li Lings brother.,-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:,4.单复数同形(不变): sheep(绵羊) deer(鹿) fish(鱼),2.man, woman men, women,1.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,（男人，妇女）,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,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 dictionaries ? Yes, they are.,What are these ?,