1、Welcome !,名詞單數(shù)變復(fù)數(shù),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 .,單數(shù),復(fù)數(shù),可數(shù)名詞,如何變化？,規(guī)則變化,1.一般情況下，直接在詞尾加-s構(gòu)成復(fù)數(shù)形式。,car,backpack,cars,backpacks,book,books,1.,name,pen,card,ruler,names,pens,cards,rulers,box,2. 以s, x, ch, sh等結(jié)尾的名詞， 在詞尾加-es構(gòu)成復(fù)數(shù)形式。,boxes,class,classes,watch,watches,brush,brushes,2.,bus,buses,foxes,dishes,3. 以“輔音字母+y”結(jié)尾的名詞，應(yīng)改y為i

3、，再加-es。,family,families,comedies,3.,4. 以“元音字母+y”結(jié)尾的名詞，直接在詞尾加-s構(gòu)成復(fù)數(shù)形式 。,boy,boys,day,days,4.,key,cities,keys,boy,boys,5. 以f或fe結(jié)尾的名詞，先將f或fe變成v，再加-es構(gòu)成復(fù)數(shù)形式。,knife,knives,half,halves,“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和 “樹葉”(leaf)把“狼”(wolf)劈成兩“半”(half)。,5.,wives,leaves,wolves,roofs,roof,“小偷”(thief)的“妻子”(

4、wife)用“刀子”(knife)和“樹葉”(leaf) 把“狼”(wolf)劈成兩“半”(half)。,巧記：,6. 以o結(jié)尾的名詞，有的加-s, 有的加-es構(gòu)成復(fù)數(shù)形式。,photo,photos,heroes,tomatoes,zoos,6.,以o結(jié)尾的名詞,表示無(wú)生命事物的名詞，詞尾加-s,表示有生命事物的名詞，詞尾加-es。,加-es的名詞有: potato, tomato, hero, negro,巧記: 英雄黑人愛吃 土豆和西紅柿。,Sum up:,1.一般情況下,直接在名詞詞尾加-s.,2.以s,x,sh,ch結(jié)尾的名詞,在詞尾加-es.,3.以輔音字母加y結(jié)尾的名詞，要變y

5、為i再加-es.,5.以f或 fe結(jié)尾的名詞，先將f或 fe變?yōu)関,再加-es.,6.以o結(jié)尾的名詞,表示無(wú)生命事物的名詞加-s, 表示有生命事物的名詞加-es。,4.以“元音字母+y”結(jié)尾的名詞，直接在詞尾加-s .,(二)不規(guī)則變化:,3.單復(fù)數(shù)同形(不變): sheep(綿羊) deer(鹿) fish(魚),1.man, woman,Chinese(中國(guó)人) Japanese(日本人),4. oo ee： foot(腳) tooth(牙齒) goose(鵝),2. child（孩子）,（男人，婦女）,men,women,children,名詞單數(shù)變復(fù)數(shù)后s / es 的讀音 1.在清輔

6、音后讀 / s / 2.在元音和濁輔音后讀 / z / 3.在/ s / / z / / / / / t / / d /后 讀 / iz / 4.在/ t /后讀/ ts /，在 / d /后讀 / dz /,desks maps,brothers pens,classes, watches, oranges,cats, friends,給下列可數(shù)名詞加復(fù)數(shù),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,單數(shù) 復(fù)數(shù),句子單數(shù)變復(fù)數(shù) 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 ?,復(fù)數(shù)句子變單數(shù)句子 These are dictionaries. 單數(shù) 一般疑問句,并作肯定回答 劃線提問,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、,單數(shù) 復(fù)數(shù),一、寫出下列單詞的復(fù)數(shù) 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、句型轉(zhuǎn)換 1.This is my mother.,1）變否定句 2）變一般疑問句，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）變否定句

11、2）劃線提問 3) 變復(fù)數(shù)句,That is not a car. Whats that? Those are cars.,3.Thats an English dictionary.,1）變否定句 2）變一般疑問句，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 組詞成句,劃線提問,劃線提問,Whats her fami

12、ly name? What color is your jacket? That is my brother , Dave.,句型轉(zhuǎn)換 1.Whats this ? 復(fù)數(shù),Whatre these ?,2.Hes a Chinese boy. 復(fù)數(shù),Theyre Chinese boys.,3.This is a bike. 否定句 復(fù)數(shù)句 一般疑問句，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 一般疑問句，并作否定回答,That is not m