小学英语单复数.

名词单数变复数,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.,watches,oranges,pens,-Whatre these ? -Theyre .,名词,一名词分可数名词和不可数名词 1. 可数名词 个体名词都是可数名词。每个可数名词都有其单数和复数形式。 A. 单数：表示“一个”的概念。用名词的单数时，名词前需加 a 或 an。 如：a book（一本书）， an apple（一个苹果）， an orange（一个橘子） B. 复数：表示两个或两个以上的物体。 如：two pencils（两枝铅笔）， three weeks（三周）等。,1.一般情况下，直接在词尾加-s构成复数形式。,如：book-books,bag-bags, cat-cats, bed-beds,name,pen,card,ruler,names,pens,cards,rulers,box,2. 以s, x, ch, sh等结尾的名词， 在词尾加-es构成复数形式。,boxes,class,classes,watch,watches,brush,brushes,2.,bus,buses,foxes,dishes,peach,peaches,sandwich,sandwiches,3. 以“辅音字母+y”结尾的名词，应改y为i，再加-es。,family,families,babies,baby,4. 以“元音字母+y”结尾的名词，直接在词尾加-s构成复数形式 。,boy,boys,day,days,4.,key,cities,strawberries,keys,parties,5. 以f或fe结尾的名词，先将f或fe变成v，再加-es构成复数形式。,knife,knives,leaves,以o结尾的名词,表示无生命事物的名词，词尾加-s,表示有生命事物的名词，词尾加-es。,加-es的名词有: potato, tomato,Sum up:,1.一般情况下,直接在名词词尾加-s.,2.以s,x,sh,ch结尾的名词,在词尾加-es.,3.以辅音字母加y结尾的名词，要变y为i再加-es.,5.以f 或 fe结尾的名词，先将f或 fe变为v,再加-es.,6.以o结尾的名词,表示无生命事物的名词加-s, 表示有生命事物的名词加-es。,4.以“元音字母+y”结尾的名词，直接在词尾加-s .,不可数名词： 有些词在汉语中可数,在英语中却不可数。 如：bread（面包）等。 此类不可数名词要表示“一”这个概念时,需用其它方式表达,数词+量词+OF+名词。 如: a piece of bread 等。 注意事项： 不可数名词总是用单数的形式。 不可数名词一般没有复数形式。 不可数名词前，不要加数字。,this that I you he / she / it am / is ,these,those,we,you,they,are,单数 复数,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 ?,复数句子变单数句子 These are flowers. 单数 一般疑问句,并作肯定回答: 划线提问:,: This is a flower.,Are these flowers ? Yes, they are.,What are these ?,写出下列各词的复数 I _ him _ this _ her _ watch _ child _ day _ foot _ book _ dress _,we,them,these,them,watches,children,days,feet,books,dresses,写出下列各词的复数 tooth _ sheep _ box _ strawberry _ you _ peach _ sandwich _ man _ woman _ paper _ juice _ water _ milk _ rice _ tea _,teeth,sheep,boxes,strawberries,you,peaches,sandwiches,men,women,paper,juice,water,milk,rice,tea,二、用所给的单词的复数的正确形式填空： 1.There are three_(chair) in the classroom. 2.These_ (tomato) are red. 3.My brother looks after two_ (baby) 4.My father likes to eat_ (potato). 5.Chinese_ (people)like to eat noodles.,chairs,tomatoes,babies,potatoes,people,6.I have a lot of _ (toy) in my bedroom. 7. My mother wash_ (dish) in the kitchen. 8.I have two_ (pencil-box). 9.There are some_ (bus)in the street. 10.Monster has eight_ (foot).,toys,dishes,Pencil-boxes,buses,feet,三、选择填空 ( )1I can see three _ in the zoo. A monkeies B monkeys C monkey ( )2. The pig has four _. A. foot B. feet C. foots ( )3. I can see ten _ in the picture. A. sheep B. dog C. pig ( )4. The _ has three_. boys, watches B. boy, watch C. boy, watches ( )5. Can you see _on the plate? A. bread B. breads C. breades,B,B,A,C,A,( )6. Mr Black often drink some _. A. milk B. milks C.milkes ( )7. There are some _on the floor. A. child B. man C. books ( )8. Lucy will have some _. A. photo B. photos C. photoes ( )9. I need a pen and some _. A. books B. desk C. chair ( )10. There is some _ in the river. A. fish B. fishes C. fishs,A,C,C,A,A,