名词单数变复数课件

1、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.,schoolbags,watches,oranges,pens,-Whatre these ? -Theyre .,maps,cases,keys,-Whatre t

2、hose ? -Theyre .,单数,复数,可数名词,如何变化？,规则变化,认真比较下列单词，找出变化规律。,an orange,oranges,a dog,dogs,a bird,birds,1.一般情况下，直接在词尾加-s构成复数形式。,car,schoolbag,cars,schoolbags,book,books,大家能找出什么规律呢？,name,pen,card,ruler,names,pens,cards,rulers,练一练,仔细观察你能得出什么规律呢？,a box,boxes,a watch,watches,a brush,brushes,dishes,foxes,buses

3、,bus,buses,foxes,dishes,2. 以s, x, ch, sh等结尾的名词， 在词尾加-es构成复数形式。,请观察这些单词的复数变化与前面看的那些有什么不同呢？,给下列可数名词加复数,bird- card- bus- orange- ruler- box- friend- boy- watch- brush- case- cat- dress- tree- key- bed- kiss- peach- glass- question- dish- church- cup-,birds,buses,oranges,rulers,cats,boys,brushes,cases,d

4、resses,watches,trees,keys,questions,beds,kisses,friends,peaches,glasses,boxes,cards,dishes,churches,cups,birds,cards,buses,birds,cards,boxes,buses,birds,cards,watches,boxes,buses,birds,cards,rulers,watches,boxes,buses,birds,cards,oranges,rulers,watches,boxes,buses,birds,cards,friends,oranges,rulers,

5、watches,boxes,buses,birds,cards,brushes,friends,oranges,rulers,watches,boxes,buses,birds,cards,boys,brushes,friends,oranges,rulers,watches,boxes,buses,birds,cards,cases,boys,brushes,friends,oranges,rulers,watches,boxes,buses,birds,cards,cats,cases,boys,brushes,friends,oranges,rulers,watches,boxes,bu

6、ses,birds,cards,keys,cats,cases,boys,brushes,friends,oranges,rulers,watches,boxes,buses,birds,cards,trees,keys,cats,cases,boys,brushes,friends,oranges,rulers,watches,boxes,buses,birds,cards,dresses,trees,keys,cats,cases,boys,brushes,friends,oranges,rulers,watches,boxes,buses,birds,cards,beds,dresses

7、,trees,keys,cats,cases,boys,brushes,friends,oranges,rulers,watches,boxes,buses,birds,cards,名词单数变复数口诀,(一)规则变化 1.名词单数变复数，直接加 -s 占多数； book-books; pen-pens; apple-apples 2. s, x, z, ch, sh 来结尾，直接加上 -es； dress-dresses; box-boxes; buzz(翁翁声）-buzzes; watch-watches; brush（刷子）-brushes 3.词尾是 f 或 fe，加 -s 之前先变 v

8、e； leaf-leaves; wife-wives; knife-knives,4.辅音字母 + y 在词尾，把 y 变 i 再加 -es； study-studies; baby-babies; city-cities 5.元音字母+y在词尾, 只加s就足够 boy boys ; day days; monkey monkeys 6.词尾字母若是 o，常用三个已足够， 要加 -es 请记好，hero, tomato, potato。 美国黑人和英雄爱吃土豆和西红柿。 negro-negroes; hero-heroes; potato-potatoes; tomato-tomatoes 其

9、余o结尾的词加s, photo-photos; piano-pianos,(二) 不规则变化 1. 男人女人 a 变 e，鹅足牙 oo 变 ee； man-men; woman-women; goose-geese; foot-feet; tooth-teeth 2.老鼠虱子也好记，ous 变 ic； mouse-mice; louse-lice 3.孩子加上 ren，鱼鹿绵羊不用变 child-children; fish; deer; sheep this-these(这些) that - those(那些),（单）This is a book.,These are books.,（单）T

10、hat is his brother.,Those are his brothers.,看 谁 做 得 快,（复）,（复）,（单）It is an orange.,They are oranges.,（复）,（单）What is this in English?,（复）What are these in English?,（单）What color is it?,（复）What color are they?,（单）It is red.,（复）They are red.,用am, is 或are填空,1. This _my brother, these _my parents. 2. _ that your sister? No, it isnt. 3. This _ my friend L