英语名词单数变复数-最新.ppt
名词单数变复数,one apple,two apples.,a pen,three pens,单数,复数,可数名词,如何变化?,1.一般情况下,直接在词尾加-s构成复数形式。,car,bag,cars,bags,book,books,1.,name,pen,bed,ruler,names,pens,beds,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,2.,bus,buses,foxes,dishes,3.以o结尾的名词,有的加-s,有的加-es构成复数形式。,photo,photos,heroes,tomatoes,zoos,3.,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:hero,potato,tomato,巧记:英雄爱吃 土豆炖西红柿。,以oo结尾的名词变为复数时,词尾加-s,kangaroo(袋鼠),Kangaroos,zoo(动物园),zoos,4.以“辅音字母+y”结尾的名词,应改y为i,再加-es。,family,families,candies,4.,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,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,half,halves,5.,wives,leaves,“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。,巧记:,不规则变化男人女人 a 变 e,鹅足牙 oo 变 ee;man-men;woman-women;goose-geese;foot-feet;tooth-teeth老鼠也好记,ous 变 ic;mouse-mice孩子加上 ren,鱼鹿绵羊不用变child-children;fish;deer;sheep,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.,7.以oo结尾的名词变为复数时,词加-s,名词单数变复数练习题 1.请把下面的名词单数变复数 cat_ dog_ desk_ key_ boy_ story_ family_ bus_ box_ watch_ potato_ tomato_ knife_ teacher_ sister_ plane_ school_ peach_,S,S,S,S,S,stories,families,es,es,es,es,es,knives,S,S,S,S,es,2.把下面的单数句子变成复数句子 1)This is a book.These _ 2)It is a red apple.They _ 3)That is a eraser.Those_,are books,are red apples,are erasers,3.填入所给名词的正确形式。1)I have two_(knife)2)There are many_(box)3)She has three_(ruler),knives,boxes,rulers,Good bye,