英语：名词单数变复数课件

1、名词的单数与复数,1.名词？ 名词是表示人与事物名称的词，它既可以表示具体的东西，也可以表示抽象的东西。 2.名词按数分为： 可数名词（单数和复数的相互转化） 不可数名词（列出你知道的不可数名词,常见的不可数名词,food-rice bread meat fish drink-water juice coffee tea milk others-advice money people work help glass paper cloth sand soap hope work weather information news 注意：1.不可数名词一般没有复数形式，只有单数形式。 2.不可数名

2、词前面不能用不定冠词a / an,What are these,Whats this,Its a pen,They are pens,What are those,Whats that,Its an English book,They are English books,单数,复数,可数名词,如何变化,规则变化,1.一般情况下，直接在词尾加-s构成复数形式,car,basketball,cars,basketballs,book,books,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,b

3、rush,brushes,2,3.以“辅音字母+y”结尾的名词，变“y”为“i”，再加-es构成复数形式,citycities familyfamilies partyparties,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,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,wolf,wolves,注意：roofroofs,6. 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,以o结尾的名词,表示无生命事物的名词

4、，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, hero,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.单数复数的不规则变化 例词： manmen woman women,childchildren foot feet,8、单复数同形 ，

5、保持原音。 例词： fish fish,sheep sheep cattle cattle deer deer,给下列可数名词加复数,bird- card- lady- orange- ruler- photo- lady- boy- leaf- mouse- tooth- cat- wife- shelf- key- bus- hero- Chinese- dictionary- fox - girl- zero- party- cup,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

6、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 ,Pratice,1.We need more_(people)to attend it. 2.Thereissome_(food)inthebasket. 3._(knife) are used for cutting things. 4.Iseeyouhaveafewwhite_(hair) 5.This dress cost me 20_(dollar,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