《名词变复数》PPT课件.ppt

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1、名词变复数,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.,This is my friend.,These are my friends.,Whos he?,Hes my friend.,Whore they?,Theyre my friends.,名词：人或事物的名称。,名 词,总的来说,事物的性质,专有名词,普通名词,个别的人或事物、地点、国家等。例如：Gina、China。

2、首字母要大写。,不可数名词 例：milk、bread、water。没有复数形式,可数名词,例：an apple、two apples有复数形式,既可数又不可数,例：chicken 可数时表示小鸡，不可数时表示鸡肉,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,backpack,cars,backpacks,book,books,1.,name,pen,card,ruler,names,pens,cards,rulers,练习,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,

3、watch,watches,brush,brushes,2.,bus,buses,foxes,dishes,练习,3.以“辅音字母+y”结尾的名词，应改y为i，再加-es。,family,families,comedies,3.,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,练习,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,“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“树叶

4、”(leaf)把“狼”(wolf)劈成两“半”(half)。,5.,wives,leaves,wolves,roofs,练习,“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：,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,6.,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,hero,巧记:英雄爱吃 土豆炖西红柿。,Sum up:,1

5、.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.,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/iz/4.在/t/后读/ts/，在/d/后读/dz/,desks maps,brothers pens,classes,watches,ora

6、nges,cats,friends,(二)不规则变化:,3.单复数同形(不变):sheep(绵羊)deer(鹿)fish(鱼),1.man,woman men,women,Chinese(中国人)Japanese(日本人),4.oo ee：foot(脚)tooth(牙齿)goose(鹅),2.child（孩子）children,（男人，妇女）,名词变复数歌诀名词复数有变化，词尾常把-s加；结尾若是s,x,ch,sh,加上-es要记下；若遇f,fe,更要弄清其变化；先将它们变成v，然后再把-es加；y结尾要分清，两种情况必须明；不规则名词要注意，它的词形需牢记；中日友好不变化，英法联军a变e。,

7、给下列可数名词加复数,bird-card-lady-orange-ruler-photo-friend-boy-watch-girl-case-cat-wife-tree-key-bed-hero-family-dictionary-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,cup

8、s,this that I you he/she/it am/is,these,those,we,you,they,are,单数 复数,指示代词,人称代词,系动词,句型转换1.Whats this?复数,Whatre these?,2.Hes a Chinese boy.复数,Theyre Chinese boys.,指示代词,人称代词,系动词,可数名词,3.This is a bike.复数句,These are bikes.,指示代词,系动词,可数名词,注意：单数句子转变为复数句子，指示代词、人称代词、系动词、可数名词都要变化为复数形式。,二、句型转换1.This is my mother

9、.,1）变否定句 2）变一般疑问句，并作肯定或否定回答,This is not my mother.Is this your mother?Yes,it is./No,it isnt.,2.That is a car.,1）变否定句 2）划线提问3)变复数句,That is not a car.Whats that?Those are cars.,3.Thats an English dictionary.,1）变否定句 2）变一般疑问句，并作否定回答,Thats not an English dictionary.Is that an English dictionary?No,it isnt.,4.These are dictionaries.单数一般疑问句,并作肯定或否定回答划线提问,This is a dictionary.,Are these dictionaries?Yes,they are.No,they arent.,What are these?,