《名词单数变复数》PPT课件.ppt

Welcome!,名词单数变复数,可数名词和不可数名词,可数名词,（1）（2）（3）（4）,定义：是可以计数的名词。,可数名词前可以用 a,an 限定。,可数名词前可以用 one,two,three 限定。,可数名词有复数形式。,可数名词和不可数名词,不可数名词,（1）（2）（3）（4）,定义：是指不能计数的名词。,不可数名词前不可以用 a,an 限定。,不可数名词前不可以用 one,two,three 限定。,不可数名词没有复数形式。,one boat,boats/s/boats/ts/,a car,two cars/z/,one pen,two pens,Whats this?,What are these?,Sum up:一般情况下,直接在名词词尾,加S.,Its a pen.,They are pens.,a bus,buses/z/,a watch,two watches,a fish,some fishes,a box,three boxes,Sum up:以,s、x、ch、sh,结尾的名词,在其词尾加es,potato,some potatoes,tomato,five tomatoes,Sum up:以字母结尾的名词，有生命的在其词尾加es.无生命的加s。,knife,four knives,leaf,some leaves,Sum up:以,f或fe结尾的名词要将f或fe变为,V再加,es.,baby,fivebabies,boy,threeboys,以辅音字母加y结尾的名词，要变y为i再加es.,-What are those?,-Whats that?,-Its an English book.,-They are English books.,-What are those?,-Whats that?,-Its a map.,-They are maps.,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 these?,-Whats this?,-Its a ruler.,-They are rulers.,-Whats this?,Its a watch.,-What are these?,-They are watches.,-Whats this?,Its a tomato.,-What are these?,-They are tomatoes.,-Whats this?,Its a strawberry.,-What are these?,-They are strawberries.,-Whats this?,Its a dictionary.,-What are these?,-They are dictionaries.,oranges,pens,-Whatre these?,keys,-Theyre.,watches,tomatoes,-Whatre these?-Theyre.,strawberries,dictionaries,-Whatre these?-Theyre.,-Whatre those?-Theyre.,maps,backpacks,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。,map,backpack,maps,backpacks,book,books,1.,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（刷）,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,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，Negro,巧记:黑人英雄爱吃 土豆西红柿。,4.以“辅音字母+y”结尾的名词，应改y为i，再加es。,family,families,dictionaries,strawberry,strawberries,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,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,wolves,roofs,roof,“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：,Sum up:P95,1.一般情况下,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.以“元音字母+y”结尾的名词，直接在词尾加-s.4.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。,名词单数变复数后s/es 的读音,desks maps,rulers pens,classes,watches,oranges,cats,friends,/s/,/z/,/iz/,/dz/,1.在清辅音后读,2.在元音和浊辅音后读,3.在/s/z/t/d/后读,4.在/t/后读/ts/，在/d/后读,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,cups,this that I you he/she/it am/is,these,those,we,you,they,are,单数 复数,将下列单词变为复数形式：,I,we,she,they,is,are,this,these,he,they,am,are,that,those,it,they,orange,oranges,bus,buses,class,classes,pencil,pencils,将下列句子变为复数形式：,I am a student.,We are students.,This is an eraser.,These are erasers.,It is a car.,They are cars.,He is a teacher.,They are teachers.,That is a bus.,Those are buses.,Is that a cell phone?,Are those cell phones?,Yes,it is.,Yes,they are.,将下列句子变成复数形式,This is a book.2.It is a good eraser.3.That is not an apple.4.Is she your good friend?Yes,she is.,These are books.,They are good erasers.,Those are not apples.,Are they your good friends?Yes,they are.,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 dictionaries.单数一般疑问句,并作肯定回答划线提问,This is a dictionary.,Are these dictionaries?Yes,they are.,What are these?,Thank you!,