名词单数变复数课件

1、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 cartwo cars/ z /one pentwo pensWhats this?What are

2、 these?Sum up:一般情况下,直接在名词词尾加S.Its a pen.They are pens.a busbuses/z /a watchtwo watchesa fishsome fishesa boxthree boxesSum up:以s、x 、ch 、sh结尾的名词,在其词尾加espotatosome potatoestomatofive tomatoesSum 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。knifefour knivesleafsome leavesSum up:以f或fe结尾的名词要将f或fe变为V再加es.babyfivebabie

3、sboythreeboys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 the

4、se?-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.o

5、rangespens-Whatre these ?keys-Theyre .watchestomatoes-Whatre these ?-Theyre .strawberriesdictionaries-Whatre these ?-Theyre .-Whatre those ?-Theyre .mapsbackpacksbooks单数复数可数名词如何变化？规则变化不规则变化规则变化1.一般情况下，直接在词尾加-s构成复数形式。pencardrulernamespenscardsrulersbox2. 以s, x,

6、ch, sh等结尾的名词， 在词尾加-es构成复数形式。boxesclassclasseswatchwatchesbrushbrushes（刷）sxShch2.busbusesfoxesfox(狐狸)dish(盘子)dishes3. 以o结尾的名词，有的加-s, 有的加-es构成复数形式。photophotosheroestomatoeszooszoo(动物园)tomato(西红柿)hero(英雄)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

7、”结尾的名词，应改y为i，再加es。familyfamiliesdictionariesdictionarystrawberrystrawberries以“元音字母+y”结尾的名词，直接在词尾加-s构成复数形式 。boyboysdaydaysoayykeycitiesstrawberrieskeyscity(城市)strawberry(草莓)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。knifekniveshalfhalves5.wivesleaveswolveswife(妻子)leaf(树叶)wolf(狼)roof(屋顶)roofsroof“小偷”(thief)的

8、“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。巧记：Sum up:P951.一般情况下,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 mapsrulers pensclasses, watches, orangescats, friends / s / z / iz / dz

9、 /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-birdsladiesorangesrulerscatsboysgirlscaseswive

10、swatchestreeskeysquestionsbedsheroesfriendsfamiliesdictionariesphotoscardsleavespartiescupsthis that I you he / she / it am / is thesethoseweyoutheyare 单数 复数将下列单词变为复数形式：Iweshetheyisarethisthesehetheyamarethatthoseittheyorangeorangesbusbusesclassclassespencilpencils将下列句子变为复数形式：I am a student.We are s

11、tudents.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 appl