【英语】新目标七年级上：名词单数变复数专练课件新目标七年级上.ppt

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1、名词名词单数单数变变复数复数1.Some furniture very nice.2.Many (人）人）（be）in the class room.3.Some boys play basketball,boys play ping-pong.ispeopleareother可数名词和不可数名词可数名词和不可数名词可数名词可数名词（1）（2）（3）（4）定义：是定义：是可以可以计数的名词。计数的名词。可数名词前可数名词前可以可以用用 a,an 限定。限定。可数名词前可数名词前可以可以用用 one,two,three 限定。限定。可数名词可数名词有有复数形式。复数形式。可数名词和不可数名词可数

2、名词和不可数名词不可数名词不可数名词（1）（2）（3）（4）定义：是指定义：是指不能不能计数的名词。计数的名词。不可数名词前不可数名词前不可以不可以用用 a,an 限定。限定。不可数名词前不可数名词前不可以不可以用用 one,two,three 限定。限定。不可数名词不可数名词没有没有复数形式。复数形式。-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 Englis

3、h?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 st

4、rawberry.-What are these?-They are strawberries.-Whats this?Its a dictionary.-What are these?-They are dictionaries.orangespens-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

5、变化规则变化规则变化1.一般情况下，直接在词尾加-s构成复数形式。mapbackpackmapsbackpacksbookbooks1.namepencardrulernamespenscardsrulersbox2.以s,x,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

6、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巧记:英雄爱吃英雄爱吃 土豆炖西红柿土豆炖西红柿。4.以“辅音字母+y”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)Sum up:P951.一般情况下,直接在

7、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。名词单数变复数后名词单数变复数后s/es 的读音的读音desks mapsrulers pensclasses,watches,orangescats,friends/s/z/iz/dz/1.在清辅音后读在清辅音后读2.在元音和浊辅音后读在元音和浊辅音后读3.在在/s/z/t /d /后读后读4.在在/t/后读后读/ts/，在，在/d/后读后读给下列可

8、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-birdsladiesorangesrulerscatsboysgirlscaseswiveswatchestreeskeysquestionsbedsheroesfriendsfamiliesdictionariesphotoscardsleavespartiescupsthis that I you he

9、/she/it am/is thesethoseweyoutheyare 单数单数 复数复数句子单数变复数句子单数变复数1.This is a book.2.That is an eraser.3.It is a red apple.4.I am a boy.5.He/She is a teacher.6.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复数句子变单数句子 These are These are

10、 dictionariesdictionaries.单数单数一般疑问句一般疑问句,并作肯定回答并作肯定回答划线提问划线提问 This is a dictionary.Are these dictionaries?Yes,they are.What are these?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“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。巧记：