可数名词单数变复数 ppt课件

可数名词有单数（Singular Form）和复数(Plural Form)两种形式。

表示一个人或物用单数形式，表示一个以上的人或物用复数形式。

1．一般在词尾加-s。

s在浊辅音后面读[z]，在清辅音后面读[s]，在[t]后与[t]一起读[ts]在[d]后与[d]一起读[dz]。

例如：book — books 书day — days 天、日dog — dogs 狗tree — trees 树2．以s，sh，ch，x结尾的词在词尾加-es，读[iz].例如：glass — glasses 玻璃杯watch — watches 手表box — boxes 盒子brush — brushes 刷子3．以o结尾的词有些加-es，读[z]；有些加-s，读[s]。

例如：tomato — tomatoes 西红柿potato — potatoes 土豆photo — photos 相片radio — radios 收音机zoo — zoos 动物园4．以f 或fe 结尾的词，先把f 改为v，再加–es，读[vz]。

例如：knife — knives 小刀leaf — leaves 树叶life — lives 生命thief — thieves 小偷5．以辅音字母加y 结尾的，先把y 改为i，再加-es，读[z]。

例如：story — stories 故事city — cities 城市family — families 家庭baby — babies 婴儿注意：boy — boys 男孩toy — toys 玩具key — keys 钥匙6．有些名词有不规则的复数形式。

例如：man — men 男人woman — women 妇女tooth — teeth 牙齿foot — feet 脚7．有些名词的单复数形式相同。

例如；deer — deer 鹿sheep — sheep绵羊Chinese — Chinese 中国人Japanese — Japanese 日本人8．有些学科名词虽以s 结尾，但通常都做单数名词看待。

可数名词单数变复数1.直接加s如： tree-trees树 desk-desks桌 card-cards parent-parentsorange--tiger--girl-- banana--lemon-- pencil--2.以sx ch sh 结尾的加es.如：bus-buses box-boxes watch-watches 手表 brush-brushes 刷子 glass-glasses.3.以辅音字母+ y结尾的，改y为i再加es.如：country-countries 国家、乡村 city-cities 城市 baby-babies family-familiesfly--- butterfly---library--- baby---puppy---4.以元音加y结尾的，直接加s.例如：boy-boys monkey-monkeys toy-toys play-plays(剧本)5.以f或者fe 结尾的词，改f为v再加es.如：knife-knives刀 leaf-leaves 树叶 wife 妻子-wives wolf-wolves(狼)6.以O结尾的单词有生命的+es无生命+s.如：Hero-heroes 英雄 Negro-Negroes 黑人 potato-potatoes 土豆 tomato-tomatoes 西红柿；photo-photos(照片)不规则变化1、由“oo”变“ee”:goose---geese foot---feet tooth---teethchild---childrenmouse---mice man---men woman---women注意：由一个词加 man 或 woman构成的合成词，其复数形式也是 -men 和-women，2.单复同形，如:deer，sheep，fish，Chinese，Japanese但除人民币的元、角、分外，美元、英镑、法郎等都有复数形式。

小学英语可数名词单数变复数规律1.一般情况下，直接加s，如：apple-apples,pig-pigs,book-books等2.如果单词以s、sh、ch、x结尾的名词，加es，如：bus-buses(公车),class-classes(班级), watch-watches(手表),box-boxes(盒子),fox-foxes(狐狸)3.以y结尾的单词，元音字母+y的，直接加s:例如：boys 、babys;如果单词以辅音字母+y结尾的名词，把y改成i加es，如：family-families(家庭),strawberry-strawberries(草莓)story-stories(故事)4. 如果单词以f或fe结尾的名词，把f或fe改成v加es，如：wife-wives, knife-knives5. 如果单词以”o"结尾：（1）有生命的，加es，如：potato-potatoes,tomato-tomatoes,hero-heroes (这三个词的记忆口诀---”英雄“爱吃”土豆“和”西红柿“)（2）无生命的，加s，如：photo-photos(照片),radio-radios(收音机) 6.将“oo”改为“ee"的名词，如：tooth-teeth(牙),foot-feet(脚),goose-geese(鹅)8.单复同形的名词：fish-fish, sheep-sheep(绵羊),paper-paper(纸), people-people(peoples表示“民族”)9.不规则变化的名词：（1）man-men, woman-women (记法---“男人”“女人”将a改e)延伸：policeman-policemen, policewoman-policewomen（2）child-children（孩子）（3）mouse-mice(老鼠）（4）根据中文意思变化的名词，如：I-we(我-我们), you-you(你-你们),he/she/it-they(他/她/它-他们), this-these(这个-这些),that-those(那个-那些）<一>、写出下列名词的复数形式1、orange2、class3、text4、monkey5、piano6、child7、shelf8、bed9、country 10、family 11、toy 12、foot13、Japanese 14、radio 15、photo16、army 17、tomato 18、fox19、woman 20、knife 22、sheep <二>、选择填空1、There on the wall .They are very beautiful.A. are photoesB. are photosC. is a photoD. is photos2. This kind of car made in Shanghai.A. is B .are C .were D .has3. There are four and two in the group.A. Japanese, Germen B Japaneses, GermenC. Japanese,German C.Japanese, Germans4. That’a art book.A. anB. aC. the D are5. The boys have got already.A. two breadB. two breadsC. two pieces of breadD. two piece of bread6. The old man wants .A. six boxes of applesB. six boxes of appleC. six box of applesD. six boxs of apples7. There some in the river.A. is ,fishB. are, fishsC. is, fishsD. are ,fish8. There two in the box.A. is watchB. are watchesC. are watchD. is watches9. We should clean twice a day.A .our tooth B. our toothsC.teethD.our teeth10.The _____ meeting room is near the reading room.A.teacherB.teacher’sC.teachers’D.teachers11. In Britain _____ are all painted red.A.letter boxesB.letters boxesC.letter boxD.letters box1）选择填空1. They come from different ______A. countryB. countriesC. a countryD. countrys2. How many ______ do you see in the picture?A. tomatosB. tomatoesC. tomatoD. the tomato3. They are______.A . woman teachers B. women teachersC. women teacherD. woman teacher4. Would you like _______ ,please?A. two glass of waterB. two glasses of waterC. two glass of watersD. two glasses of waters5. Most of ______ live in _______.A. Germans, GermanB. German, GermenC. Germen, GermanyD. Germans, Germany6. There are some ______ in these _______.A.knifes…pencil-boxesB.knives…pencils-boxC.knives…pencil-boxD.knives…pencils-boxes7. ______ like ______ by air.A. Greens, travellingB. The Green, travelingC. The Greens, travelD. The Greens, traveling8. I wonder why ______ are interested in action films(武打片).A. the peopleB. peopleC. peoplesD. the peoples9. There is no ______ in the plate.A. applesB. orangesC. riceD. eggs2）.填入所给名词的正确形式1. I have two_____ (knife)2. There are many _____ here. (box)3. There are many _____ on the road. (bus)4. A few _____ are drawing on the wall. (boy)5. The _____ are playing football now. (child)1）写出下列名词的复数形式。