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1、名词单数变复数,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.,-What are those?,-Whats that?,-Its an English book.,-They are English books.,backpacks,watches,oranges,pens,-Whatre these?-Theyre.,maps,cases,keys,-Whatre those
2、?-Theyre.,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,name,pen,card,ruler,names,pens,cards,rulers,练习一,dog-duck-chair-table-band-window-banana-tree-,dogs duckschairstables hands windows bananas trees,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,wa
3、tch,watches,brush,brushes,bus,buses,foxes,dishes,练习二,glass-box-brush-match-class-bus-watch-,glasses boxes brushes matches classesbuseswatches,综合练习一,glass-desk-school-box-brush-hen-match-class-bus-eye-watch-,glasses desks schoolsboxes brushes hensmatches classesbuseseyeswatches,3.以“辅音字母+y”结尾的名词，应改y为i
4、，再加-es。,family,families,comedies,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,key,cities,strawberries,keys,练习三,city-day-boy-family-key-strawberry-baby-,cities days boysfamilies keysstrawberries babies,综合练习二,strawberry key-glass-bus-boy-eye-watch-city-school-,strawberries keysglasses buses boys
5、eyeswatchescities schools,box-baby-family-brush-match-class-desk-hen-day-,boxes babies families brushes matches classesdesks hensdays,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”(leaf)把“狼”(wolf)劈成两“半”(half)。,wives,leaves,wolves,roofs,roof,“小偷”(
6、thief)的“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。,巧记一：,妻子持刀去宰狼，小偷吓得发了慌；躲在架后保己命，半片树叶遮目光。按：wife（妻子），knife（小刀），wolf（狼），thief（小偷），shelf（架子），self（自己），life（生命），half（一半），leaf（树叶）。由self构成的复合词，其变化与self相同（如myselfourselves；yourselfyourselves；himelf，herself，itselfthemselves）。,巧记二：,练习四,wife-knife-w
7、olf-thief-shelf-self-life-half-leaf-,wives knives wolves thieves shelves selves lives halves leaves,综合练习三,wife-key-glass-knife-boy-eye-watch-city-school-,wives keysglasses buses boyseyeswatchescities schools,box-baby-family-brush-match-class-desk-hen-day-,boxes babies familiesbrushes matches classes
8、desks hensdays,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,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。,练习四,piano-zoo-potato-photo-tomato-radio-,pianoszoospotatoesphotostomatoesradios,Sum up:,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
9、.,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.,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,ca
10、ts,boys,girls,cases,wives,watches,trees,keys,questions,beds,heroes,friends,families,dictionaries,photos,cards,leaves,parties,cups,综合练习三,families knives books beds wolves buses shelves zoos potatoes cities photos,leaf piano box tomato brush watch bag cat radio boy strawberry,leaves pianos boxes tomat
11、oes brushes watches bags cats radios boys strawberries,family knife book bed wolf bus shelf zoo potato city photo,不规则名词复数变化一,deer-sheep-foot-tooth-goose-fish-Chinese-Japanese-,deer sheep feet teeth geese fish Chinese Japanese,不规则名词复数变化二,man-woman-policeman-mouse-child-,menwomen policemen mice childr
12、en,this that I you he/she/it am/is,these,those,we,you,they,are,单数 复数,不规则名词复数变化三,this-that-I-me-you-he/she/it/-him/her/it-am/is-,these thosewe us you they themare,综合练习三,me-Chinese-tooth-mouse-fish-you-she-,watch-him-potato-shelf-child-woman-bag-,bus-box-photo-sheep-this-that-I-,us Chineseteeth mice f
13、ish you they,watches them potatoes shelves children women bags,buses boxes photos sheep-these those we,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!,
