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1、名詞單數(shù)變復數(shù),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 th
2、ose ? -Theyre .,單數(shù),復數(shù),可數(shù)名詞,如何變化?,規(guī)則變化,1.一般情況下,直接在詞尾加-s構(gòu)成復數(shù)形式。,car,backpack,cars,backpacks,book,books,name,pen,card,ruler,names,pens,cards,rulers,練習一,dog- duck- chair- table- band- window- banana- tree-,dogs ducks chairs tables hands windows bananas trees,box,2. 以s, x, ch, sh等結(jié)尾的名詞, 在詞尾加-es構(gòu)成復數(shù)形式。,bo
3、xes,class,classes,watch,watches,brush,brushes,bus,buses,foxes,dishes,練習二,glass- box- brush- match- class- bus- watch-,glasses boxes brushes matches classes buses watches,綜合練習一,glass- desk- school- box- brush- hen- match- class- bus- eye- watch-,glasses desks schools boxes brushes hens matches classe
4、s buses eyes watches,3. 以“輔音字母+y”結(jié)尾的名詞,應改y為i,再加-es。,family,families,comedies,4. 以“元音字母+y”結(jié)尾的名詞,直接在詞尾加-s構(gòu)成復數(shù)形式 。,boy,boys,day,days,key,cities,strawberries,keys,練習三,city- day - boy - family - key- strawberry - baby -,cities days boys families keys strawberries babies,綜合練習二,strawberry key- glass - bus
5、- boy - eye - watch - city - school -,strawberries keys glasses buses boys eyes watches cities schools,box - baby- family- brush- match- class- desk- hen- day -,boxes babies families brushes matches classes desks hens days,5. 以f或fe結(jié)尾的名詞,先將f或fe變成v,再加-es構(gòu)成復數(shù)形式。,knife,knives,half,halves,“小偷”(thief)的“妻子
6、”(wife)用“刀子”(knife)和 “樹葉”(leaf)把“狼”(wolf)劈成兩“半”(half)。,wives,leaves,wolves,roofs,roof,“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“樹葉”(leaf)把“狼”(wolf)劈成兩“半”(half)。,巧記一:,妻子持刀去宰狼,小偷嚇得發(fā)了慌; 躲在架后保己命,半片樹葉遮目光。 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(樹葉)。 由self構(gòu)成的復合詞,其變化與self
7、相同(如myselfourselves;yourselfyourselves;himelf,herself,itselfthemselves)。,巧記二:,練習四,wife- knife- wolf- thief- shelf- self- life- half- leaf-,wives knives wolves thieves shelves selves lives halves leaves,綜合練習三,wife- key- glass- knife- boy- eye- watch- city- school-,wives keys glasses buses boys eyes w
8、atches cities schools,box- baby- family- brush- match- class- desk- hen- day-,boxes babies families brushes matches classes desks hens days,6. 以o結(jié)尾的名詞,有的加-s, 有的加-es構(gòu)成復數(shù)形式。,photo,photos,heroes,tomatoes,zoos,以o結(jié)尾的名詞,表示無生命事物的名詞,詞尾加-s,表示有生命事物的名詞,詞尾加-es。,加-es的名詞有: potato, tomato, hero,巧記: 英雄愛吃 土豆燉西紅柿。,練習
9、四,piano- zoo- potato- photo- tomato- radio-,pianos zoos potatoes photos tomatoes radios,Sum up:,1.一般情況下,直接在名詞詞尾加-s.,2.以s,x,sh,ch結(jié)尾的名詞,在詞尾加-es.,3.以輔音字母加y結(jié)尾的名詞,要變y為i再加-es.,5.以f或 fe結(jié)尾的名詞,先將f或 fe變?yōu)関,再加-es.,6.以o結(jié)尾的名詞,表示無生命事物的名詞加-s, 表示有生命事物的名詞加-es。,4.以“元音字母+y”結(jié)尾的名詞,直接在詞尾加-s .,給下列可數(shù)名詞加復數(shù),bird- card- lady-
10、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,綜合練習三
11、,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 tomatoes brushes watches bags cats radios boys strawberries,family knife book bed wolf bus shelf zoo potato city photo,不規(guī)則名詞復數(shù)變化一,deer- shee
12、p- foot- tooth- goose - fish- Chinese- Japanese-,deer sheep feet teeth geese fish Chinese Japanese,不規(guī)則名詞復數(shù)變化二,man- woman- policeman- mouse- child-,men women policemen mice children,this that I you he / she / it am / is ,these,those,we,you,they,are,單數(shù) 復數(shù),不規(guī)則名詞復數(shù)變化三,this- that - I - me - you - he/she/
13、it/- him/her/it- am/is-,these those we us you they them are,綜合練習三,me- Chinese- tooth- mouse- fish- you- she-,watch- him- potato- shelf- child- woman- bag-,bus- box- photo- sheep- this- that- I-,us Chineseteeth mice fish you they,watches them potatoes shelves children women bags,buses boxes photos sheep- these those we,句子單數(shù)變復數(shù) 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.
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