名词单数变复数 (2)ppt课件.ppt

名词单数变复数,1,B:A-P-P-L-E,apple.,A:Isthatanapple,too?,A:WhatsthisinEnglish?,A:Howdoyouspellit?,B:Itsanapple.,B:No,itisnt.Itsanorange.,2,Whatsthis?,Itsanapple.,Whatarethese?,Theyareapples.,3,-Whatarethose?,-Whatsthat?,-Itsabook.,-Theyarebooks.,4,近指人或物,远指人或物,this这,these这些,that那,those那些,5,books,oranges,pens,-Whatrethese?-Theyre.,6,boxes,-Whatrethose?-Theyre.,watches,buses,7,1.一般情况下，直接在词尾加-s构成名词复数形式。,book,orange,books,oranges,pen,pens,8,练习一,dog-duck-chair-table-band-tree-,dogs,chairs,ducks,tables,bands,trees,9,watch,2.以s,x,sh,ch等结尾的名词，在词尾加-es构成复数形式。,watches,bus,buses,box,boxes,10,练习二,glass-box-brush-match-bus-watch-,glasses,matches,buses,watches,boxes,brushes,11,3.以“辅音字母+y”结尾的名词，应改y为i，再加-es。,family,families,candies,12,4.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,13,练习三,city-day-boy-family-key-baby-,cities,days,boys,families,keys,babies,14,综合练习,key-glass-bus-boy-eye-watch-ruler-,keysglassesbusesboyseyeswatchesrulers,box-baby-family-brush-match-class-friend-,boxesbabiesfamiliesbrushesmatchesclassesfriends,15,1.一般情况下,直接在名词词尾加-s.构成复数形式,2.以s,x,sh,ch结尾的名词,在词尾加-es.构成复数形式,3.以辅音字母加y结尾的名词，要变y为i再加-es.构成复数形式,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.,名词单数变复数规则(一),16,Doyouwanttoknowmore?,17,1.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（小刀）,knives,half（一半）,halves,wife(妻子）,wives,wolf（狼）,wolves,thief（小偷）,thieves,shelf（架子),self（自己),life（生命）,leaf（树叶),selves,leaves,lives,shelves,roof(屋顶）,roofs,少数以f或fe结尾的名词，直接加-s构成复数形式,safe保险箱,safes,18,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。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）,巧记一：,19,2.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,（照片）,20,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:hero(英雄），potato（土豆）,tomato（西红柿）,巧记二:英雄爱吃土豆炖西红柿。,21,1.以f或fe结尾的名词，一般情况下先将f或fe变成v，再加-es构成复数形式.部分单词直接加-s构成复数形式。,2.以o结尾的名词,表示无生命事物的名词，在词尾加-s构成复数形式,表示有生命事物的名词，在词尾加-es构成复数形式.,名词单数变复数规则(二),22,Searchfortheirregularchange