小学英语单复数.ppt

名词单数变复数,WhatsthisinEnglish?,Itsanapple.,Whatarethese?,Theyaretwoapples.,-Whatarethese?,-Whatsthis?,-Itsapen.,-Theyarepens.,-Whatarethose?,-Whatsthat?,-ItsanEnglishbook.,-TheyareEnglishbooks.,watches,oranges,pens,-Whatrethese?-Theyre.,名词,一名词分可数名词和不可数名词1.可数名词个体名词都是可数名词。每个可数名词都有其单数和复数形式。A.单数：表示“一个”的概念。用名词的单数时，名词前需加a或an。如：abook（一本书），anapple（一个苹果），anorange（一个橘子）B.复数：表示两个或两个以上的物体。如：twopencils（两枝铅笔），threeweeks（三周）等。,1.一般情况下，直接在词尾加-s构成复数形式。,如：book-books,bag-bags,cat-cats,bed-beds,name,pen,card,ruler,names,pens,cards,rulers,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,watch,watches,brush,brushes,2.,bus,buses,foxes,dishes,peach,peaches,sandwich,sandwiches,3.以“辅音字母+y”结尾的名词，应改y为i，再加-es。,family,families,babies,baby,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,4.,key,cities,strawberries,keys,parties,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,leaves,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,Sumup:,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.,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.,不可数名词：有些词在汉语中可数,在英语中却不可数。如：bread（面包）等。此类不可数名词要表示“一”这个概念时,需用其它方式表达,数词+量词+OF+名词。如:apieceofbread等。注意事项：不可数名词总是用单数的形式。不可数名词一般没有复数形式。不可数名词前，不要加数字。,thisthatIyouhe/she/itam/is,these,those,we,you,they,are,单数复数,句子单数变复数Thisisabook.Thatisaneraser.Itisaredapple.Iamaboy.He/Sheisateacher.Whatsthis?,Thesearebooks.Thoseareerasers.Theyareredapples.Weareboys.Theyareteachers.Whatrethese?,复数句子变单数句子Theseareflowers.单数一般疑问句,并作肯定回答:划线提问:,:Thisisaflower.,Aretheseflowers?Yes,theyare.,Whatarethese?,写出下列各词的复数I_him_this_her_watch_child_day_foot_book_dress_,we,them,these,them,watches,children,days,feet,books,dresses,写出下列各词的复数tooth_sheep_box_strawberry_you_peach_sandwich_man_woman_paper_juice_water_milk_rice_tea_,teeth,sheep,boxes,strawberries,you,peaches,sandwiches,men,women,paper,juice,water,milk,rice,tea,二、用所给的单词的复数的正确形式填空：1.Therearethree_(chair)intheclassroom.2.These_(tomato)arered.3.Mybrotherlooksaftertwo_(baby)4.Myfatherlikestoeat_(potato).5.Chinese_(people)liketoeatnoodles.,chairs,tomatoes,babies,potatoes,people,6.Ihavealotof_(toy)inmybedroom.7.Mymotherwash_(dish)inthekitchen.8.Ihavetwo_(pencil-box).9.Therearesome_(bus)inthestreet.10.Monsterhaseight_(foot).,toys,dishes,Pencil-boxes,buses,feet,三、选择填空()1Icanseethree_inthezoo.AmonkeiesBmonkeysCmonkey()2.Thepighasfour_.A.footB.feetC.foots()3.Icanseeten_inthepicture.A.sheepB.dogC.pig()4.The_hasthree_.boys,watchesB.boy,watchC.boy,watches()5.Canyousee_ontheplate?A.breadB.breadsC.breades,B,B,A,C,A,()6.MrBlackoftendrinksome_.A.milkB.milksC.milkes()7.Therearesome_onthefloor.A.childB.manC.books()8.Lucy