初中英语之名词变复数ppt课件

PartofSpeech英语词性,1,2,名词,3,WhatsthisinEnglish?,Itsanapple.,Whatarethese?,Theyaretwoapples.,4,-Whatarethese?,-Whatsthis?,-Itsapen.,-Theyarepens.,5,backpacks,watches,oranges,pens,-Whatrethese?-Theyre.,6,名词可以分为,可数名词,不可数名词,可数名词：可数名词是指能以数目来计算，可以分成个体的人或东西；因此它有复数形式如mapmaps，boyboys，horsehorses,不可数名词：不可数名词是指不能以数目来计算，不可以分成个体的概念、状态、品质、感情或表示物质材料的东西；它一般没有复数形式，只有单数形式，它的前面不能用不定冠词a/an。抽象名词,物质名词和专有名词一般是不可数名词如water，milk,7,单数,复数,可数名词,如何变化？,规则变化,8,1.一般情况下，直接在词尾加-s构成复数形式。,car,backpack,cars,backpacks,book,books,1.,9,name,pen,card,ruler,names,pens,cards,rulers,10,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.,11,bus,buses,foxes,dishes,12,3.以“辅音字母+y”结尾的名词，应改y为i，再加-es。,family,families,comedies,3.,13,4.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.,14,key,cities,strawberries,keys,15,5.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)。,5.,16,wives,leaves,wolves,roofs,roof,17,“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。,巧记：,18,6.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,6.,19,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。,20,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.,21,不规则变化,A元音发生变化。如：man-men，woman-women，foot-feet，tooth-teeth，mouse-miceB词尾发生变化。如：child-childrenC单、复数同形。如：fish-fish，Japanese-Japanese，Chinese-Chinese，sheep-sheep,22,国籍的单复数,23,24,3物质名词（不可数名词）量的表示方法（1）用much，alittle，alotof等表示money，milk，meat，advice，snow,bread（2）用容器表示abowlofrice，aglassofwater，acupoftea，twoglassesofmilk，twopiecesofpaper,25,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,cats,boys,girls,cases,wives,watches,trees,keys,questions,beds,heroes,friends,families,dictionaries,photos,cards,leaves,parties,cups,26,thisthatIyouhe/she/itam/is,these,those,we,you,they,are,单数复数,27,句子单数变复数Thisisabook.Thatisaneraser.Itisaredapple.Iamaboy.He/Sheisateacher.Whatsthis?,Thesearebooks.Thoseareerasers.Theyareredapples.Weareboys.Theyareteachers.Whatrethese?,28,复数句子变单数句子