1、名词名词 Noun（可数名词单数变复数）（可数名词单数变复数）Xu Changqun-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.backpackswatchesorangespens-Whatre these?-Theyre .认真比较下列单词，找出变化规律。an orangeorangesa dogdogsa birdbirds1.一般情况下，直接在词尾加-s构成复数形式。carpe
2、ncilcarspencilsbookbooks大家能找出出什么规律呢？namepencardrulernamespenscardsrulers练一练仔细观察你能得出什么规律呢？a boxboxesa watchwatchesa brushbrushesdishesfoxesbusesbusbusesfoxesfox(狐狸)dish(盘子)dishes2.以s,x,ch,sh等结尾的名词，在词尾加-es构成复数形式。请观察这些单词的复数变化与前面看的那些有什么不同呢？给下列可数名词变复数给下列可数名词变复数 card-bus-ruler-box-friend-watch-case-cat-dr
3、ess-tree-bed-peach-glass-cup-buses rulers catscases dresseswatches trees beds friends peaches glasses boxes cards cupsbabyfivebabiesboythreeboys以以辅音辅音字母字母加加y结尾的名词，结尾的名词，要变要变y为为i再加再加es.knifefour knivesleafsome leaves以以f或或fe结尾的名词要将结尾的名词要将f或或fe变为变为v再加再加es.potatosome potatoestomatofive tomatoes部分以字母部分以字
4、母结尾的名词，在其词尾结尾的名词，在其词尾加加es.但但photo、piano(钢琴钢琴)等除外，等除外，photos,pianos.可数名词单数变复数的变化规则：可数名词单数变复数的变化规则：1.一般情况下一般情况下,直接在名词词尾加直接在名词词尾加s.2.以以s,x,sh,ch结尾的名词加结尾的名词加es.4.以以f或或 fe结尾的名词，将结尾的名词，将f或或 fe变为变为v再加再加es.3.以辅音字母加以辅音字母加y结尾的名词，要变结尾的名词，要变y为为i再加再加es.5.部分以字母部分以字母o结尾的名词可加结尾的名词可加es，但，但photo和和 piano等除外等除外给下列名词变复数
5、给下列名词变复数 bird-lady-boy-girl-wife-watch-key-picture-this-that-family-dictionary-photo-potato-birdsladiesboys girlswives watcheskeys picturesthese thosefamiliesdictionariesphotospotatoes句子单数变复数句子单数变复数1.This is a book.2.That is an eraser.3.It is a red apple.4.I am a boy.5.He/She is a teacher.6.Whats th
6、is?These are books.Those are erasers.They are red apples.We are boys.They are teachers.Whatre these?名词单数变复数名词单数变复数1.1.一般情况加一般情况加s s 2.2.加加s,x,ch,shs,x,ch,sh结尾的名词加结尾的名词加eses3.3.以辅音字母加以辅音字母加y y结尾的名词结尾的名词,先改先改y y为为i,i,再加再加eses(mothers,fathers,sisters,brothers)(buses,boxes,watches)(family -families dict
7、ionary-dictionaries)区别区别 key keys boy-boys7.单复数同形单复数同形(不变不变):sheep(绵羊绵羊)deer(鹿鹿)fish(鱼鱼)5.man,woman men,women4.加加es:potatoes(土豆土豆)tomatoes(西红柿西红柿)Chinese(中国人中国人)Japanese(日本人日本人)9.oo ee：foot(脚脚)tooth(牙齿牙齿)goose(鹅鹅)8.以以 f/fe结尾的结尾的,变变f为为v,再加再加eswife(妻子妻子)knife(小刀小刀)shelf(架子架子)leaf (叶子叶子)wolf(狼狼)6.child（孩子）孩子）children（男人，妇女）男人，妇女）1.复习记忆可数名词单数变复数的复习记忆可数名词单数变复数的规则。规则。2.练习册练习册P9-10 Section A 完成完成Homework
