名词单数变复数专练.ppt

名词单数变复数1.Whats this in English?Its an apple.What are these?They are two apples.2.-What are these?-Whats this?-Its a pen.-They are pens.3.-What are those?-Whats that?-Its an English book.-They are English books.4.backpackswatchesorangespens-Whatre these?-Theyre .5.mapscaseskeys-Whatre those?-Theyre .6.单数复数可数名词如何变化？规则变化不规则变化规则变化7.1.一般情况下，直接在词尾加-s构成复数形式。carbackpackcarsbackpacksbookbooks8.namepencardrulernamespenscardsrulers9.练习一dog-duck-chair-table-band-window-banana-tree-dogs duckschairstables hands windows bananas trees10.box2.以s,x,ch,sh等结尾的名词，在词尾加-es构成复数形式。boxesclassclasseswatchwatchesbrushbrushessxshch11.busbusesfoxesfox(狐狸)dish(盘子)dishes12.练习二nglass-nbox-nbrush-nmatch-nclass-nbus-nwatch-nglasses nboxes nbrushes nmatches nclassesnbusesnwatches13.综合练习一nglass-ndesk-nschool-nbox-nbrush-nhen-nmatch-nclass-nbus-neye-nwatch-nglasses ndesks nschoolsnboxes nbrushes nhensnmatches nclassesnbusesneyesnwatches14.3.以“辅音字母+y”结尾的名词，应改y为i，再加-es。familyfamiliescomediescomedy(喜剧)yyld15.4.以“元音字母+y”结尾的名词，直接在词尾加-s构成复数形式。boyboysdaydaysoayy16.keycitiesstrawberrieskeyscity(城市)strawberry(草莓)17.练习三ncity-nday-nboy-nfamily-nkey-nstrawberry-nbaby-ncities ndays nboysnfamilies nkeysnstrawberries nbabies 18.综合练习二nstrawberry nkey-nglass-nbus-nboy-neye-nwatch-ncity-nschool-nstrawberries nkeysnglasses nbuses nboysneyesnwatchesncities nschoolsnbox-nbaby-nfamily-nbrush-nmatch-nclass-ndesk-nhen-nday-nboxes nbabies nfamilies nbrushes nmatches nclassesndesks nhensndays 19.5.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。knifekniveshalfhalves“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。20.wivesleaveswolveswife(妻子)leaf(树叶)wolf(狼)roof(屋顶)roofsroof21.“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“树叶”(leaf)把“狼”(wolf)劈成两“半”(half)。巧记一：22.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。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（树叶）。由self构成的复合词，其变化与self相同（如myselfourselves；yourselfyourselves；himelf，herself，itselfthemselves）。巧记二：23.练习四wife-knife-wolf-thief-shelf-self-life-half-leaf-wives knives wolves thieves shelves selves lives halves leaves24.综合练习三nwife-nkey-nglass-nknife-nboy-neye-nwatch-ncity-nschool-nwives nkeysnglasses nbuses nboysneyesnwatchesncities nschoolsnbox-nbaby-nfamily-nbrush-nmatch-nclass-ndesk-nhen-nday-nboxes nbabies nfamiliesnbrushes nmatches nclassesndesks nhensndays25.6.以o结尾的名词，有的加-s,有的加-es构成复数形式。photophotosheroestomatoeszooszoo(动物园)tomato(西红柿)hero(英雄)26.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。27.练习四npiano-nzoo-npotato-nphoto-ntomato-nradio-npianosnzoosnpotatoesnphotosntomatoesnradios28.nSum up: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.29.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-birdsladiesorangesrulerscatsboysgirlscaseswiveswatchestreeskeysquestionsbedsheroesfriendsfamiliesdictionariesphotoscardsleavespartiescups30.综合练习三nfamilies nknives nbooks nbeds nwolves nbuses nshelves nzoos npotatoes ncities nphotos nleaf npiano nbox ntomato nbrush nwatch nbag ncat nradio nboy nstrawberrynleaves npianos nboxes ntomatoes nbrushes nwatches nbags ncats nradios nboys nstrawberries nfamily nknife nbook nbed nwolf nbus nshelf nzoo npotato ncity nphoto 31.不规则名词复数变化一deer-sheep-foot-tooth-goose-fish-Chinese-Japanese-deer sheep feet teeth geese fish Chinese Japanese32.不规则名词复数变化二man-woman-policeman-mouse-child-menwomen policemen mice children33.this that I you he/she/it am/is thesethoseweyoutheyare 单数 复数34.不规则名词复数变化三this-that-I-me-you-he/she/it/-him/her/it-am/is-these thosewe us you they themare35.综合练习三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 we36.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 this?These are books.Those are erasers.They are red apples.We are boys.They are teachers.Whatre these?37.复数句子变单数句子 These are These are dictionariesdictionaries.单数一般疑问句,并作肯定回答划线提问 This is a dictionary.Are these dictionaries?Yes,they are.What are these?38.39.