名詞單數(shù)變復(fù)數(shù)專(zhuān)練課件

名詞單數(shù)變復(fù)數(shù)What’sthisinEnglish?It’sanapple.Whatarethese?Theyaretwoapples.--Whatarethese?--What’sthis?--It’sapen.--Theyare

pens.--Whatarethose?--What’sthat?--It’sanEnglishbook.--Theyare

Englishbooks.backpackswatchesorangespens--What’rethese?--They’re….mapscaseskeys--What’rethose?--They’re….單數(shù)復(fù)數(shù)可數(shù)名詞如

何

變

化？規(guī)則變化不規(guī)則變化規(guī)則變化1.一般情況下，直接在詞尾加-s構(gòu)成復(fù)數(shù)形式。carbackpackcarsbackpacksbookbooksnamepencardrulernamespenscardsrulers練習(xí)一dog------duck-----chair-----table----band-----window-banana-tree------dogsduckschairstableshandswindowsbananastreesbox2.以s,x,ch,sh等結(jié)尾的名詞，

在詞尾加-es構(gòu)成復(fù)數(shù)形式。boxesclassclasseswatchwatchesbrushbrushessxshchbusbusesfoxesfox(狐貍)dish(盤(pán)子)dishes練習(xí)二glass---box------brush---match---class----bus-----watch--glassesboxesbrushesmatchesclassesbuseswatches綜合練習(xí)一glass--desk----school-box-----brush--hen-----match-class--bus----eye----watch-glassesdesksschoolsboxesbrusheshensmatchesclassesbuseseyeswatches3.以“輔音字母+y”結(jié)尾的名詞，應(yīng)改y為i，再加-es。familyfamiliescomediescomedy(喜劇)yyld4.以“元音字母+y”結(jié)尾的名詞，直接在詞尾加-s構(gòu)成復(fù)數(shù)形式。boyboysdaydaysoayykeycitiesstrawberrieskeyscity(城市)strawberry(草莓)練習(xí)三city-----------day----------boy----------family-------key-----------strawberry-baby--------citiesdaysboysfamilieskeysstrawberriesbabies

綜合練習(xí)二strawberrykey---------glass------bus--------boy--------eye--------watch-----city--------school----strawberrieskeysglassesbusesboyseyeswatchescitiesschoolsbox----baby----family----brush----match---class----desk----hen----day

----boxesbabiesfamiliesbrushesmatchesclassesdeskshensdays

5.以f或fe結(jié)尾的名詞，先將f或fe變成v，再加-es構(gòu)成復(fù)數(shù)形式。knifekniveshalfhalves“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“樹(shù)葉”(leaf)把“狼”(wolf)劈成兩“半”(half)。wivesleaveswolveswife(妻子)leaf(樹(shù)葉)wolf(狼)roof(屋頂)roofsroof“小偷”(thief)的“妻子”(wife)用“刀子”(knife)和“樹(shù)葉”(leaf)把“狼”(wolf)劈成兩“半”(half)。巧記一：妻子持刀去宰狼，小偷嚇得發(fā)了慌；躲在架后保己命，半片樹(shù)葉遮目光。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（樹(shù)葉）。由self構(gòu)成的復(fù)合詞，其變化與self相同（如myself→ourselves；yourself→yourselves；himself，herself，itself→themselves）。巧記二：練習(xí)四wife----

knife---

wolf----

thief----

shelf---

self----

life-----

half----

leaf----wiveskniveswolvesthievesshelvesselvesliveshalvesleaves綜合練習(xí)三wife-----key------glass---

knife---

boy-----eye-----watch--city------

school-wiveskeysglassesbusesboyseyeswatchescitiesschoolsbox-----

baby---

family--brush--

match-

class----desk----

hen------day------

boxesbabiesfamiliesbrushesmatchesclassesdeskshensdays6.以o結(jié)尾的名詞，有的加-s,有的加-es構(gòu)成復(fù)數(shù)形式。photophotosheroestomatoeszooszoo(動(dòng)物園)tomato(西紅柿)hero(英雄)以o結(jié)尾的名詞,

表示無(wú)生命事物的名詞，詞尾加-s,

表示有生命事物的名詞，詞尾加-es。

加-es的名詞有:potato,tomato,hero巧記:

英雄愛(ài)吃土豆燉西紅柿。練習(xí)四piano----zoo--------potato---photo----tomato--radio------pianoszoospotatoesphotostomatoesradiosSumup:1.一般情況下,直接在名詞詞尾加-s.2.以s,x,sh,ch結(jié)尾的名詞,在詞尾加-es.3.以輔音字母加y結(jié)尾的名詞，要變y為i再加-es.5.以f或fe結(jié)尾的名詞，先將f或fe變?yōu)関,再加-es.6.以o結(jié)尾的名詞,表示無(wú)生命事物的名詞加-s,表示有生命事物的名詞加-es。4.以“元音字母+y”結(jié)尾的名詞，直接在詞尾加-s.給下列可數(shù)名詞加復(fù)數(shù)．

bird--card--lady--orange--ruler--photo--friend--boy--watch--girl--case--cat--wife--tree--key--bed--hero--family-dictionary--question--leaf--party--cup--birdsladiesorangesrulerscatsboysgirlscaseswiveswatchestreeskeysquestionsbedsheroesfriendsfamiliesdictionariesphotoscardsleavespartiescups綜合練習(xí)三familiesknivesbooksbedswolvesbusesshelveszoospotatoescitiesphotos

leafpianoboxtomatobrushwatchbagcatradioboystrawberryleavespianosboxestomatoesbrusheswatchesbagscatsradiosboysstrawberries

familyknifebookbedwolfbusshelfzoopotatocityphoto

不規(guī)則名詞復(fù)數(shù)變化一deer-------sheep-----foot-------tooth------goose----fish-------Chinese--Japanese-deersheepfeetteethgeesefishChineseJapanese不規(guī)則名詞復(fù)數(shù)變化二man---------woman-----policeman-mouse-----child-------menwomenpolicemenmicechildrenthis–that–I–you–he/she/it–am/is–

thesethoseweyoutheyare單數(shù)復(fù)數(shù)不規(guī)則名詞復(fù)數(shù)變化三this-------that-------I-----------me--------you-------he/she/it/--him/her/it-am/is------thesethoseweusyoutheythemare綜合練習(xí)三me-------Chinese-tooth----mouse--fish-----you-----she------watch-him----potato-shelf---child---woman-bag-----bus---box---photo-sheep-this---that---I-------usChineseteethmicefishyouthey

watchesthempotatoesshelveschildrenwomenbags

busesboxesphotossheep-thesethosewe句子單數(shù)變復(fù)數(shù)Thisisabook.Thatisaneraser.Itisaredapple.Iamaboy.He