名词单数变复数专练课件.ppt

名词单数变复数专练课件.ppt

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名词名词单数单数变变复数复数WhatsthisinEnglish?

Itsanapple.Whatarethese?

Theyaretwoapples.-Whatarethese?

-Whatsthis?

-Itsapen.-Theyarepens.-Whatarethose?

-Whatsthat?

-ItsanEnglishbook.-TheyareEnglishbooks.backpackswatchesorangespens-Whatrethese?

-Theyre.mapscaseskeys-Whatrethose?

-Theyre.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规则变化1.一般情况下，直接在词尾加-s构成复数形式。

carbackpackcarsbackpacksbookbooksnamepencardrulernamespenscardsrulers练习一练习一dog-duck-chair-table-band-window-banana-tree-dogsduckschairstableshandswindowsbananastreesbox2.以s,x,ch,sh等结尾的名词，在词尾加-es构成复数形式。

boxesclassclasseswatchwatchesbrushbrushessxshchbusbusesfoxesfox（狐狸）dish（盘子）dishes练习二练习二nglass-nbox-nbrush-nmatch-nclass-nbus-nwatch-nglassesnboxesnbrushesnmatchesnclassesnbusesnwatches综合练习一综合练习一nglass-ndesk-nschool-nbox-nbrush-nhen-nmatch-nclass-nbus-neye-nwatch-nglassesndesksnschoolsnboxesnbrushesnhensnmatchesnclassesnbusesneyesnwatches3.以“辅音字母+y”结尾的名词，应改y为i，再加-es。

familyfamiliescomediescomedy（喜剧）yyld4.以“元音字母+y”结尾的名词，直接在词尾加-s构成复数形式。

boyboysdaydaysoayykeycitiesstrawberrieskeyscity（城市）strawberry（草莓）练习三练习三ncity-nday-nboy-nfamily-nkey-nstrawberry-nbaby-ncitiesndaysnboysnfamiliesnkeysnstrawberriesnbabies综合练习二综合练习二nstrawberrynkey-nglass-nbus-nboy-neye-nwatch-ncity-nschool-nstrawberriesnkeysnglassesnbusesnboysneyesnwatchesncitiesnschoolsnbox-nbaby-nfamily-nbrush-nmatch-nclass-ndesk-nhen-nday-nboxesnbabiesnfamiliesnbrushesnmatchesnclassesndesksnhensndays5.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）。

wivesleaveswolveswife（妻子）leaf（树叶）wolf（狼）roof（屋顶）roofsroof“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：

妻子持刀去宰狼，妻子持刀去宰狼，小偷吓得发了慌；小偷吓得发了慌；躲在架后保己命，半片树叶遮目光。

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；himself，herself，itselfthemselves）。

巧记二：

练习四练习四wife-knife-wolf-thief-shelf-self-life-half-leaf-wiveskniveswolvesthievesshelvesselvesliveshalvesleaves综合练习三综合练习三nwife-nkey-nglass-nknife-nboy-neye-nwatch-ncity-nschool-nwivesnkeysnglassesnbusesnboysneyesnwatchesncitiesnschoolsnbox-nbaby-nfamily-nbrush-nmatch-nclass-ndesk-nhen-nday-nboxesnbabiesnfamiliesnbrushesnmatchesnclassesndesksnhensndays6.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）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:

英雄爱吃英雄爱吃土豆炖西红柿土豆炖西红柿。

练习四练习四npiano-nzoo-npotato-nphoto-ntomato-nradio-npianosnzoosnpotatoesnphotosntomatoesnradiosnSumup:

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.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-birdsladiesorangesrulerscatsboysgirlscaseswiveswatchestreeskeysquestionsbedsheroesfriendsfamiliesdictionariesphotoscardsleavespartiescups综合练习三综合练习三nfamiliesnknivesnbooksnbedsnwolvesnbusesnshelvesnzoosnpotatoesncitiesnphotosnleafnpianonboxntomatonbrushnwatchnbagncatnradionboynstrawberrynleavesnpianosnboxesntomatoesnbrushesnwatchesnbagsncatsnradiosnboysnstrawberriesnfamilynknifenbooknbednwolfnbusnshelfnzoonpotatoncitynphoto不规则名词复数变化一不规则名词复数变化一deer-sheep-foot-tooth-goose-fish-Chinese-Japanese-deersheepfeetteethgeesefishChineseJapanese不规则名词复数变化二不规则名词复数变化二man-woman-policeman-mouse-child-menwomenpolicemenmicechildrenthisthatIyouhe/she/itam/isthesethoseweyoutheyare单数单数复数复数不规则名词复数变化三不规则名词复数变化三this-that-I-me-you-he/she/it/-him/her/it-am/is-thesethoseweusyoutheythemare综合练习三综合练习三me-Chinese-tooth-mouse-fish-you-she-watch-him-potato-shelf-child-woman-bag-bus-box-photo-sheep-this-that-I-usChineseteethmicefishyoutheywatchesthempotatoesshelveschildrenwomenbagsbusesboxesphotossheep-thesethosewe句子单数变复数句子单数变复数1.Thisisabook.2.Thatisaneraser.3.Itisaredapple.4.Iamaboy.5.He/Sheisateacher.6.Whatsthis?

Thesearebooks.Thoseareerasers.Theyareredapples.Weareboys.Theyareteachers.Whatrethese?

复数句子变单数句子复数句子变单数句子TheseareThesearedictionariesdictionaries.单数单数一般疑问句一般疑问句,并作肯定回答并作肯定回答划线提问划线提问Thisisadictionary.Arethesedictionaries?

Yes,theyare.Whatarethese?