初中語法：名詞單數(shù)變復(fù)數(shù)專練解析

1、名詞單數(shù)變復(fù)數(shù)Whafs this in English?It's an apple.Whatarethese?Theyaretwoapples.-What are these?-They are pens>a-Whaf s this?飛a pen.backpacksorangeswatchesWhat are those?-They are English books-Whafsthat?It、anEnglishbook.Whafrethese?,They're.Whafrethose?They'remapscaseskeys可數(shù)名詞規(guī)則變化不規(guī)則變化1 .一般

2、情況下，直接在詞尾加-s構(gòu)成復(fù)數(shù)形式。car-carsbackpack-backpacksbook-booksname-namespen一penscardcardsruler-rulers2 .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。class一classesbox-boxeswatchwatchesbrush-brushesbus-busesfox-foxes（狐貍）dish一dishes（盤子）3 .以“輔音字母+y”結(jié)尾的名詞,應(yīng)改y為i,再加-es0family-familiescomedycomedies（喜劇）4 .以“元音字母+y”結(jié)尾的名詞,直接在詞尾加-

3、s構(gòu)成復(fù)數(shù)形式。boy-boysday-dayscitycities（城而strawberry-strawberries（草莓）keykeys5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。knife-kniveshalf-halves“小偷”（thief）的“葵子”（wife）用“刀子"（knife）和“樹葉”（leaf）把“狼”（wolf）劈成兩“華”（half）。wife一wives（妻子）leaf 一（樹葉）wolf -（狼），roof -（屋頂）leaves wolvesroofs巧憶：“小偷”（thief）的“妻子”（wife）用“刀子”（knife）

4、和“樹葉”（leaf）把“狼”（wolf）劈成兩6.以。結(jié)尾的名詞，有的加-s,有的加es構(gòu)成復(fù)數(shù)形式。photo一photoszoo一zoos（動(dòng)物語）tomato一tomatoes（西紅砌hero-heroes（英雄）以。結(jié)尾的名詞，表示無生命事物的名詞，詞尾加-s,表示布生命事物的名詞，詞尾加es0加-es的名詞有:potato,tomato,hero巧祀：英雄愛吃土豆燉西紅柿0Sumup:|.一般情況F,直接在名詞詞尾加s.2 .以s,x,sh.ch結(jié)屋的名詞，在訶尾加心.3 .以輔仃字母加y結(jié)尾的名詞，要變y為i再加心.4 .以“元音字母+y”結(jié)尾的名詞，內(nèi)接在詞尾加-s.5 .以f

5、或能結(jié)尾的名詞，先將f或施變?yōu)閂,再加YS.6 .以。結(jié)尾的名詞,我不無牛.命少物的名訶加-S,我示有生命事物的名詞加YS。給F列可數(shù)名詞加笈數(shù).bird-birdscard-cardslady-ladiesorange-orangesruler-rulersphoto-photosfriend-friendsboy-boyswatch-watchesgirl-girlscase-casescat-catswife-wivestree-treeskey-keysbed-herishero-herexsfamily-fnniiliesdictionary-dictionariesquestion

6、-questionsleaf-leavesparty-partiescup-cups單數(shù)復(fù)數(shù)tWs-thesethat-thoseI-weyouyouhe/she/it-theyam/is-are句子單數(shù)變復(fù)數(shù)1. This is a book.2. That is an eraser.3. It is a red apple.4. I am a boy.These arc books.Those are erasers.They are red apples We are boys.5. He/Sheisateacher.Theyareteachers.6. What'sthis?WhatVethese?復(fù)數(shù)句子變單數(shù)句子Thesearedietiona