名詞Noun（可數(shù)名詞單數(shù)變復(fù)數(shù)）ZhangYan

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What’sthisinEnglish?--It’sanapple.--Whatarethese?--Theyaretwo

apples.--What

arethese?--What’sthis?--It’sapen.--Theyarepens.backpackswatchesorangespens--What’rethese?--They’re….認(rèn)真比較下列單詞，找出變化規(guī)律。an

orangeorangesadogdogsabirdbirds1.一般情況下，直接在詞尾加-s構(gòu)成復(fù)數(shù)形式。carpencilcarspencilsbookbooks大家能找出什么規(guī)律呢？namepencardrulernamespenscardsrulers練一練仔細(xì)觀察你能得出什么規(guī)律呢？aboxboxesawatchwatchesabrushbrushesdishesfoxesbusesbusbusesfoxesfox(狐貍)dish(盤子)dishes2.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。請觀察這些單詞的復(fù)數(shù)變化與前面看的那些有什么不同呢？給下列可數(shù)名詞變復(fù)數(shù)

card--bus--ruler--box--friend--watch--case--cat--dress--tree--bed--peach--glass--cup--busesrulerscatscasesdresseswatchestreesbedsfriendspeachesglassesboxescardscupsbabyfivebabiesboythreeboys以輔音字母加y結(jié)尾的名詞，要變y為i再加es.knifefourknivesleafsomeleaves以f或fe結(jié)尾的名詞要將f或fe變?yōu)関再加es.potatosomepotatoestomatofivetomatoes部分以字母Ｏ結(jié)尾的名詞，在其詞尾加es.但photo、piano(鋼琴)等除外，photos,pianos.可數(shù)名詞單數(shù)變復(fù)數(shù)的變化規(guī)則：1.一般情況下,直接在名詞詞尾加s.

2.以s,x,sh,ch結(jié)尾的名詞加es.

4.以f或fe結(jié)尾的名詞，將f或fe變?yōu)関再加es.

3.以輔音字母加y結(jié)尾的名詞，要變y為i再加es.5.部分以字母o結(jié)尾的名詞可加es，但photo和piano等除外．給下列名詞變復(fù)數(shù)．a(chǎn)m/is--he--bird--lady--boy--girl--wife--watch--key--picture--this--that--family--dictionary--photo--potato--aretheybirdsladiesboysgirlswiveswatcheskeyspicturesthesethosefamiliesdictionariesphotospotatoes句子單數(shù)變復(fù)數(shù)Thisisabook.Thatisaneraser.Itisaredapple.Iamaboy.He/Sheisateacher.What’sthis?Thesearebooks.Thoseareerasers.Theyareredapples.Weareboys.Theyareteachers.What’rethese?名詞單數(shù)變復(fù)數(shù)1.一般情況加s

2.加s,x,ch,sh結(jié)尾的名詞加es3.以輔音字母加y結(jié)尾的名詞,先改y為i,再加es

(mothers,fathers,sisters,brothers)(buses,boxes,watches)(family--families

dictionary--dictionaries)區(qū)別

key–keys

boy--boys7.單復(fù)數(shù)同形(不變):sheep(綿羊)deer(鹿)fish(魚)5.man,woman

men,women4.加es:potatoes

(土豆)tomatoes

(西紅柿)Chinese(中國人)Japanese(日本人)9.oo

ee：foot(腳)tooth(牙齒)

goose(鵝)8.以f/fe結(jié)尾的,變f為v,再加eswife(妻子)knife(小刀)

s