单击此处编辑母版标题样式,,单击此处编辑母版文本样式,,第二级,,第三级,,第四级,,第五级,,,,*,,,How many books can you see,,twenty,twenty-one,twenty-two,,,,,twenty-three,thirty,forty,fifty,数词的分类,1.基数词〔表示数目的词称为基数词〕,,A.从1-10,,one,two,three,four,five,six,seven,eight,nine,ten,,,B.从11-19,,eleven,twelve,thirteen,fourteen,fifteen,,,sixteen,seventeen,eighteen,nineteen．,,,C.从20-59,,1.整数几十：twenty，thirty，forty，fifty,,2.表示几十几：在几十和个位基数词形式之间添加连字符“-〞,,例如：twenty-six(26),,单词,,竞赛,thirty-three,fifty-eight,twentt-nine,forty-seven,thirty-five,fifty-four,twenty-six,forty-two,Zhang Peng: My schoolbag is heavy,,Miss White: What's in it,,Zhang Peng: Look! 20 story-books, 32 pencils,8 rulers and,,3 pencil-cases.,,Miss White: Wow! Good!,,Amy: My schoolbag is heavy, too.,,Miss White: What's in it,,Amy: 10 sharpeners, 42 crayons, 12erasers and 35,,picture-books.,,Miss White: Thank you soooooo much.,,1.名词？,,名词是表示人与事物名称的词，它既可以表示具体的东西，也可以表示抽象的东西。
2.名词按数分为：,,★可数名词〔单数和复数的相互转化〕,,★不可数名词〔列出你知道的不可数名词〕,名词的单数与复数,,常见的不可数名词,,food,----rice bread meat fish,,drink,----water juice coffee tea milk,,others,----advice money people work,,help glass paper cloth sand soap,,hope work weather information news,,,注意：,1.,不可数名词一般没有复数形式，只有单数形式2.,不可数名词前面不能用不定冠词,a / an,1.,一般情况下，直接在词尾加,-s,构成复数形式,car,basketball,car,s,basketball,s,book,book,s,,box,2.,以,s, x, ch, sh,等结尾的名词， 在词尾加,-es,构成复数形式box,es,class,class,es,watch,watch,es,brush,brush,es,s,x,sh,ch,2.,3.以“辅音字母+y〞结尾的名词，变“y〞为“i〞，再加-es构成复数形式。
ci,t,y→cit,ies,,,fami,l,y→famil,ies,,,,,par,t,y→part,ies,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 boy,boy,s,day,day,s,o,a,y,y,.,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knife,kni,ves,wolf,wol,ves,.,注意：,roof→roof,s,6. 以o结尾的名词，有的加-s, 有的加-es构成复数形式phot,o,photo,s,hero,es,tomato,es,zoo,s,zo,o,,tomat,o,(西红柿),,her,o,(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,,,Practise,peach_________ 2. zoo _________,,3. glass _________ 4. fox _______,,5. lady _________ 6. policewoman _________,,7. house ___________ 8. photo _________,,9. monkey __________ 10. wife __________,,11. rose ____________ 12. path __________,,13. judge ___________ 14. map ___________,peaches,zoos,glasses,foxes,ladies,policewomen,houses,photos,monkeys,wives,roses,paths,judges,maps,Sum 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 .,,,,,,,,,,,Picture One,。