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1.基数词2.序数词3.数词的应用数词基数词(一)1—12的基数词是独立的单词。one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve(二)13—19的基数词以-teen结尾。thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen(三)20—90的整十位均以-ty结尾。twenty,thirty,forty,fifty,sixty,seventy,eighty,ninety(四)十位数与个位数之间要加连字符号“-”。28twenty-eight96ninety-six(五)百位和个位(若无十位则和个位)之间加and。148onehundredandforty-eight406fourhundredandsix(六)hundred,thousand,million,billion等前面即使有具体的数词,也不能在它们后加-s600sixhundred八百万eightmillion(七)1000以上的数字,从后往前每三位加一个逗号“,”,第一个逗号前为thousand,第二个逗号前为million,第三个逗号前为billion。英文中无“万”这个词,我们可以用“几十个千(thousand)”来表示“几万”,“几百个千(thousand)”来表示“几十万”。2,510=twothousandfivehundredandten84,296=eighty-fourthousandtwohundredandninety-six练习:274,350=88,065,909=(八)hundred,thousand,million用复数形式修饰名词时要用“of+复数名词”数以百计的年轻人hundredsofyoungpeople数以千计的书thousandsofbooks注意:hundreds/thousands/millionsof+复数名词,其前面不能加具体的数词,但可加several或many(九)“基数词+单数名词+形容词”构成合成形容词一个五岁的男孩afive-year-oldboy一座七层高的建筑a7-storey-highbuilding(一)基数词变序数词口诀一二三,特殊记,八去“t”,九去“e”,“ve”要用“f”替,见“y”变成“ie”,词尾加上“th”,若是遇到几十几,只变个位就可以firstsecondthirdeight-eighthnine-ninthfive-fifthtwelve-twelfthtwenty-twentiethforty-fortiethtwenty-five—twenty-fifth(二)其余情况均在基数词后加“th”six-sixthnineteen-nineteenthhundred-hundredththousand-thousandth序数词(一)钟点的表示:小时、分钟、秒钟要用基数词①“几点钟”用基数词加o'clock,通常o'clock可省略。现在是5点钟—It'sfive(o'clock).②“几点过几分,≤30分钟”用介词past。7:05—fivepastseven7:15—fifteen(aquarter)pastseven7:30—halfpastseven③“差几分几点”用介词to。(整点加“1”,且用60减去目前的分钟数)7:40—twentytoeight7:45—fifteen(aquarter)toeight④日常生活中的时间读法常常简化,直接按基数词的顺序来读。7:05—sevenofive7:15—sevenfifteen数词的应用(二)编号的表示①编号可用基数词或序数词表示,但形式不同。LessonEight或theeighthlessonRowFive或thefifthrow②电话号码用基数词表示119—oneonenine(三)年月日的表示①年份用基数词,先读前两位,再读后两位。1999—nineteenninety-nine1900—nineteenhundred2000—twothousand1905—nineteenofive②“年”用基数词,“日”用序数词1998年6月8日写作:June8th,1998读作:Junetheeighth,nineteenninety-eight或theeighthofJune,nineteenninety-eight特殊用法(一)数词作主语,谓语动词用单数。Twomonthsisquitealongtime.Fourandtwoissix.What'stwoandthree?(二)一个半小时(一年半,一个半月可类推)one/ahourandahalf
本文标题:2020春五年级英语下册 Unit 4 When is the art show(数词)素材 人教P
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