高中英语（数字和数词）课件-2023届高三英语二轮复习

Number Numeral Fraction(分数) Cardinal number(基数词) Ordinal number（序数词） Percentage(百分数) Date(日期) Time（时间） 1.Cardinal number(基数词)： 1-19 one、two、three、four、five、six、seven、eight、nine、ten、eleven、twelve、thirteen、fourteen、fifteen、sixteen、seventeen、eighteen、nineteen 2. 20-90 20_______ 30_______ 60_______ 40_______ 50_______ 80_______ 70_______ 90_______ twenty thirty forty fifty sixty seventy eighty ninety 3. 表达几十几时，在几十和个位基数词之间添加连字符“—” 21__________ 43__________ twenty-one forty-three 4.百以上数字 百____________ 百万_________ 十亿_________ 千___________ hundred billion million thousand 1)基数词在表示确切的数字时, 使用百、千、百万、十亿的单数形式 500__________ 6,000,000,000________ five hundred six billion 356_____________________ three hundred and fifty-six 2)基数词在表示不确切的数字时, 使用百、千、百万、十亿的复数形式 改错：There are thousand of students in our school. thousands 3)数词+其他名词构成的名词性短语作定语时 其中的名词用单数形式，名词性短语中用连字符“-”来连接。 1） She is five _____ old. She is a ___________ girl. 改错: It is a 5-meters-wide road. five-year-old meter years 4)表示人的不确切岁数或年代, 用几十的复数形式 He became a professor in his _______(thirty). thirties It was in the 1960s.　 2. Ordinal number(序数词)： one__________ two___________ three__________ five_________ eight __________ nine____________ twelve___________ 1-19 first fifth eighth ninth third second twelfth 其它的序数词都是由其相对应的基数词后面添加“th”构成 four_________ fifteen___________ fourth fifteenth 2. 20-90 twenty________ thirty______ forty______ fifty________ sixty______ seventy_______ eighty______ ninety________ twentieth thirtieth fiftieth sixtieth seventieth eightieth ninetieth fortieth 3.表第几十几时, 用几十的基数词加上连字符“-”和个位序数词 第三十一_______________ 第五十六_________________ thirty-first fifty-sixth 4.序数词的缩写形式： lst, 2nd, 3rd为特殊形式, 其它的都是阿拉伯数字后加上th 5.序数词的考点： 表年级 改错: The little girl is in the five grade. 2）表世纪 改错: This tool was invented in the twenty century. 3）the + 序数词+(n) + to do sth 改错: He is always first one come to the classroom. fifth twentieth to the 3. Fract