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小学英语数词专题讲解教案数词(一)(一)基数词(表示几):表示数目多少的词叫基数词1、112的基数词是独立的单词, 即:one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve。2、1319的基数词以-teen结尾,但13,15,18较特殊, 13thirteen 15fifteen 18eighteen。3、2090的整十位均以-ty结尾。但20,30,40,50,80较特殊, 20twenty, 30thirty, 40forty ,50fifty ,80eighty。4、 十位数与个位数之间要加连字符号“-”, 如:28 twenty-eight,96 ninety-six。5、 百位和十位(若无十位则和个位)之间加and, 如:148one hundred and forty-eight ,406four hundred and six。6、 hundred(百),thousand(千),等前面即使有具体的数词,也不能在它们的后面加s。 如:600six hundred,专项练习:一、请写出以下基数词。12_ 14_ 18_ 19_ 21_ 25_ 37_ 58_ 88_ 700_ 二、根据句意或中文提示写出合适的英语数字。(不能用阿拉伯数字)1. There are _ days in a week.2. There are _ or _ days in a year.3. There are _ or _ days in February.4. There are _days in August.5. There are _ minutes in an hour.6. There are _ months in a year.7. There are _(数百个) students in the school.8. There are _(数千个) people in the square.(二)序数词由基数词转变而来,表示“这是第几个”,表示先后顺序的数词叫序数词1. 口诀巧记基数词变序数词:“一、二、三,特殊记, (第一first 第二second第三third)八去“t”,九去“e”, (eighteighth nineninth)“ve”要用“f”替, (fivefifth,twelvetwelfth)见y变成i和e,词尾加上th (twentytwentieth,fortyfortieth)若是遇到几十几,只变个位就可以。(twenty-fivetwenty-fifth)2. 其余情况均在基数词后加th 3.序数词有时用缩写形式:First 缩写 1st, twentysecond 缩写 22th.专项练习:一、把下列基数词改成序数词。one_two_three_nine_fourteen_twenty_ thirty-five_ five_ eight_twelve_ forty-one 二、根据句意和所给汉语完成句子。1. Li Mei is always _(第一个)to come to school.2. Mary lives on _ (第十二)floor of that building.3. Today is my grandfathers _ (第七十)birthday.4. The Changjiang River is _ (第三) longest river in the world.5. Take _ (第二)turning on the left.6. Mary is _ (第四) in the race.数词(二)基本用法(一)基数词的基本用法用基数词来修饰可数名词时,一定别忘了用该名词的复数形式。如:十八个男孩 eighteen boys(二)序数词的基本用法1.序数词前面一般要加定冠词the(或物主代词):Autumn is the third season in a year.2.如果数字较长,序数词总避免使用,而且读的方法也常常简化:第201房间:Room 201 第319页:page 3193. 在谈编了号的东西时,我们可以用基数词表示顺序:the first part-part one 一、时间表达法1. 整点用基数词+oclock, 如:1:00 _ 5:00 _2.按“钟点数+分钟数”的顺序,如:6:18 _ 9:48_3. 分钟不超过30(包含三十)时,用“分钟+past+钟点数”表达。如:6:05_ 7:15_ 8:30_ 4. 分钟数超过30时,用“分钟数+to+钟点数”表达。其中“分钟数”为60减去原分钟数,“钟点数”为下一个钟点数。如:3:50 _ 4:45_ 5:56_ 注意:在具体时刻前通常用at。如: ( at ) six or six oclock专项练习:一、用英语写出下列时间。 _ _ _ _二、按要求完成句子。1. Linda does her homework at five fifty. (改为同义句) Linda does her homework at _ _ _.2. He made clothes for two quarters. (改为同义句) He made clothes for _ _. / _ _ _.3. What is the time? (改为同义句) _ _ is it?4. Mr Green goes to work at seven ten every day. (划线部分提问) _ _ _ Mr Green _ to work every day?二、年、月、日表达法-Whats the date today? -Its May 3rd, 1987. -When is Childrens Day? -Its on June the first ( Jun 1st).-When is Teachers Day? -Its on the tenth of September (Sept 10th).1.年代前用 in. 每两位数读一个词,例如:1987年读作nineteen eighty-seven。 ( in ) 1905 读作(in ) nineteen and five ( in ) 1800 读作( in ) eighteen hundred2.月份开头第一个字母须大写,表示“在某月”时,月份前面用 in。 ( in ) January, ( in ) March, ( in ) December3. 日期 用序数词(前需要加the)表示; “ 在某日”,前面用介词on. ( on ) October the first 4.某年 某月 某日如果年月日同时出现,先月后日,把年代放在最后,用逗号隔开,日要用序数词。in Sep. 1954 on Oct. 1, 1949(读作on October the first, nineteen forty-nine)专项练习:一、用英语写出下列日期。_ _ _ _二、在句中填入适当的词。1. - _ is Halloween? - Its _ October.2. - _ the _ today? Its Jun 1st. - Its _ _.3. - Is Womens Day _ _ _ ? - Yes, it is.4. Mid-Autumn Festival is usually _ _ or _.5. Hong Kong came back _ 1997.三、一些数学加减的读法:3+8=11 three plus eight is eleven. 9-7=2 nine minus seven is two.课后作业一、英汉互译第六课 _20个鸡蛋_6月2日_ on March 20,2004 _seven thirty_ 96把椅子 _No. 5 Middle School _6:40 _ four times _ 二、把下列基数词改成序数词。one_two_three_nine_fourteen_twenty_ thirty-five_ five_ eight_twelve_ forty-one 三、选择题1. We are going to learn _ this term.A. book six B. six book C. the book six D. Book Six2. Jenny wa
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