英語(yǔ)數(shù)詞用法

1、數(shù)詞數(shù)詞一、一、 數(shù)詞的分類數(shù)詞的分類數(shù)詞分基數(shù)詞和序數(shù)詞兩類。表示數(shù)目多少的數(shù)詞叫做基數(shù) 詞，如：one, ten, fifteen 等；表示順序先后的數(shù)詞叫做序數(shù)詞，如 second, fifth, twelfth等。1. 基數(shù)A從110one，two，three，four，five，six，seven，eight，nine，tenB從 1119eleven，twelve， thirteen， fourteen， fifteen， sixteen， seventeen，eighteen， nineteenC從 2199特殊:twenty，thirty, forty，fifty，sixty,

2、 seventy, eighty ,ninety 21:twenty-one56:fifty-sixD百位數(shù)101 one hundred and one178 one hundred (and) seventy-eightE千位數(shù)以上 thousand千 million百萬(wàn) billion十億4,000：four thousand2,000,000:two million6,000,000,000:six billionF.基數(shù)詞表示確切的數(shù)時(shí)，不用復(fù)數(shù)形式. 表示不確切數(shù)，如成百、成千上萬(wàn)，則用復(fù)數(shù)。320 three hundred and twenty There are hundre

3、ds of people in the hall2. 序數(shù)詞A第一至第十九特殊: first， second， third， fifth，eighth，ninth， twelfth 其他: 添加“-th”。如 sixth、nineteenthB從第二十至第九十九變y為i，再加“eth”構(gòu)成。twentytwentieth thirtythirtieth表示第幾十幾時(shí)，用幾十的基數(shù)詞+“-”+個(gè)位序數(shù)詞。thirty-first 第三十一 fifty-sixth 第五十六seventy-third 第七十三 ninety-ninth 第九十九序數(shù)詞構(gòu)成規(guī)律口訣序數(shù)詞構(gòu)成規(guī)律口訣基變序基變序,有規(guī)

4、律有規(guī)律,一二三特殊記，詞尾字母一二三特殊記，詞尾字母t, d, d， 加加th從從4起，起，(fourth, sixth)八去八去“t”，九去，九去“e”，“f”來(lái)把來(lái)把“ve”替，替，(fifth, twelfth)單詞單詞“ty”作結(jié)尾，作結(jié)尾，“ty”變成變成“tie”，(twentieth, thirtieth,ninetieth)若是遇到幾十幾，只變個(gè)位就可以。若是遇到幾十幾，只變個(gè)位就可以。(fifty-fifth)序數(shù)詞縮寫(xiě)記清楚序數(shù)詞縮寫(xiě)記清楚,數(shù)字后跟兩字母數(shù)字后跟兩字母 （first1st second2nd third3rdfourth4th twentieth20th

5、twenty-third23rd ）.exercise1.寫(xiě)出下列詞的序數(shù)詞形式 1.one 2.two 3.six 4.five 5.nine 6.twelve 7.eight 8.twenty-one firstsecondsixthfifthninthtwelftheighthtwenty-first2.寫(xiě)出下列詞的基數(shù)詞形式。1.third 2.fourth 3.tenth 4.twentieth 5.nineteenth 6.thirty-first _threefourtentwentynineteenthirty-oneexercise3.選擇1. My cousins birt

6、hday is on the of October. A. three B. first C. the secondB2. -What date is it today? -Its of September. A. 26th B. the 26th C. twenty-sixB3. There are days in a week. A. the seven B. seventh C. the seventh D. sevenDexercise4.Sunday is the day of a week. A. one B. first C. secondB5.Twenty-eight minu

7、s(減減)six is . A. the twenty- second B. twenty- two C. twenty- secondB6. Four plus(加加) is twelve. A. seven B. eight C. nineB一、時(shí)刻表示法1. 幾點(diǎn)鐘 5:00 讀作 five oclock 2. 幾點(diǎn)過(guò)幾分 five past seven 七點(diǎn)過(guò)五分 half past six 六點(diǎn)半 a quarter past eight 八點(diǎn)過(guò)一刻3. 幾點(diǎn)差幾分 ten to eight 差十分八點(diǎn) a quarter to twelve 差一刻十二點(diǎn) twenty to six

8、 差二十分六點(diǎn)數(shù)詞的用法數(shù)詞的用法時(shí)間類型時(shí)間類型表示法表示法例例讀法讀法整點(diǎn)整點(diǎn)基數(shù)詞（基數(shù)詞（+ oclock) 1:0030分鐘分鐘分鐘分鐘 + past +小時(shí)小時(shí) 2:10= 30 分鐘分鐘half + past + 小時(shí)小時(shí)3:3030分鐘分鐘（60-分鐘）分鐘） + to +（小時(shí)（小時(shí) + 1）4:40分鐘逢分鐘逢15即即 一刻鐘一刻鐘a quarter5:156:45簡(jiǎn)化法簡(jiǎn)化法按順序讀基數(shù)詞按順序讀基數(shù)詞7:50one oclockten past twohalf past threetwenty to fivea quarter past fivea quarter to

9、 sevenseven fifty表示在幾點(diǎn)鐘用介詞表示在幾點(diǎn)鐘用介詞 atat數(shù)詞的表示法數(shù)詞的表示法 時(shí)間時(shí)間二、加減乘除表示法1. “加加”用plus，and或add表示How much is two plus three? It is five Two and three is equal to five2. “減減”用 minusHow much is ten minus six?3. “乘乘”multiply3X4? How much is three times four?4. “除除”用divide的過(guò)去分詞形式表示164=? How much is sixteen divid

10、ed by four?三、分?jǐn)?shù)表示法1. 基數(shù)詞作分子，序數(shù)詞作分母，除了分子是“1”，其它情況下序數(shù)詞都要用復(fù)數(shù)形式2. 當(dāng)分?jǐn)?shù)后面接名詞時(shí)，如果分?jǐn)?shù)表示的值大于1，名詞用復(fù)數(shù)；小于1，名詞用單數(shù)。1 1/2 hours 一個(gè)半小時(shí)（讀作 one and a half hours）四、百分?jǐn)?shù)表示法百分?jǐn)?shù)用基數(shù)percent 50 fifty percent百分之五十percent不用復(fù)數(shù)形式。1 15 5分子分子 基數(shù)詞基數(shù)詞分母分母 序數(shù)詞序數(shù)詞one fifthone fifth2 27 7分子分子 1 1分母分母 + s+ stwo seventhtwo sevenths s1 14

11、4分子分子 a a分母分母 quarterquartera quartera quarter3 34 4three quarterthree quarters s1 12 2a halfa half1 13 3threethree andand one third one third3 3基數(shù)詞基數(shù)詞 + and + + and + 分?jǐn)?shù)分?jǐn)?shù)數(shù)詞的表示法數(shù)詞的表示法 分?jǐn)?shù)百分?jǐn)?shù)分?jǐn)?shù)百分?jǐn)?shù)80 %80 %基數(shù)詞基數(shù)詞 + + percent percenteighty percenteighty percenthalf / (百百)分?jǐn)?shù)分?jǐn)?shù) + of + 可數(shù)名詞復(fù)數(shù)可數(shù)名詞復(fù)數(shù) 謂語(yǔ)動(dòng)詞用復(fù)數(shù)

12、謂語(yǔ)動(dòng)詞用復(fù)數(shù)half / (百百)分?jǐn)?shù)分?jǐn)?shù) + of + 不可數(shù)名詞不可數(shù)名詞謂語(yǔ)動(dòng)詞用單數(shù)謂語(yǔ)動(dòng)詞用單數(shù)3.783.78three three pointpoint seven eight seven eight一般編碼用一般編碼用 名詞名詞 + + 基數(shù)詞基數(shù)詞207207房房 三年級(jí)一班三年級(jí)一班第五部分第五部分第一課第一課3 3 號(hào)汽車號(hào)汽車第一中學(xué)第一中學(xué)Room 207 Room 207 Class one Grade threeClass one Grade threepart five = the fifth partpart five = the fifth partles

13、son one = the first lesson lesson one = the first lesson Bus No.3 =Bus No.3 = the No.3 busthe No.3 busNo. 1 Middle SchoolNo. 1 Middle School五、編號(hào)一、選擇填空。1March is _month of a yearA a three B the third C a third2We will have a meeting at 8:05_Afive to eight Beight five Ceight fifth3Eight plus eight is_

14、.Asixteen Bsixty-four Cone4He is an _boyAeight years Beight-year-old Ceight-years-old5We will have a_ walkAten minutes Bten minutes Cten-minutesB the thirdCeight o fiveAsixteenBeight-year-oldBten minutes6The wall is_.Afour meters long Bfour meter long Cfour-meter long7Whats the date today? Its_AMarch the eight BMarch eighthCeight，March8It happened in the 1040sA in the forties of the eleventh centuryB in the forties of the tenth centuryC in the forty9About_ of the earths surface is covered with water.A. three-fours B. three-fourth C. thre