初中英语数词讲解及专项练习

1、数 词一数词含义：数词分为基数词和序数词。表示数目和数量的词为基数词；表示数目顺序的词为序数词。二基数词基数词 1-100 (略) ten / one hundred / one thousand / ten thousand / one hundred thousand one million / ten million / one hundred million / one billion 123 one hundrend and twenty-three 1,234 one thusand, two hundred and thirty-four. 12,345 twelve thousand, three hundred and forty-five ( 千位与百位之间用 逗号 连接, 百位与十位之间用 and 连接, 十位与个位之间用 连字符 - 连接 ) three hundred ( hundred 没有复数, 不能加s； hundred 前面只能用数字, 不能用 many 和 a few ) hundreds of ( hundred 如果加s, 后面必须接 of) f

2、ive thousand ( thousand 没有复数, 不能加s；thousand 前面只能用数字, 不能用 many 和 a few ) thousands of ( thousand 如果加s, 后面必须接 of) 三讲解序数词序数词 first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth twenty-first twenty-second twentieth thirtieth fortieth fiftieth sixtieth seventieth eightieth ninetieth one hundredth 四数词的表示法 Lesson Three: 第三课 page four six three: 第463页 page five o seven: 第507页 Room three o five: 第305

3、房间： Seventy-six Changan Stree: 长安街76号 in his fifties: 在他50多岁的时候 January twenty-eighth February fourteenth October first 年代: 1978: nineteen seventy-eight 2008: two thousand and eight 2010: two thousand and ten 1900: nineteen hundred 1908: nineteen and eight / nineteen hundred and eight 1960s（1960s）: 二十世纪六十年代 ( in the 1960s / in the 1960s ) 钟点: 8：45 eight forty-five / a quarter to nine 9：15 nine fifteen / a quarter past nine 10：03 ten three / three past ten 11：30 eleven thirty / half past eleven 小

4、数的读法： 1.25 : one point two five 3.728 : three point seven two eight 0.56 : (zero) point five six / (naught) point five six 百分数的读法： 5: five percent； 20 ：twenty percent； 100: one hundred percent 0.5: zero point five percent ( naught point five percent ) 分数表示法: 分子用基数词, 分母用序数词. 分子大于 1 时, 分母用复数形式. 1/5 : one fifth； 2/5 : two fifths； 1/4 : a quarter / one fourth 3/4 : three quarters / three fourths； 5 1/2 : five and a half； 7 2/5 : seven and two fifths 在数学课上，可以这样读分数： 1/2 ： one over two 2/3 : two over t

5、hree 3/4 : three over four 11/20 : eleven over twenty 数词专项训练 1 He became a famous writer in his . A. thirty B. thirtieth C. thirties D. thirtys 2 - How often do you go to the movies ? - a month. A. two B. second C. the second D. twice 3 My office is on floor.A. twelve B. twelfth C. twelveth D. the twelfth 4 There are more than three people in the park. A. hundred B. hundreds C. hundreds of D. hundred of 5 The weight of the moon is only about one of the earth. A. eight B. eighth C. eighty D. the eighth 6 Mr Browns room is on the third floor. A. Room 309 B. 309 Room C. the Room 309 D. the 309 Room 7 China is largest country in the world. A. the B. three C. third D. the third 8 There are workers in this factory. A. five thousand and two hundred and sixty-five B. five thousand and two hundred and sixty five C. five thousand, two hundred and sixty-five

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