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1、,數(shù)詞,定義：表示數(shù)目多少或順序先后的詞叫做數(shù)詞。數(shù)詞有兩種：*表示數(shù)目多少的數(shù)詞叫做基數(shù)詞，如：one，two，three.，ninetyfour等；*表示順序先后的數(shù)詞叫做序數(shù)詞，如：first，second，third.，fifteenth等。,例句,There are five people in my family. 我家有五口人。We live on the sixth floor in a tall building.我們住在一座高樓的第六層。,基數(shù)詞(一)基數(shù)詞的表示方法1基數(shù)詞112是獨立的詞。,1 one 2 two 3 three 4 four 5 five 6 six

2、7 seven 8 eight 9 nine 10 ten 11 eleven 12 twelve,(2)1319都以teen結(jié)尾，都是雙重音：13 thirteen 14 fourteen 15 fifteen 16 sixteen 17 seventeen 18 eighteen 19 nineteen,2基數(shù)詞2090整十位數(shù)都是以ty結(jié)尾。,20 twenty / twentI/ 30 thirty / tI/40 forty / ftI/ 50 fifty / fIftI/60 sixty / sIkstI/ 70 seventy / sevntI/80 eighty / eItI/

3、 90 ninety / naIntI/注：1319的teen/tin/都是重讀音，而2090的ty/tI/都是非重讀音節(jié)；/tin/為長音，而/tI/為短音。,3基數(shù)詞2199都是由“幾十”和“幾”合起來構(gòu)成，詞中間加連字符(但音標里不加連字符)，并分別重讀。21 twentyone 45 fortyfive 23 twentythree 56 fiftysix 34 thirtyfour 67 sixtyseven,4基數(shù)詞101999，先說“幾百”，再加“and”，再加末兩位數(shù)。How many days are there in a year? 一年有多少天？_. 三百六十五天.,Th

4、ree hundred and sixtyfive,51,000以上的數(shù)，先從后向前數(shù)，每三位加“，”，第一個“，”前為thousand，第二個“，”前為million，第三個“，”前為billion(美式)或thousand million(英式)。Can you write the number _?你會寫數(shù)字85,626嗎？Yes, it is 85,626. 會寫，它是85,626。,eightyfive thousand，six hundred and twentysix,6百(hundred)，千(thousand)，百萬(million)等詞與數(shù)字或a(n)連用時，詞尾不可加“s

5、”。The computer was cheap. _那臺電腦很便宜，我只花了兩千元.,I only spent two thousand yuan on it.,7百(hundred)，千(thousand)，百萬(million)等詞與介詞of連用時，須用復數(shù)形式，表示不確定數(shù)目，其前不可與數(shù)字連用。How many people went to Beijing for the Olympic Games in 2008?有多少人去北京看2008年奧運會？_，I think. 上百萬，我認為。,Millions of,8表示“幾十”的數(shù)詞的復數(shù)形式可用來表示人的歲數(shù)，She is _ bu

6、t she looks young.她五十多歲，但她看上去很年輕。,in her fifties,在表示“幾十年代”時，可以用基數(shù)詞的復數(shù)形式，也可用阿拉伯數(shù)字加“s”或“s”。,From_ to _，picturestory cartoons were very popular.從20世紀50年代到20世紀70年代，圖畫故事的卡通片是很受歡迎的。,the 1950s(1950s),the 1970s(1970s),9基數(shù)詞可與其他詞構(gòu)成合成形容詞。Kate is an _ girl. 凱特是個18歲的女孩。,注：這種合成形容詞的結(jié)構(gòu)為：“數(shù)詞單數(shù)名詞形容詞”。復合形容詞中，詞與詞之間要加連字

7、符“”。,eighteenyearold,10基數(shù)詞可用作主語、賓語、表語或同位語。,Give him three.(賓語) 給他三個。_ of the teachers in our school are women teachers.(主語)我們學校三分之二的老師是女老師。,Two thirds,11電話號碼的讀法為順次讀出一個個數(shù)字，“0”讀作“o”或“zero”。數(shù)字連續(xù)重現(xiàn)時可用“double(雙)”。62884405讀作_或_。,six two eight eight four four o (或zero)five,six two double eight double four

8、o (或zero)five,(二)序數(shù)詞表示順序的數(shù)詞稱為序數(shù)詞。序數(shù)詞一般以與之相應(yīng)的基數(shù)詞加詞尾th構(gòu)成；多個單詞時，僅最后一個變?yōu)樾驍?shù)詞。序數(shù)詞前一般需加“the”。,1.“基數(shù)詞”變“序數(shù)詞”的口訣一、二、三特殊記，結(jié)尾要用t,d,d;八去t，九去e，ve要用f替，整十數(shù)變序數(shù)，先把y變?yōu)閕e，然后再加th，若想表示幾十幾，只變個位就可以。,2序數(shù)詞作主語、賓語、表語、定語、同位語或狀語。She was the_fifth in the exam.(作表語)The first of June is Childrens Day.(主語)3表順序時，基數(shù)詞和序數(shù)詞可互換，如：Lesson

9、Five_,the fifth lesson,(三)分數(shù)1分數(shù)的表達與讀法。Two thirds of the students are girls in our class. 在我們班，三分之二的學生是女孩。,注：分子須用基數(shù)詞，分母用序數(shù)詞。分子如果大于1，分母須用復數(shù)形式。先讀分子，再讀分母。分子為 one 時可換用“a”。,21/2讀作“ a(one)half ”(而不是a second“一秒鐘”)；1/4既可讀作“ a(one) quarter ”，又可讀作“ a(one) fourth ”。_ are written in English.世界上3/4的書和報紙是用英語寫的。,Th

10、ree quarters of the worlds books and newspapers,3較復雜的分數(shù)的讀法為“基數(shù)詞分子over基數(shù)詞分母”。帶分數(shù)的讀法是在整數(shù)與分數(shù)之間加讀and。,twenty-seven over two hundred and eighty-five,five and a half,six and four fifths,(四)其他數(shù)的表達1小數(shù)的讀法：小數(shù)點前的基數(shù)詞與前面所講的基數(shù)詞讀法完全相同，小數(shù)點讀作“point”，小數(shù)點后只需將數(shù)字一一讀出。1567讀作_0009讀作 zero point zero zero nine,fifteen point

11、 six seven,2百分數(shù)的讀法：先讀基數(shù)詞，再讀百分號“%”(讀作percent)。,5%讀作five percent05%讀作_200%讀作_,zero point five percent,two hundred percent,3年代的讀法為兩位、兩位地讀。整百的后讀hundred，整千的后讀thousand，前常加“the year”。1937讀作nineteen thirtyseven或：nineteen hundred and thirtyseven1900年讀作nineteen hundred1905年讀作nineteen and(或o)five或：nineteen hun

12、dred and five 2000年讀作the year two thousand,4表示公元后在年份前或后加AD/ ,eIdi/皆可，公元前一律在年份后加BC/ , bici/。表幾十年代時，前加 the，后加s或s。,from 200 BC to 500 AD/AD 500從公元前200年到公元后500年in the 1960s或1960s(讀作nineteen sixties) 二十世紀六十年代,5年、月、日的英語順序為“月，日，年”?！叭铡庇眯驍?shù)詞讀和寫(有時也可用基數(shù)詞)；“日”讀在“月”前時要加讀“of”。July 7(th)，20052005年7月7日讀作：July the s

13、eventh two thousand and five 或the seventh of July two thousand and five Today is Thursday，September 19th.今天星期四，9月19日。,7一些數(shù)學公式的讀法：“加”用plus/and，“減”用minus， “乘”用times，“除”用divided by，動詞多用單數(shù)，如：358讀作：927讀作：6530讀作：842讀作：,Three plus/and five is eight.Nine minus two is seven.Five times six is thirty.Eight div

14、ided by four is two.,1.Now，everybody，please turn to Page_and look at the_picture.AFifth；five BFive；fifth CFifth；fifth DFive；five,練一練,2.Do you have enough students to clean the laboratory?No, I think we need _students.Aanother Btwo othersCmore two Dtwo more,3.The government of Chongqing is building_c

15、heap and good houses for the people.Athousand BthousandsCthousand of Dthousands of,4.Nowadays _of business letters are written in English.Atwo third Btwo thirdsCtwo three Dsecond three,5David, how old is your father this year?_.And we just had a special party for his _ birthday last weekend.AFortiet

16、h；forty BForty；fortyCForty；fortieth DFortieth；fortieth,6Nearly _of the earth _covered by sea.Athree fourth; is Bthree fourths; isCthree fourth; are Dthree fourths; are,7.The number of the students in our school is about nine _. _ of them are boys.Ahundred; Two thirdsBhundred; Two thirdChundreds; Two thirdsDhundreds; Two third,Thank you！,