中考復(fù)習(xí)專題-基數(shù)詞、序數(shù)詞

基數(shù)詞、序數(shù)詞數(shù)詞數(shù)詞就是表示事物的數(shù)量和順序的詞。

基數(shù)詞

序數(shù)詞數(shù)量順序一、基數(shù)詞、序數(shù)詞基數(shù)詞序數(shù)詞

序數(shù)詞的縮寫形式one

twothreefirstsecondthirdtwelfth1～3

1,2,3特殊記1st2nd3rd數(shù)字+序數(shù)詞最后兩個(gè)字母

4～19/θ/

fourtwelvefivethirteensixfourteensevenfifteeneightsixteennineseventeenteneighteenelevennineteenvefourfisixthseventheighnintenthelevenththfthththte4th11th6th5th7th8th9th10thfthirteenthfourteenthfifteenthsixteenthseventeentheighteenthnineteenthtwelveth12th13th14th15th16th17th18th19th基數(shù)詞基數(shù)詞序數(shù)詞序數(shù)詞縮寫縮寫8減t,9去e,ve要由f替，然后再加“th”twelfth

20～90基數(shù)詞序數(shù)詞縮寫基數(shù)詞序數(shù)詞縮寫twentysixtythirtyseventyfortyeightyfiftyninetytwentyieththirtiethfortiethfiftiethsixtiethseventietheightiethninetiethy要變ie,最后別忘-th.20th30th40th50th60th70th80th90th21～99基數(shù)詞序數(shù)詞縮寫twenty-onethirty-twoforty-threefifty-foursixty-fiveseventy-sixeighty-sevenninety-eightninety-ninetwenty-firstthirty-secondforty-thirdfifty-fourthsixty-fifthseventy-sixtheighty-seventhninety-eighthninety-ninth21st32nd43rd54th65th76th87th98th99th“幾十幾”要注意，個(gè)位序數(shù)就可以！二、基數(shù)詞的讀法101—999，三位數(shù)，百位與十位/個(gè)位之間加and。百位數(shù)讀法101onehundredandone840eighthundredandforty693sixhundredandninety-three千位數(shù)及以上數(shù)字的讀法1,000以上的數(shù)字,從右向左每三位用“，”分開(kāi),分別讀為thousand（千）,million（百萬(wàn)）,billion（十億）

3214,thousandfourthousand,threehundredandtwenty-one321654,7,thousandmillionsevenmillion,sixhundredandfifty-fourthousand,threehundredandtwenty-one千位數(shù)及以上數(shù)字的讀法321654,987,thousandmilliononebillion,ninehundredandeighty-sevenmillion,sixhundredandfifty-fourthousand,1,billionthreehundredandtwenty-one18,113,024,790試一試：eighteenbillion,onehundredandthirteenmillion,twenty-fourthousand,sevenhundredandninety.基數(shù)詞的用法、序數(shù)詞一、表示數(shù)量1.十二層樓2.一千二百五十個(gè)學(xué)生twelve

floors1,250studentshundredsthousandsmillionsbillions數(shù)詞+3.兩百萬(wàn)美元twomilliondollarshundredthousandmillionbillion4.成百上千棵樹(shù)hundredsoftrees+of(several)（表示概數(shù)）（表示具體數(shù)量）(some)/(many)基數(shù)詞的用法二、表示年齡1.十六歲2.在他五十多歲時(shí)3.一個(gè)八歲的女孩sixteen

yearsoldinhis

fiftiesan

eight-year-old

girlinone’s+整十基數(shù)詞的復(fù)數(shù)形式

in

one’s

+整十的復(fù)數(shù)形式teens十多歲twenties二十多歲forties四十多歲sixties六十多歲nineties九十多歲基數(shù)詞+名詞基數(shù)詞+名詞+形容詞復(fù)容合詞形a

two-month

holidaya

100-metre-long

bridge三、表示編號(hào)1.第一課2.五路公交車四、表示年份、年代1.in1998inninteenninety-eight2.in2005intwothousandandfive3.

in1900innineteenhundred4.in1805ineighteenOfive5.inthe1980sinthe

nineteeneightiesLessonOnebusNo.5/No.5bus/3.802號(hào)房間Room802年份年代名詞+數(shù)字讀法：一般是兩位兩位讀inthe1850sinthe

eighteenfifties時(shí)間類型表示法例讀法整點(diǎn)基數(shù)詞（+o’clock)1:00﹤30分鐘分鐘+past+小時(shí)2:10=30分鐘half+past+小時(shí)3:30﹥30分鐘（60-分鐘）+to+（小時(shí)+1）4:40分鐘逢15即一刻鐘aquarter5:156:45簡(jiǎn)化法按順序讀基數(shù)詞7:50oneo’clocktenpasttwohalfpastthreetwentytofiveaquarterpastfiveaquartertosevensevenfifty表示在幾點(diǎn)鐘用介詞at五、表示時(shí)間序數(shù)詞的用法一、表示順序1.第二十一世紀(jì)twenty-firstcenturythe序數(shù)詞前通常要加定冠詞“the”,但是如果有形容詞性物主代詞或名詞所有格時(shí)不加“the”。2.我的第二輛車mysecondcar3.大衛(wèi)的第五封信David’sfifthletter序數(shù)詞可以在句中做主語(yǔ)、賓語(yǔ)、定語(yǔ)和表語(yǔ)。1.ThethirdiswhatIreallyneed.(主語(yǔ)）2.Hechosethesecond.(賓語(yǔ)）3.Weliveonthetwelfthfloor.4.Sheisthesecondinourclass.(定語(yǔ)）(表語(yǔ)）①月日年在2008年10月1日二.表示日期讀法：onOctorberthefirst,twothousandandeight日the+序數(shù)詞月（首字母大寫）月日與年之間用，分開(kāi)年寫法：onOct.1st,2008②日月年在2008年10月1日寫法：on1stOctober,2008讀法：on

thefirstofOctorber,twothousandandeigh