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1、中考英語(yǔ)總復(fù)習(xí)數(shù)詞?(一)知識(shí)概要數(shù)詞用來(lái)表示人或物的數(shù)目多少和順序。所以數(shù)詞主要有兩種:基數(shù)詞,用于計(jì)數(shù),如:one,two…而序數(shù)詞用于表示位置先后或次序,臺(tái):firstsecond…其構(gòu)成法如下: 阿拉伯?dāng)?shù)字基數(shù)詞序數(shù)詞簡(jiǎn)寫(xiě)序數(shù)詞? 1onefirst1st? 2twosecond2nd? 3threethird3rd? 4fourfourth4th? 5fivefifth5th? 6sixsixth6th? 7sevenseventh7th? 8eighteighth8th? 9nineninth9th? 10tententh10th?
2、11eleveneleventh11th? 12twelvetwelfth12th? 13thirteenthirteenth13th? 14fourteenfourteenth14th? 15fifteenfifteenth15th? 16sixteensixteenth16th? 17seventeenseventeenth17th? 18eighteeneighteenth18th? 19nineteennineteenth19th? 20twentytwentieth20th? 21twenty-onetwenty-first21st? 30t
3、hirtythirtieth30th? 40fortyfortieth40th? 50fiftyfiftieth50th? 60sixtysixtieth60th? 70seventyseventieth70th? 80eightyeightieth80th? 90ninetyninetieth90th? 100a(one)hundredhundredth100th? 104onehundredandfourhundredandfourth104th? 1000a(one)thounsandthounsandth1000th? 10000tenthoun
4、sandtenthounsandth10000th? 1000000onemillionmillionth1000000th? 基數(shù)詞與序數(shù)詞都有一定的構(gòu)成方法,但都有特殊例外的幾個(gè)字,所以除了要學(xué)會(huì)一般構(gòu)成法之外,還要特別記熟一些例外。因它們?cè)诳荚囍谐霈F(xiàn)的頻率很高。1基數(shù)詞構(gòu)成結(jié)構(gòu) 21~99的兩位數(shù)字,在10位和個(gè)位之間加連字符構(gòu)成,如89-eighty-nine.101~999的三位數(shù)字,由hundred加and再加二位數(shù)或未位數(shù)字,如:101-onehundredandone,223-twohundredandtwenty-three.四位以上數(shù)字,應(yīng)從個(gè)
5、位起向前數(shù)三位加逗號(hào),讀作thousand,再數(shù)三位加第二個(gè)逗號(hào),讀作million,再數(shù)三位加逗號(hào),讀作billion,其讀法如下:1001-onethousandandone5386-fivethousand,threehundredandeighty-six要注意的是hundred,thousand,million與billion的用法。①前面有別的基數(shù)詞時(shí),即若干個(gè)百、千、百萬(wàn)、十億時(shí),其本身都不要加s,如:threehundredstudents。②若表示成百,成千或數(shù)百,數(shù)千時(shí),前面不能有基數(shù)詞,但其本身要用復(fù)數(shù)形式,然后+of+名詞復(fù)數(shù)。如:thousan
6、dsandthousandsof。(成千上萬(wàn))2序數(shù)詞的構(gòu)成法 序數(shù)詞除first,second,third以外,其余一般在詞尾加th構(gòu)成,除一般略有差異的各別數(shù)詞外,很容易掌握。其二位數(shù)或多位數(shù)只將后面的個(gè)位數(shù)字改為序數(shù)詞,其前面各位數(shù)字均不改變,都用基數(shù)詞。3其他數(shù)字表示法 (1)小數(shù)的小數(shù)點(diǎn)讀作point,零讀作o[u]或zero,小數(shù)點(diǎn)后面的數(shù)字按個(gè)位基數(shù)詞依次讀出。(2)分?jǐn)?shù)分子用基數(shù)詞,分母用序數(shù)詞,當(dāng)分子大于1時(shí),分?jǐn)?shù)要在序數(shù)詞上加s,但1/2用onehalf,14用aquarter.13讀作onethird而23讀作twothirds。(3)百
7、分?jǐn)?shù)(%),讀作percent(percent),但不論是多少均用作單數(shù)形式不能加s。(4)表示日期有兩種說(shuō)法和四種寫(xiě)法,如:2月1號(hào)英語(yǔ)表達(dá)法為:thefirstofFebruary而美語(yǔ)為February(the)first,但其書(shū)寫(xiě)上可有四種寫(xiě)法① February1②February1st③1stFebruary④1/2。(5)倍數(shù)的講法有所不同。兩倍用twice,而三倍以上用序數(shù)詞加times,如:HehasthreetimesasmanybooksasIhave.(二)正誤辨析[誤]1107shou