河北省撫寧縣第六中學(xué)2013-2014學(xué)年高二英語(yǔ) 數(shù)詞學(xué)案

數(shù)詞1.數(shù)詞的類別基數(shù)詞1-12詞尾不固定one two three four five six seven eight nine ten eleven twelve 13-19詞尾加teenthirteen fourteen fifteen sixteen seventeen eighteen nineteen20-90詞尾加tytwenty thirty forty fifty sixty seventy eighty ninety單位詞100：hundred 1,000 ：thousand 1,000,000 ：million1,000,000,000：billion序數(shù)詞第1-第3，形式各異first (1st) second (2nd) third (3rd)第4-第19，基數(shù)詞 + thfourth fifth sixth seventh eighth ninth tenth eleventh twelfththirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth第20-第90，變y為iethtwentieth thirtieth fortieth fiftieth sixtieth seventieth eightieth ninetieth只變個(gè)位基數(shù)詞為序數(shù)詞twenty-first thirty-second forty-third fifty-fourth sixty-fifth100th (one) hundredth 101th (one) hundred and first122th (one)hundred and twenty-second2.分?jǐn)?shù)表達(dá)（1）分子基數(shù)詞，分母序數(shù)詞；分子大于一，分母加“s”；分母若是2和4,half, (a) quarter可代替。 eg; 1/4:one fourth / one quarter/ a quarter 3/4: three fourths/ three quarters 1/2: one / a half （不用one second） two and three fifths（2）分子和分母之間加in/ out of，分子在前，分母在后，分子分母都用基數(shù)詞。 eg: 1/10:one in/ out of ten 5/8:five in/ out of eight3.倍數(shù)表達(dá)A is + 倍數(shù)/分?jǐn)?shù)/百分?jǐn)?shù)+ as + 形容詞/副詞的原級(jí) + （as B ）A is + 倍數(shù)/分?jǐn)?shù)/百分?jǐn)?shù)+ 形容詞/副詞的比較級(jí)+ （than B ）A is + 倍數(shù)/分?jǐn)?shù)/百分?jǐn)?shù)+ the + 名詞 + of B【注意】一倍：once 兩倍：twice/double 3倍：3/4/5times4.hundred,thousand, dozen等1）與基數(shù)詞及several, some, many, about, nearly, almost, over, around等連用時(shí)，均不加 “s”；表泛指時(shí)加“s”.eg: hundreds of上百的 dozens of成打的2）與人稱代詞的賓格，定冠詞，指示代詞，形容詞性物主代詞，名詞所有格連用時(shí)，加ofeg:hundred + n hundred + of + 定冠詞+ n/指示代詞+ n/代詞賓格【注意】score of + n(of一般不可省略)5.可數(shù)名詞及不可數(shù)名詞的修飾語(yǔ)1）只修飾可數(shù)名詞： many, a good / great many, many a, a (good/ large/ great ) number of, numbers of, few, a few, scores of, several, dozens of, scores of2）只修飾不可數(shù)名詞：much,a little (of),a bit of,a great/good deal of,a large amount of, amounts of3)既可修飾可數(shù)名詞，又可修飾不可數(shù)名詞：a lot of, lots of, some, any, enough, plenty of, a large quantity/ supply of, large quantities of, supplies of , a mass of, masses of, all, more, most6.數(shù)字增減表示法by + 百分?jǐn)?shù)/分?jǐn)?shù)/數(shù)字（增加/減少了） to + 百分?jǐn)?shù)/分?jǐn)?shù)/數(shù)字（增加/減少到）2