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數(shù)詞,1.基數(shù)詞、序數(shù)詞和分?jǐn)?shù)詞的構(gòu)成及基本用法。 2.數(shù)詞作主語時的主謂一致。,復(fù)習(xí)重點(diǎn),基礎(chǔ)知識,數(shù)詞主要包括基數(shù)詞、序數(shù)詞和分?jǐn)?shù)詞?；鶖?shù)詞是表示數(shù)目多少的數(shù)詞，序數(shù)詞是表示先后順序的數(shù)詞。分?jǐn)?shù)詞由基數(shù)詞和序數(shù)詞構(gòu)成。,一、基數(shù)詞 1. hundred, thousand, million, billion, dozen, score等前有具體數(shù)字或several, a few等修飾時，一般不用復(fù)數(shù)；在表示不確切數(shù)目時，可用復(fù)數(shù)。如： Several million people in the world are using this brand of toothpaste every day. My teacher went to the bookstore and bought dozens of books.,2. 表示年歲時，用“in one’s +逢十的基數(shù)詞的復(fù)數(shù)”。如：in his forties。 3. 表示年代時，用“in the +逢十的基數(shù)詞的復(fù)數(shù)”。基數(shù)詞的復(fù)數(shù)若用阿拉伯?dāng)?shù)字表示，可直接加s，也可加’s。如：in the 1950’s / 1950s。,二、序數(shù)詞 1. 序數(shù)詞前通常要加定冠詞the或與物主代詞一起使用，在句中可作主語、賓語、定語和表語等。 2. 序數(shù)詞前也可加不定冠詞，表示“再一，又一”。如：a third time, a third and a fourth等。,三、分?jǐn)?shù)詞 1. 分?jǐn)?shù)詞是由基數(shù)詞和序數(shù)詞構(gòu)成，分子用基數(shù)詞表示，分母用序數(shù)詞表示；除了分子為1的情況下，序數(shù)詞都要用復(fù)數(shù)形式。如：1/3 one third；3/5 three fifths。 2. “分?jǐn)?shù)/百分?jǐn)?shù)+ of +名詞/代詞”作主語時，謂語動詞的數(shù)與名詞或代詞的數(shù)保持一致。如：,Two-thirds of her spare time is spent on housework. 80 percent of the houses were damaged in the big earthquake.,四、常見考點(diǎn) 高考對數(shù)詞的考查主要集中在年齡表達(dá)法、年代表達(dá)法、序數(shù)詞前加冠詞及數(shù)詞作主語時的主謂一致等。 【考例】One-third of the country _______ covered with trees and the majority of the citizens _____ black people. A. is; are B. is; is C. are; are D. are; is,專項練習(xí),根據(jù)括號內(nèi)的漢語提示補(bǔ)全下列句子（每空 一詞）。 1. Early ____ ____ ______ (二十世紀(jì)七十年代) no one had any idea that the woman would become a millionaire by planting flowers.,in the 1970s,2. There are a great many overseas students in our university, _________ ____ ______ (他們當(dāng)中五分之二) come from Asia. 3. Every day in modern society ________ _______ __________ (幾百萬顧客) go shopping on the Internet. 4. _______ ______ _______ (每三年), scores of students from the foreign language school are sent to Britain to learn English.,Every three years,two-fifths of whom,million customers,several,5. You can go to the railway station on foot. It is only ____ __________ ______ (十分鐘的旅程). 6. According to the rules, if you are _______ ________ ______ _____ (十八歲以下), you aren’t admitted into the club. 7. Tom looked quite healthy though he was ____ ____ ________ (七十多歲了).,in his seventies,a ten-minute trip,eighteen years old,under,