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002年。D.C.B.of the students were born in 2002. A.20.There are 300 students in Grade Nine. About 倍數(shù)+as+形容詞+as+,……是……倍,固定搭配,故選B。as many cars as three rimesD.cars three times as many asB.分子用基數(shù)詞,分母用序數(shù)詞,分子大于1時,分母用復(fù)數(shù)。with,覆蓋;句子中的water 是不可數(shù)名詞,系動詞要用is,故選B。three fourths;be are【答案】 B 【解析】【分析】句意:地球的四分之三被水覆蓋,但是我們的淡水資源越來越少。D. areC. isB. is18.About ______ of the earth ______ covered with water, but we have less and less available fresh water. A.根據(jù)句子前面有five,可知hundred后面不加s,hundreds of和thousands of前面不用數(shù)詞修飾,故選B。D.C.B.17.Last week, five ____ students took part in the sports meeting in our school A.表示確切數(shù)字時用基數(shù)詞+million,幾百萬;表示非確切數(shù)字時用millions of,數(shù)百萬的,固定搭配,故選B。D.C.B.s got ______________ them. A.注意其作主語時謂語動詞形式的選擇。五分之三的正確表達是three fifths;帶有分數(shù)的短語作主語時,謂語動詞由分數(shù)后面的名詞形式來決定,students是復(fù)數(shù)形式,謂語動詞要用are,故選D。 are【答案】 D 【解析】【分析】句意:我們班五分之三的學(xué)生是女生。D. isC. areB. isgirls. A.15.In our class four基數(shù)詞后用thousand的原形,分數(shù)表達形式是分子是基數(shù)詞,分母是序數(shù)詞,分子大于一,分母用復(fù)數(shù)形式,故三分之二是two thirds , 故選A。 Two third【答案】 A 【解析】【分析】句意: 我們學(xué)校的學(xué)生人數(shù)大約是四人。D. Two thirds Two thirdC.B.thousand。 分子大于1時,分母需要用復(fù)數(shù)。 【點評】考查分數(shù)的表達方法。 分子大于1時,分母需要用復(fù)數(shù)。fifty【答案】 C 【解析】【分析】句意:在烏克蘭,五分之一的人口是俄羅斯人。C.fiveth13.In the Ukraine(烏克蘭), a ________ of the population are Russia speakers. A. 【點評】考查數(shù)詞和被動語態(tài)。 invited【答案】 B 【解析】【分析】句意: 兩百名學(xué)生被邀請參加了上周五的開幕式。D. invited were invitedC.B. were invited12.Two ________ students ________ to the opening ceremony last Friday. A.ten10,基數(shù)詞,所以用ten million,排除A、B,故選D。millions of【答案】 D 【解析】【分析】句意:2010年,來自世界各地的數(shù)百萬人來到上海觀看世博會。million often millionsten million of 【點評】考查基數(shù)詞的用法,注意表示確切的數(shù)字時,其后不能用百、千的復(fù)數(shù)形式。two hundred of【答案】 C 【解析】【分析】句意:從南昌到成都大約有兩百公里。two hundredtwo hundreds oftwo hundreds10.It39。the+序數(shù)詞,表示第幾,故選C?!鞘钦媪钊伺d奮。C.seventeens really exciting. A.9.—We