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掌握時(shí)代的表達(dá)方式。s fifties在某人五十多歲時(shí);故選D。In the 1870s, in his fifties【答案】 D 【解析】【分析】句意:在十九世紀(jì)七十年代,馬克思已經(jīng)五十歲了,他覺得研究俄國(guó)的形勢(shì)很重要,便開始學(xué)習(xí)俄語。In the 1870s, in fiftiesB.In 1870s, in his fifties 【點(diǎn)評(píng)】考查分?jǐn)?shù)的寫法,注意用英語表達(dá)分?jǐn)?shù),分子使用基數(shù)詞,分母使用序數(shù)詞,如果分子不是一,分母是用復(fù)數(shù)形式??疾榉?jǐn)?shù)的寫法,用英語表達(dá)分?jǐn)?shù)時(shí),分子使用基數(shù)詞,分母使用序數(shù)詞,如果分子不是一,分母使用復(fù)數(shù)形式?!?,太可怕了。D.C.B.s terrible. You thirty boys should take care of your eyes.A.注意hundred,thousand和million的使用規(guī)則。thousand千,有具體的數(shù)字修飾需用原形;和of連用則用復(fù)數(shù)形式,意思是成千上萬的,前面沒有具體的數(shù)字,因此用復(fù)數(shù)形式,故選B。C.Thousands of28._______people visited Hongyadong, Chongqing on May Day this year. A.數(shù)詞+hundred,幾百,用hundred 的單數(shù)形式,hundreds of,好幾百,不和數(shù)詞搭配,故排除B和D;進(jìn)入山谷和看見蝴蝶之間是并列關(guān)系,因此用when, 當(dāng)……時(shí),while表對(duì)比,until與not連用,if表假設(shè),均不符題意,故選A。 if【答案】 A 【解析】【分析】句意:在云南省,有一個(gè)以蝴蝶聞名的山谷。D. untilC. whileB. when27.In Yunnan province, there is a valley famous for its butterflies. You will see over four _______kinds of butterflies flying around ________ you get into the valley. A.在20世界80年代,固定搭配,in the 1980s,his是限定詞,其后是序數(shù)詞,故選D。the 1980s, first【答案】 D 【解析】【分析】句意:倫納德20世紀(jì)80年代出生于洛杉磯。1980s, firstthe 1980s, the first1980, the first注意序數(shù)詞的拼寫和用法。表示某人多少歲的生日,是第幾個(gè)生日,應(yīng)該用序數(shù)詞,第九十,ninetieth,故選B。C.ninetieths ______ birthday and we will have a celebration. A.d love to, but it39。 【點(diǎn)評(píng)】考查分?jǐn)?shù)詞的表達(dá)法。two thirds【答案】 D 【解析】【分析】句意:大約三分之二的工作將很快被完成。C.two threes of the work will soon be finished. A.24.About根據(jù)語境可知第三屆文化節(jié),是第三次,要用序數(shù)詞the third,三個(gè)活動(dòng),表示數(shù)量;要用基數(shù)詞three,修飾可數(shù)名詞復(fù)數(shù),故選C。 three【答案】 C 【解析】【分析】句意:——我們的學(xué)校打算舉辦第三屆文化節(jié)嗎?——是的。D. threeC. thirdB. thirdactivities.A. 【點(diǎn)評(píng)】考查倍數(shù)的表達(dá),注意倍數(shù)+as+形容詞+as的用法。three times more cars than【答案】 B 【解析】【分析】句意:在引進(jìn)新設(shè)備后.我們的工廠在2004年的產(chǎn)量是前一年的三倍。three times as many carsC. in 2004 as the year before. A.22.Having introduced the new equipment, our factory turned out 【點(diǎn)評(píng)】考查分?jǐn)?shù)的表達(dá)和be動(dòng)詞用法。分?jǐn)?shù)由基數(shù)詞和序數(shù)詞構(gòu)成,分子用基數(shù)詞,分母用序數(shù)詞,分子大于1時(shí),分母用復(fù)數(shù),所以五分之二的表達(dá)為two fifths。Two fifths。Two fifth。Two fifth。Two fifths。 21.more than twice,表示數(shù)量,放在as … as結(jié)構(gòu)前,是……的兩倍多,故選D。D.twice as many asB. vegetables per pers