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,因此用million,故選B。21.About of the work will soon be finished. A.two threesC.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。 【點(diǎn)評(píng)】考查分?jǐn)?shù)詞的表達(dá)法。millionmillionsa millionmillions of【答案】 A 【解析】【分析】句意:這個(gè)城市市民總數(shù)今年已經(jīng)增長到了四百萬。 【點(diǎn)評(píng)】此題考查數(shù)詞。23.—How many American students came to visit your school yesterday? — Ten. Seven are from New York, and the other _____ are from Boston.A.B.C.D.;;;。 【點(diǎn)評(píng)】考查數(shù)詞辨析。24.— Dad, gone bad. — Well, we39。twothird。twothirds。two thirds, hasD.——我們最好快點(diǎn)吃掉其余的。分子大于一的分母用復(fù)數(shù);故排除A和D;分?jǐn)?shù)修飾名詞做主語時(shí),謂語動(dòng)詞與后面的名詞的數(shù)保持一致;apples是可數(shù)名詞復(fù)數(shù),故用動(dòng)詞原形。 【點(diǎn)評(píng)】此題考查數(shù)詞和主謂一致。25.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. whenB. whileC. untilD. 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。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。26.After the government carried out the twochild policy, she had a second child in her________. A.thirtiesC.the thirtieth【答案】 B 【解析】【分析】句意:政府的二胎政策放開后,她三十多歲生了二胎。s+整十?dāng)?shù)的復(fù)數(shù),表示在某人幾十多歲時(shí)。 【點(diǎn)評(píng)】考查整十?dāng)?shù)的復(fù)數(shù),注意整十?dāng)?shù)的復(fù)數(shù)的使用場(chǎng)合。ThousandB.Thousand of【答案】 B 【解析】【分析】句意:今年五一勞動(dòng)節(jié)那天,成千上萬的人參觀了重慶紅巖洞。 【點(diǎn)評(píng)】考查數(shù)字表達(dá)法辨析。28.There are abouteight hundredB.eight hundred ofD.hundred,百,與基數(shù)詞搭配時(shí),不用復(fù)數(shù)。 【點(diǎn)評(píng)】考查數(shù)詞用法。29.—Do you know the man ________ visited France in March? —Yes. He is our president. He said it was his ________ visit to France.A. fifththat。C. fivewhich。他是我們的總統(tǒng)。第一句是含有定語從句的主從復(fù)合句,先行詞指人,在句中作主語,關(guān)系詞用who或that,某人第幾次做某事用序數(shù)詞,故選A。注意定語從句的關(guān)系詞的使用和序數(shù)詞的用法。of our classmates wear glasses. —Oh, that39。three fourthB.third fourthsD.——噢,那真可怕。分子用基數(shù)詞,分母用序數(shù)詞,中間用連字符,若分子大于一,分母用復(fù)數(shù)形式。 【點(diǎn)評(píng)】考查分?jǐn)?shù)表達(dá),注意平時(shí)