【正文】
【點(diǎn)評(píng)】考查數(shù)學(xué)詞的表達(dá),注意平時(shí)識(shí)記確切數(shù)字時(shí)用基數(shù)詞+million表示幾百萬(wàn);表示非確切數(shù)字時(shí)用millions of數(shù)百萬(wàn)的。D.million她十二歲了。s my sister39。s+整十?dāng)?shù)的復(fù)數(shù),表示在某人幾十多歲時(shí)。C.thirties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。D. untilB. when 【點(diǎn)評(píng)】此題考查數(shù)詞和主謂一致?!覀冏詈每禳c(diǎn)吃掉其余的。twothirds。gone bad. — Well, we39。26.— Dad, ;;;。C.25.—How many American students came to visit your school yesterday? — Ten. Seven are from New York, and the other _____ are from Boston.A.nintieth【答案】 B 【解析】【分析】句意:——嗨,杰克!放學(xué)后踢足球怎么樣?——我很樂(lè)意,但今天是我祖父的九十歲生日,我們要慶祝一下。B.s my grandfather39。 【點(diǎn)評(píng)】此題考查數(shù)詞。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)。three fourths;beD.C.B.22.About ______ of the earth ______ covered with water, but we have less and less available fresh water. A. 2000【答案】 A 【解析】【分析】句意:我們班大約三分之二的學(xué)生出生在21世紀(jì)。 2000 2000s 2000s 【點(diǎn)評(píng)】考查分?jǐn)?shù)的表達(dá)和be動(dòng)詞用法。Two fifths。Two fifth。Two fifth。Two fifths。根據(jù)可數(shù)名詞復(fù)數(shù)guests和 at least eight people dead and several others ,而其他幾個(gè)人失蹤 ,可知總?cè)藬?shù)不確定,因此用固定搭配dozens of,幾十,數(shù)詞的復(fù)數(shù)形式+of,表示概數(shù),故選A。C. guests sank in the Tigris River in central Baghdad late on Thursday, leaving at least eight people dead and several others missing. A.as twice much as【答案】 B 【解析】【分析】句意:十年前,我們村子的人口是他們的兩倍。twice as large as18.Ten years ago the population of our village wasThree fourths【答案】 D 【解析】【分析】句意:世界上四分之三的書報(bào)是用英語(yǔ)寫的。C. 【點(diǎn)評(píng)】考查數(shù)學(xué)詞表達(dá),注意平時(shí)識(shí)記。D.B. 【點(diǎn)評(píng)】考查介詞短語(yǔ),注意in one39。the fortiethfortiesthousand,千,其前有具體數(shù)詞修飾時(shí),用其單數(shù)形式,當(dāng)其前沒(méi)有具體數(shù)詞修飾時(shí),用其復(fù)數(shù)形式,且和of連用,thousands of,成千上萬(wàn),這里沒(méi)有具體數(shù)詞修飾,故選D。C.t wait to buy one in our town. A. 【點(diǎn)評(píng)】考查數(shù)詞的用法及固定搭配??栺R克思在他五十多歲時(shí)開始學(xué)習(xí)英語(yǔ)。 【點(diǎn)評(píng)】考查數(shù)學(xué)詞的表達(dá),注意平時(shí)識(shí)記表示確切數(shù)字用基數(shù)詞+million,表示幾百萬(wàn);表示非確切數(shù)字時(shí)用millions of,數(shù)百萬(wàn)。D.B.由句意可知,這里說(shuō)的是“兩百公里”two是基數(shù)詞表示確切的數(shù)字,不能用百、千的復(fù)數(shù)形式,“two hundred”;但當(dāng)基數(shù)詞表示不確切數(shù)字,百、千后就要用復(fù)數(shù)形式,如“hundreds of”,故選C。C.s about ________________ kilometers from Nanchong to Chengdu. A.基數(shù)詞放在名詞前修飾名詞,表示數(shù)量,因此用five;序數(shù)詞放在floor前面表示順序,因此用ninth,故選C。D. ninthB. nine表示數(shù)量246時(shí),百位與十位之間要用and連接,且hundred被具體數(shù)字修飾時(shí),用單數(shù)形