【正文】
。【點(diǎn)評(píng)】考查基數(shù)詞hundred的用法。hundred,百,基數(shù)詞,表示具體的數(shù)量,其前要用基數(shù)詞;hundreds of +可數(shù)名詞復(fù)數(shù),表示不確定的數(shù)量,固定短語(yǔ)。D.C.B.30.There were about six___________ students in the school building during the earthquake. A.表示一個(gè)人的年齡應(yīng)會(huì)使用基數(shù)詞,前面不需要冠詞,故答案是A。the twelve【答案】 A 【解析】【分析】句意:今天是我妹妹的生日。twelfthtwelves birthday today. She39。29.It39。A基數(shù)詞,二,B兩次,頻率副詞,C序數(shù)詞,第二,D第二個(gè)......,根據(jù) How often,可知提問(wèn)頻率,故用表示次數(shù)的詞,故選B。D.SecondB.Two主意結(jié)合語(yǔ)境思考問(wèn)題并解決問(wèn)題。一共十個(gè)人,七個(gè)是紐約的,剩下的三個(gè)就是波斯頓的,故答案是B。five【答案】 B 【解析】【分析】句意:——昨天多少美國(guó)學(xué)生來(lái)參觀(guān)了你們學(xué)校?——十個(gè),七個(gè)來(lái)自紐約,其他的三個(gè)來(lái)自波斯頓。fourthreetwo注意hundred,thousand,million的使用規(guī)則。million意思是百萬(wàn),當(dāng)和具體數(shù)字連用時(shí),不加s,后面也不加of; 而millions of意思是數(shù)以百萬(wàn)計(jì)的,固定短語(yǔ);前面有具體數(shù)字four,四,因此用million,故選A。D.C.B.26.The total number of the citizens in the city has increased to over four _________ this year. A. 【點(diǎn)評(píng)】考查分?jǐn)?shù)的表示方法。分?jǐn)?shù)的表示方法:分子要用基數(shù)詞;分母要用序數(shù)詞,當(dāng)分子大于1時(shí),分母要用復(fù)數(shù)。fourth fifths【答案】 B 【解析】【分析】句意:九年級(jí)有300名學(xué)生。fourth fivefour fifthsfour five注意分?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)。分?jǐn)?shù)的表達(dá):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),因此三分之二的英文是 two thirds;in the 2000s,表示21世紀(jì),故選A。two thirds。two third。two threes。two thirds。 of the students in our class were born in the注意序數(shù)詞的用法。第九,應(yīng)用序數(shù)詞ninth,且前面有物主代詞his修飾,所以不能加定冠詞the,故選B。D.C.B. birthday. A.23.Mr. King bought his son a new bike as a gift for his 【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。 22.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 person today as they did in 1910. A.21.Americans eat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.20.Last week, five ____ students took part in the sports meeting in our school