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第六天是星期幾?——星期五。星期五是一周的第六天,因此使用sixth,故答案是B。6.My family lives on ________________ floor of the building. A.B.C.D.表示第幾層,用the+序數(shù)詞+floor,固定搭配,twelve,12,基數(shù)詞;twelfth,第12,序數(shù)詞,故選B。7.There are ______________ months in a year. December is the ______________ month of a year. A. twelveB. twelfthC. twelfthD. twelve【答案】 C 【解析】【分析】句意:一年有十二個(gè)月,十二月是一年中的第十二個(gè)月。故選C。注意twelfth的書寫。six thousandsB.six thousands ofD.數(shù)詞后thousand用單數(shù),thousands of,固定搭配,幾千個(gè),不與數(shù)字搭配;因此是six thousand或者thousands of,只有B對(duì),故選B。9.Every year, ________ books are given away to the poor children in the countryside. A.B.C.thousand和of 連用時(shí)要用復(fù)數(shù),thousands of,成千上萬的,固定短語,故選B。注意固定短語thousands of。hundreds ofhundredhundredshundred of【答案】 B 【解析】【分析】句意:有兩百名學(xué)生來自朝鮮。 【點(diǎn)評(píng)】考查整數(shù)的表達(dá)。11.Most of the doctors in this hospital were born ________, and they are ________now. A. in their fiftiesB. in the fiftiethC. in fiftiethin the 1970s。in the+四位數(shù)的整數(shù)復(fù)數(shù)形式,在……世紀(jì)……年代,in one39。 【點(diǎn)評(píng)】考查數(shù)詞,注意表示世紀(jì)和年齡的用法。s about ________________ kilometers from Nanchong to Chengdu. A.B.C.D.由句意可知,這里說的是“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。13.—____________of volunteers will be needed for the 2020 Olympic Games. —Let39?!屛覀?nèi)ゼ尤胨麄儼??!军c(diǎn)評(píng)】考查數(shù)詞,注意join sb的用法。thousand。B. Two thirdC. Two thirdsD. 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。four基數(shù)詞后用thousand的原形,分?jǐn)?shù)表達(dá)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。15.ThousandB.ThousandsD.橫線后面沒有具體數(shù)字,因此用thousands of,成千上萬的......,故選D。16.Basketball is so exciting that ______ people play it for fun. A.B.C.D.表達(dá)確切數(shù)字時(shí)用基數(shù)詞+million,表示幾百萬;表達(dá)非確切數(shù)字時(shí)用millions of,數(shù)百萬,故選D。17.Ten years ago the population of our village wasas twice large astwice as large astwice as much asas twice much as【答