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【解析】【分析】句意:——爸爸,我們班有45名學(xué)生,所有的男孩戴眼鏡,占班級(jí)的三分之二。D.29.—Dad, there are 45 students in our class, all boys wear glasses, ________ of the whole class. —Oh, that39。28.thousandsB.注意基數(shù)詞和序數(shù)詞的構(gòu)成。twice as much as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。17.This cinema can offer 【點(diǎn)評(píng)】考查分?jǐn)?shù)表達(dá),注意平時(shí)識(shí)記其表達(dá)規(guī)則。C. 【點(diǎn)評(píng)】考查數(shù)詞,注意表示世紀(jì)和年齡的用法。12.Most of the doctors in this hospital were born ________, and they are ________now. A. 【點(diǎn)評(píng)】考查整數(shù)的表達(dá)。A: Third第三; B: fourth第四; C: fifth第五。故選D。first twotwo first.2.My family lives on ________________ floor of the building. A.the eightiethD.largest in Hubei Province? — Yes, of course. It39。7.There are 24 solar terms in a year. Grain Rain often starts in April, the ________ month of the year. A.C.B.D.Two fifths, is10.Please pass me ___book on the right. A.fourth 【點(diǎn)評(píng)】考查序數(shù)詞用法,注意序數(shù)詞后面加the?;鶖?shù)詞;,基數(shù)詞;,序數(shù)詞;,序數(shù)詞。 in their fifties【答案】 D 【解析】【分析】句意: 這家醫(yī)院的大多數(shù)醫(yī)生都出生于20世紀(jì)70年代,現(xiàn)在他們都是50多歲。C.Two【答案】 C 【解析】【分析】句意:在我們學(xué)校三分之二的老師是女老師。fiftyeight thousand, six hundred and twentysixD.thousands20.About ______ of the earth ______ covered with water, but we have less and less available fresh water. A.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)。B.s ______ birthday and we will have a celebration. A.B.表示確切數(shù)字時(shí)用基數(shù)詞+thousand,表示非確切數(shù)字時(shí)用thousands of。A number,three quarters【答案】 B 【解析】【分析】句意: 我們學(xué)校的教師總數(shù)是118人,其中有4分之1是女教師。C. 【點(diǎn)評(píng)】考查介詞短語(yǔ),注意in one39。the fortieth考查分?jǐn)?shù)的寫(xiě)法,用英語(yǔ)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。B.B.The number,first fourth 【點(diǎn)評(píng)】此題考查定語(yǔ)從句和序數(shù)詞。B.表示幾號(hào)樓,如果先說(shuō)building,那么后面的數(shù)字使用基數(shù)詞,如果數(shù)字在前就是用序數(shù)詞。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。SecondB.注意序數(shù)詞的拼寫(xiě)和用法。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。with,覆蓋;句子中的water 是不可數(shù)名詞,系動(dòng)詞要用is,故選B。 areD.根據(jù)故選A。 【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)。B.seventhTwo fif