【正文】 【點評】考查基數(shù)詞，注意表達年齡時應(yīng)使用基數(shù)詞。 【點評】考查整十數(shù)的復(fù)數(shù)，注意整十數(shù)的復(fù)數(shù)的使用場合。 if【答案】 A 【解析】【分析】句意：在云南省，有一個以蝴蝶聞名的山谷。C.分子大于一的分母用復(fù)數(shù)；故排除A和D；分數(shù)修飾名詞做主語時，謂語動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)，故用動詞原形。two thirds, hasD.24．—Hi, Jack! What about playing soccer after school? —I39。a million are【答案】 B 【解析】【分析】句意：地球的四分之三被水覆蓋，但是我們的淡水資源越來越少。 . A.分數(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，分母用復(fù)數(shù)，所以五分之二的表達為two fifths。D.16．There are about two ________ students in the newly built school. A.fortieth注意識記thousand的用法。B.D.C.B.s never too old to learn. Karl Marx began to learn English in his ________. A. nineC.谷物雨通常在一年中的四月開始。7．Nowadays, ________ people like HUAWEI phones better, and about ________ of them are adults. A.six thousandss just a little smaller than the largest one in Wuhan. A. nine【答案】 B 【解析】【分析】句意：——你的女兒多大了 ？——九歲，昨天我們給她過了一個特殊的九歲的生日聚會。B.B.D.3．—How old is your daughter?— ______. We had a special party for her ______ birthday yesterday.A. ninth注意twelfth的書寫。D.the number of。five。11．It39。two hundreds often million of14．When Huawei P20 came out, ______ people couldn39。Three quarter 【點評】考查英文中分數(shù)的寫法。C.two third。注意分數(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，分母用復(fù)數(shù)。C.twelfth。C.ninetieth23．The total number of the citizens in the city has increased to over four _________ this year. A.three fourths。分數(shù)的表達：分數(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，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，故選A。 of the students in our class were born in the areC.英文中分數(shù)的表示方法，分子用基數(shù)詞分母用序數(shù)詞，分子大于一，分母應(yīng)加s。Third fourthsB.17．_________ of the world39。thousandsthousand of在某人五十多歲時是in one39。 【點評】考查基數(shù)詞的用法，注意表示確切的數(shù)字時，其后不能用百、千的復(fù)數(shù)形式。two hundred 【點評】此題考查數(shù)詞。B.fourththird故選C。C.六班，Class Six，專有名詞，六樓，the sixth floor，使用序數(shù)詞，故答案是A。Six。s her _____ time to get the first prize.A.——是的，這是她第六次獲得一等獎。 third ninth 【點評】考查數(shù)詞，注意基數(shù)詞和序數(shù)詞的用法。 fourfifthsa number of。空格前有定冠詞the與可數(shù)名詞單數(shù)month，要用序數(shù)詞。表示數(shù)量246時，百位與十位之間要用and連接，且hundred被具體數(shù)字修飾時，用單數(shù)形式。D.卡爾馬克思在他五十多歲時開始學(xué)習(xí)英語。fortiesD.a