【正文】
分子大于1時(shí),分母需要用復(fù)數(shù)。 【點(diǎn)評(píng)】考查分?jǐn)?shù)的表達(dá)方法。 分子大于1時(shí),分母需要用復(fù)數(shù)。fifty【答案】 C 【解析】【分析】句意:在烏克蘭,五分之一的人口是俄羅斯人。C.fiveth30.In the Ukraine(烏克蘭), a ________ of the population are Russia speakers. A.根據(jù) thirty boys,可知是三分之二,因?yàn)橐话愕陌嗳萘渴?550名學(xué)生,故答案是C。你們?nèi)畟€(gè)男孩應(yīng)該保護(hù)好自己的眼睛。three quarters【答案】 C 【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。two thirdsone thirdone fourth29.—Dad, there are 45 students in our class, all boys wear glasses, ________ of the whole class. —Oh, that39。two是確切數(shù)字,故選A。thousands of【答案】 A 【解析】【分析】句意:在新建立的學(xué)校里大約有2000學(xué)生。thousand ofthousandsthousand注意定語(yǔ)從句的關(guān)系詞的使用和序數(shù)詞的用法。第一句是含有定語(yǔ)從句的主從復(fù)合句,先行詞指人,在句中作主語(yǔ),關(guān)系詞用who或that,某人第幾次做某事用序數(shù)詞,故選A。他是我們的總統(tǒng)。which。 fiveC.that。 fifth27.—Do you know the man ________ visited France in March? —Yes. He is our president. He said it was his ________ visit to France.A. 【點(diǎn)評(píng)】考查數(shù)詞用法。hundred,百,與基數(shù)詞搭配時(shí),不用復(fù)數(shù)。D.eight hundred ofB.eight hundred26.There are abouts just 7:,故選C。才7點(diǎn)40。thirty【答案】 C 【解析】【分析】句意:——快點(diǎn)!火車將在8點(diǎn)鐘到達(dá)。C.twelves just 7:40.A.t worry! There39。25.—Hurry up! The train will arrive at 8 o39。倍數(shù)+as+形容詞+as+,……是……倍,固定搭配,故選B。as many cars as three rimesD.cars three times as many asB.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)。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。three fourths;be 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(lái)越少。D. areC. isB. is23.About ______ of the earth ______ covered with water, but we have less and less available fresh water. A. 【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.根據(jù)句意可知,這里考查的是表示倍數(shù)的句型,twice在這里的意思是兩倍,twice as…as,表示是……的兩倍,并且修飾人口眾多時(shí)用形容詞large或big,因此是twice as large as,故選B。D.C.B. that of theirs. A. 【點(diǎn)評(píng)】考查倍數(shù)的表達(dá)方式。more than twice as many【答案】 D 【解析】【分析】句意:美國(guó)人現(xiàn)在每個(gè)人吃蔬菜的比1910年的兩倍還多。as twice as manyC.more than twice 【點(diǎn)評(píng)】考查英文中分?jǐn)?shù)的寫(xiě)法。英文中分?jǐn)?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