A. | are; has | B. | is; has | C. | are; have | D. | is; have |
分析 --讀新聞!許多的大象由于象牙別殺死.
--那些人那么殘忍!最近大象的數(shù)量已經(jīng)下降了50%.
解答 答案:A.考查系動(dòng)詞及時(shí)態(tài).句意"--讀新聞!許多的大象由于象牙別殺死.--那些人那么殘忍!最近大象的數(shù)量已經(jīng)下降了50%.".第一個(gè)空,a number of意為"許多的",后接復(fù)數(shù)名詞,作主語(yǔ)時(shí),謂語(yǔ)動(dòng)詞常用復(fù)數(shù)形式,表示客觀事實(shí)用一般現(xiàn)在時(shí)態(tài),因此用be動(dòng)詞復(fù)數(shù)are.第二個(gè)空,the number of表示"…的數(shù)量",跟復(fù)數(shù)名詞連用作主語(yǔ)時(shí),中心詞是number,謂語(yǔ)動(dòng)詞要用單數(shù).結(jié)合語(yǔ)境,已經(jīng)下降,用現(xiàn)在完成時(shí)態(tài),have/has+done.因此用has.答案是A.
點(diǎn)評(píng) 考查系動(dòng)詞及時(shí)態(tài),此題要分清a number of和the number of的區(qū)別.結(jié)合語(yǔ)境選擇合適用法,注意謂語(yǔ)單復(fù)數(shù)及時(shí)態(tài)的變化.
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