20．The number of people in the party _____fifty，but a number of them ____ absent for different reasons．（　�。�
A．were； wasB．was； wasC．was； wereD．were； were

分析 參加聚會(huì)人的數(shù)量有50個(gè)，但很多人由于各種原因都遲到了．

解答 答案：C
分析句意，the number of 做主語時(shí)，謂語需用單數(shù)，表示…的數(shù)量；a number of 做主語時(shí)，謂語需用復(fù)數(shù)，意思是大量的，兩個(gè)短語都需加可數(shù)名詞的復(fù)數(shù)形式；另外，be absent意思是缺席．

點(diǎn)評(píng) 考生需掌握the number of 做主語時(shí)，謂語需用單數(shù)，表示…的數(shù)量；a number of 做主語時(shí)，謂語需用復(fù)數(shù)，意思是大量的．

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