四六级中五种倍数常见表示方法

英语自学网

　　1)、倍数＋形容词/副词比较级＋than
        　　【例如】The girl is ten times cleverer than her brother.
        　　2)、倍数＋as+形容词/副词/(名词)＋as
        　　【例如】
        　　His apartment is three times as large as that of mine. Americans eat( 　)as they actually need every day. (CET-4 1998,6)
        　　A) twice as much protein
        　　B) twice protein as much twice
        　　C) twice protein as much
        　　D) protein as twice much
        　　本题考查倍数的表达方法，正确形式应为：倍数＋as+形容词/副词/(名词)＋as，故答案为A.
        　　3)、倍数＋名词
        　　【例如】The sun is many times the size of the moon.
        　　4)、动词＋倍数
        　　【例如】The pants have shortened two times since they were bought.
        　　5)、动词+by+数词/百分比/倍数
        　　【例如】 The landlord wanted to raise the rent by a third. Between 1974 and 1997, the number of overseas visitors expanded (　 )27%. (CET-4 2000,1)
        　　A) by 　　B) for 　　C) to 　　D) in
        　　本题考查动词+百分比的表达方法，正确的连接词为by，故答案为A.