Americans eat ____________(两倍多的蛋白质)they actually need every day.

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问题 Americans eat ____________(两倍多的蛋白质)they actually need every day.

选项

答案twice more protein than/three times as much protein as

解析 本题考查对倍数表达法的掌握。英语中表示倍数的方法一般有两种:一是“倍数+as much/many...+ as...”,表示“是...多少倍”;二是“倍数+more than+...”,表示“比...多多少倍”。本句中是表示“比实际需要多两倍”,其含义相当于“是实际需要的三倍”,故用第一种方式表达时,注意要用three times。
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