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题目
题型:不详难度:来源:
A man does not know the difficulty of anything _______ he does it personally.
A.although B.if C.because D.unless

答案
D
解析

试题分析:A. although尽管,引导让步状语从句,一般置于句首,用逗号隔开;B. if假如,尽管,是否C. because 因为,引导原因状语从句;D. unless除非,否则;句意:一个人不可能知道所有事情的难度,除非他亲自动手做它。故选D.
点评:本题注意although引导让步状语从句时不能倒装,而if引导让步状语从句,习惯将表语提前,构成倒装,如果表语是单数可数名词要省略不定冠词。uunless一词前面常要有否定意义的词,句意才符合逻辑。例如:We will easily become unhappy unless we deal with our problem well.
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试题【A man does not know the difficulty of anything _______ he does it personally.A.a】;主要考察你对连词等知识点的理解。[详细]
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