“ Although , the boy said , “ over and over , the maths problem remained confusing to me . A．explainedB．explainC．explainingD．having explained 题目和参考答案——青夏教育精英家教网—

题目内容

“ Although ,” the boy said , “ _______ over and over , the maths problem remained confusing to me ” .

A．explained	B．explain
C．explaining	D．having explained

解析试题分析：这题考查非谓语动词和省略式，当主从句的主语一致时，可以省略从句的主语和be动词，the boy said ,是插入语，暂且不看Although explained over and over=" Although" ,the maths problem was explained over and over，句意是：男孩说：虽然这个数学问题被解释了一遍又一遍，它对我来说还是不理解。选A。
考点：考查非谓语动词和省略
点评：英语的省略式的一种就是从句的省略，条件是主从句的主语要一致，然后考虑谓语和逻辑主语的关系，决定是现在分词还是过去分词。

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A. pleasant B. comfortable C. thankful D. free

A. laid B. left C. washed D. put

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A. new B. cool C. fresh D. warm

A. when B. until C. while D. after

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A. and B. but C. or D. so

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