It is a common sense that new ideas have to be tested many times before fully accepted．before 后加being．题目和参考答案——青夏教育精英家教网—

11．It is a common sense that new ideas have to be tested many times before fully accepted．before 后加being．

分析新观点在被完全接受之前必须经过多次的检验，这是一个常识．

解答 8．before 后加being 这里是一个由that引导的主语从句，it是形式主语，真正的主语在that的后面，从句的主语是new ideas，与accept构成逻辑上的被动关系，表示"观点被接受"，因此要使用被动语态（be+done），这里accepted前面缺少一个be动词来构成被动语态，又因为before是介词，后要加动词ing形式，故在before后面加being．

点评考查被动语态的用法，结构须牢记．

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