题目内容
3.Another two months will be needed before the new bridge ________.( )| A. | completes | B. | is completed | ||
| C. | has completed | D. | will be completed |
分析 在那架新桥完成前还需要两个月.
解答 答案:B.句中before表示"在…之前".说明两个事件之间的先后关系,通过句意"在新桥被完成前,还需要两个月"和谓语动词will be needed,可推断都是描述的将来的事情,又因为主将从现原则,主句是一般将来时,从句用一般现在时表示将来,主语"the new bridge"新桥,是谓语动词"complete"完成的承受着,当句子的主语是动作的承受者时,应该用被动语态,所以空格处是一般现在时的被动语态(am/is/are+done),主语the new bridge 是第三人称单数,所以答案选B.is completed.
点评 根据句意分析清楚句子的语态,根据时间状语判断句子的时态,注意有时需要遵循主将从现的原则
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