题目内容
20.We have to take effective measures to put out the fire,or by the end of the week the forest __________destroyed completely.( )A. | had been | B. | has been | C. | will have been | D. | will be |
分析 我们必须采取有效措施来扑灭大火,否则截止到周末这片森林就会被彻底毁掉.
解答 答案:C.
根据时间状语by the end of the week 可知,指的是截止到将来的某个时间为止发生的动作,所以使用将来完成时,又根据主语the forest和destroy之间为逻辑上的被动关系,所以使用被动结构;故选C.
点评 对于动词时态的考查要搞明白每个时态的具体用法,尤其是要熟悉一些时态中的典型时间状语.
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