题目内容
4.It is reported that China will not buy the Euro debt until some thorough research ______.( )A. | has been done | B. | will have been done | ||
C. | will be done | D. | had been done |
分析 据报道,中国不会购买欧洲的债券,除非在做了一些彻底的研究之后(才有可能).
解答 答案:A.
本句中it为形式主语,that引导一个主语从句.在主语从句中又包含一个until引导的时间状语从句,因为主句中China will not buy the Euro debt为一般将来时,所以从句中的时态some thorough research…也应该是将来时态,但在状语从句中多用现在时来代替将来时,所以用现在完成时态来表达将来完成时态;而some thorough research与do之间为逻辑上的动宾关系,所以用被动语态.故选A.
点评 本题考查将来完成时的时态和语态,要了解各个时态的用法并结合具体的语境选择出正确的选项.
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