关于时态的判断--语法分册第12页15题

寂寞的自由 · 发表于 2003-12-4 12:21:00

18．???Although the Supreme Court ruled as long ago as 1880 that Blacks could not be excluded outright from jury service, nearly a century of case-by-case adjudication has been necessary to develop and enforce the principle that all juries must be drawn from“a fair cross section of the community.” B--àA(A) has been necessary to develop and enforce the principle that all juries must be(B) was necessary for developing and enforcing the principle of all juries being(C) was to be necessary in developing and enforcing the principle of all juries to be (D) is necessary to develop and enforce the principle that all juries must be (E) will be necessary for developing and enforcing the principle of all juries being

从哪里判断必须用现在完成时态呢？为什么D不对呢？谢谢大家

寂寞的自由 · 发表于 2003-12-8 15:47:00

18．???Although the Supreme Court ruled as long ago as 1880 that Blacks could not be excluded outright from jury service, nearly a century of case-by-case adjudication has been necessary to develop and enforce the principle that all juries must be drawn from“a fair cross section of the community.” B--àA
(A) has been necessary to develop and enforce the principle that all juries must be
(B) was necessary for developing and enforcing the principle of all juries being
(C) was to be necessary in developing and enforcing the principle of all juries to be
(D) is necessary to develop and enforce the principle that all juries must be
(E) will be necessary for developing and enforcing the principle of all juries being
大家给些意见好吗？这个答案是A，我选的是B，请问大家怎么考虑这个题，特别是时态问题，谢谢大家

寂寞的自由 · 发表于 2003-12-13 15:15:00

大家帮忙解释一下吧，谢谢！！！

lizaz · 发表于 2003-12-13 15:26:00

nearly a century表示大段的时间概念，是现在完成时的标志。

寂寞的自由 · 发表于 2004-1-8 13:26:00

谢谢楼上的朋友！

关于时态的判断--语法分册第12页15题

关于时态的判断--语法分册第12页15题

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