[問題] 大全987- Q101

[dibert8]

101. 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.”
(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




Ans: A

句意不是很懂;為什麼用現在完成式?

[dibert8]

現在完成式表示過去完成的事情,現在仍然成立.
所以 a century {of case-by-case adjudication} has been necessary... 意思是需要一世紀的時間(1880~1980)去...;需求持續了一百年.

(B) being 多餘; 介係詞 of 拖了一個句子太沉重
(C) to be 多餘
(D) 現在式,表示事情未完成:現在還需要...(句意不合理)
(E) 未來式,跟題目的過去式沒有交集

[Frankts]

從白勇語法看到的 和大家分享一下
necessary的習慣用法 be necessary to do....
所以可以刪去B C E
而A和D的選項就只能從時態判別 如同dibert8大大所說