213. The Federalist papers, a strong defense of the United States Constitution and important as a body of work in political science as well, represents the handiwork of three different authors.
A. and important as a body of work in political science as well, represents
B. as well as an important body of work in political science, represent
C. and also a body of work of importance in political science is representing
D. an important body of work in political science and has been representative of
E. and as political science an important body of work too, represent
Choices A, C, and D contain singular verbs that do not agree in number with the plural subject, papers. Furthermore, A violates parallelism by aligning the adjective important with the noun defense; C, employing the present progressive tense, wrongly suggests that the triple authorship of The Federalist papers is a developing situation rather than an accomplished fact; and D, employing the present perfect tense, suggests that the situation of triple authorship is no longer the case. D is also garbled syntactically because the conjunction and has been misplaced. In E, the wording is awkward. Choice B is best.
Present Perfect tense 不是有延续至今的意思吗？ 为什么ETS说no longer the case呢?
Present Perfect tense 的意思是现在完成时，强调过去的动作延续至今，但这个动作或状态是否现在还进行或还存在，就有点争议了。比如，longman的两个例子：
I have been reading.我一直在阅读。（我现在还在阅读吗？）
I've written 2letters today.我今天写了两封信。（两封信写完了吗？）
个人觉得从义上两个例子，以及“现在完成时“这个词看，这个时态应当更加注重“完成“这一含义。不知道这么想的话，ets给不给过关。
学习中。。。。。
再想想的话，又觉得不对。
比如说：I have never seen him since then.那么没有见过他的这种状态到现在结束了吗？我觉得在口语中，实际用这句话时，可能结束了，也可能没结束。单凭这一句话是无法判断的。
要是严格的按语法来讲，只要已经见过他，这个状态就结束了，再要表达这个意思，就要用过去完成时。可实际使用中有这么复杂吗？ETS这里prefer?
现在完成时不表示任何对将来的预期。
楼上说是“口语中”，我们现在准备的GMAT的语法是书面语法。
看糊涂了。什么意思啊
谢谢，再解释一次把
got it
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