由大全157到seem的用法

1.        Balzac drank more than fifty cups of coffee a day and died of caffeine poisoning; furthermore, caffeine did not seem to bother Samuel Johnson, the great writer and lexicographer, who was reported to have drunk twenty-five cups of tea at one sitting.

(A) furthermore, caffeine did not seem to bother

(B) however, caffeine did not seem to bother

(C) however, caffeine did not seem to have bothered

(D) furthermore, caffeine did not seem to have bothered（B）

(E) in addition, caffeine did not seem to bother

jnlvo斑竹的注释为：

Q: C为什么错。

A: 跟claim等不一样，seem不是个实意词，不存在过去的过去这个概念，只有过去的概念，有网友找过一直未发现seemed to have done这种表达方式。

同时：

seem to have done的例子有，如下：

1)The factors favoring unionization drives seem to have been either the presence of large

numbers of workers, as in New York City, to make it worth the effort, or the concentration

of small numbers in one or two locations, such as a hospital, to make it relatively easy.

2)However, recent scholarship has strongly suggested that those aspects of early New

England culture that seem to have been most distinctly Puritan, such as the strong religious

orientation and the communal impulse, were not even typical of New England as a whole,

but were largely confined to the two colonies of Massachusetts and Connecticut.

3)Within the larger framework of American colonial life, then, not the Southern but the Puritan

colonies appear to have been distinctive, and even they seem to have been rapidly

assimilating to the dominant cultural patterns by the late Colonial period.

4)Such criticisms seem to have had a paradoxical result, for they apparently reinforced the

professional solidarity of lawyers at the expense of the enforcement of ethical standards.

5) Professional organizations of medieval civil lawyers seem to have maintained stricter

ethical standards for their own members than did professional organizations of medieval

canon lawyers.

针对以上两种相反的解释，seem后接不定式的用法是怎样？谢谢。

another one:

The Western world’s love affair with chocolate is well-documented: few people have been known to have tasted it for the first time without requesting more.

(A) few people have been known to have tasted it

(B) few having been known to taste it

(C) it has been tasted by few people

(D) few people have been known to taste it（D）

(E) few people having tasted it

我认为， tony6举的两个例子，不用完成时，是因为这两句话的本意都是否定的，实际上seem和known后面的成分所描述的事情从来没有发生过，当然不可能有一个确定的时间段（如“过去的过去”）。而其它的例子用完成时的，是肯定句式，即在猜测的前提下（seem to, appear to)，事情已经发生。

再看以下两句摘自英汉词典的例句：

Danger seems to attend everything they have tried.
他们所尝试做的每件事似乎都带有危险性。
The headmaster seems to be a fixture in the school for quite a long period.
校长似乎固定在这个学校工作很长一段时间了。

以上表现在完成时态，但是没有用have。

这样，是不是可以理解作：否定的意义中，seem后面必须省略have；而肯定的意义中，表“现在完成”的动作，可以省略have，而表“过去完成”的动作要保留have？

只是我的一孔之见，如有谬误，请牛牛们谅解。

"不用完成时，是因为这两句话的本意都是否定的" - doesn't sound right.

10.   The fear of rabies is well founded: few people are known to recover from the disease after the appearance of the clinical symptoms.

(A) few people are known to recover from the disease after the appearance of the clinical symptoms

(B) few people are known to have recovered from the disease once the clinical symptoms have appeared

(C) there are few known people who have recovered from the disease once the clinical symptoms have appeared

(D) after the clinical symptoms appear, there are few known people who have recovered from the disease（B）

(E) recovery from the disease is known for only a few people after the clinical symptoms appear

我认为这个应该从意义上去理解。大家有没有注意用完成时和一般时的意义不一样。

更重要的是好像如果要表达的完成的意义对句子不是很重要的时候或者可有可无的时候，题目就尽量避免用完成时，而尽量选用一般时。大家可以再看一下题目的意思。

一点拙见，请批评指正。多谢……