以下是引用HHB在2005-7-5 7:31:00的发言：113. Visitors to the park have often looked up into the leafy canopy and saw monkeys sleeping on the branches. whose arms and legs hang like socks on a clothesline. (A) saw monkeys sleeping on the branches, whose arms and legs hang (B) saw monkeys sleeping on the branches, whose arms and legs were hanging (C) saw monkeys sleeping on the branches, with arms and legs hanging (D) seen monkeys sleeping on the branches, with arms and legs hanging (E) seen monkeys sleeping on the branches, whose arms and legs have hung 答案是D。 我对答案没有异议；只是不明白为什么题目中的时态是现在完成时。请教大家！
时态这种东西绝大多数都必须通过上下文才能完全清晰。
不过就这个句子来说，不妨考虑这个场景：一位导游向游客介绍这个景点，就可以用这句话。意思是来过这里的游客看到过猴在树上睡觉，云云……
类似的用法屡见不鲜，尤其是说道，看见过，听到过,此类曾经的动作的时候，用现在完成时是非常标准的。一个曾经举过的例子：
I have seen wolves in that forest. 如果改成 I saw wolves in that forest. 意思就全变了。 | 
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发表于 2005-7-5 07:31:00
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