OG13 76题求助！

76. Combining enormous physical strength with higher
intelligence, the Neanderthals appear as equipped for
facing any obstacle the environment could put in their
path, but their relatively sudden disappearance during
the Paleolithic era indicates that an inability to adapt
to some environmental change ledto their extinction.

答案是B，我选了C。
OG解释说"because Neanderthals "disappeared", the verb describing their apparent abilities cannot be present tense, so as equipped must be changed to to have been equipped" 这个不太理解哦。

作为智慧和力量的结合体，尼安德塔人具备面对任何困难的能力，但是他们突然的消失表示他们还是存在某种适应能力的欠缺。
首先看到indicates，可以确定appear一定是现在时。然后你要注意划线外的部分。最后有一个led有没有。环境的变化led他们消失了，他们必须是在环境变化之前就have been equipped不是吗？

C项的appear as equipped to face 这个成分怎么理解呢？equipped是过去式？过去式为什么不对呢~

我没说equipped是过去式哟~

一定要研究语法结构的话这个叫做The perfect infinitive

v. to+HAVE DONE用来区分动作发生的先后顺序，如He pretended to have seen the film.["pretended" describes a past condition; "to have seen" describes something prior to that time.]  即，你骗你朋友说，你和胡书记有合影。那么，theoretically你和胡书记合影的动作必须必须必须发生在你骗你朋友之前，不然就不科学了。

如果非要用过去式，这里也应该是appear to be equipped。 appear as + adj同样不科学。