appear to have been的用法1.the dinosaurs appear to have been relatively smart2.the Neanderthals appear to have been equipped to face any obstacle the environment could put in their pathdinosaurs 和 neanderthal(智人)都是过去的事情,为什么要用现在完成时呢?句2中为什么要用been equipped作被动呢,我觉得equip应该是neanderthal的主动行为
问题描述：
appear to have been的用法
1.the dinosaurs appear to have been relatively smart
2.the Neanderthals appear to have been equipped to face any obstacle the environment could put in their path
dinosaurs 和 neanderthal(智人)都是过去的事情,为什么要用现在完成时呢?
句2中为什么要用been equipped作被动呢,我觉得equip应该是neanderthal的主动行为
答
首先 appear to be 是固定用法,显得/好像是/似乎的意思.此处两句句子是科普知识内容,讲述的是客观的一些科学理论,所以选择一般现在时描述.用appear. 但是恐龙和智能都已灭绝,所以be动词形式采取了have been表完成.类...