Question

______ from space, our earth, with water covering 70% of its surface, appears as a "blue planet"

A) Seeing              B) To be seen       C) Seen              D) Having seen

Answer 1

C。

解析:

句意：从太空上看，我们的地球，表面覆盖70%的水，所以看起来像“一个蓝色的星球”。这里当主语与谓语动词see之间不是主动的关系时，我们就应用过去分词来表示被动。反之则用现在分词。例如：The old man was fast asleep，holding a book in his hand. 老人很快睡着了，手里还拿着一本书(现在分词作伴随状语)。

Seen in this light, the matter is not as serious as people generally suppose．如从这方面看，这件事并不像人们普遍推测的那样严重(过去分词作条件状语)。see, feel等这类感官动词一般不用进行体即seeing，feeling来表示正在进行的动作。故没有see的现在分词形式作状语的情况。正确答案即为C项。