----with the size of the whole earth,the highest mountain does not seem high at all.

问题描述:

----with the size of the whole earth,the highest mountain does not seem high at all.
1.Comparing 2.To compare 3.Compared 4.Having compared
,请问为什么要用过去分词?

每个非谓语动词都有其逻辑主语,一般是句子的实际主语.这儿的非谓语动词在为选定之前是‘compare’,它的逻辑主语是‘the hihgest mountain’,找出逻辑主语与该非谓语动词之间的语态关系后,得知该逻辑主语与非谓语动词之间是被动的,这样就选“3”(compared).
选项“4”受到时态影响,故不选.