____ volcanoes now for many years, I am still amazed at their beauty as well as

题型：不详难度：来源：

____ volcanoes now for many years, I am still amazed at their beauty as well as their potential to cause great damage.

A．Studied

B．To study

C．Having studied

D．Studying

答案

C

解析

试题分析：句意：已经研究火山爆发这多年了，我仍然惊奇它们的美丽和它们引起大的威力的潜力。因为整个句子已经有谓语动词，所以空格处应该用非谓语动词，因为for many years说明study的动作先于谓语动词的动作发生，故用完成时，故选C。
点评：本题难度适中。非谓语动词是高中阶段的重难点之一，内容多又杂，不容易理解，需要考生有分析理解复杂的句子结构的能力。题目的设置注重了情景化和结构复杂化，加大了考生对题干句的理解难度。设问的角度呈现出多样化趋势，不仅仅是非谓语间的互相干扰。
即学即练：When I got off the bus, I found my pocket _________ and the money gone.
A. picked     B. stolen     C. missing      D. lost
解析：A。句意：考查过去分词作宾语补足语的用法，pick one’s pocket表示“偷了某人的钱包”。宾语和宾语补足语之间形成被动关系。故选A项。