Hardly had he finished his speech_______the audience started cheering.
A. and B. when
C. than D. as
昨日答案:
_____from other continents for millions of years, Australia has many plants and animals not found in any other country in the world!
A. Being separated B. Having separated
C. Having been separated D. To be separated
解析：逗号后面的部分是主语，前面这一部分只能是状语。作为状语的非谓语动词逻辑上的主语应是主句上的主语，即‘Australia’。‘分割开’这个动作发生在很就以前，而且与其逻辑主语是被动关系，这样就需要用分词的完成被动式，所以选C。分词，不定式作状语时，应注意其自身的语法意义。同时耕具其与逻辑主语见的关系选择合适的语态形式。