running;running.第一个表示正在进行时，第二个表示看见某人正在做某事，
The girls of our class are running. They are watching them run.前一个表示现在进行时,后一个是他人在看着这些女生跑的这个过程.
running, running 因为前者是指正在跑步，所以用现在进行时；后者是指看某人作某事，是做事情的状态和过程。
running然后run
问：Mary is the shortest of the girls in the class
答：Mary is shorter than any other girl in the class. Mary is shorter than any of th...详情>>
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