新概念3的17课be carrying a third of its total capacity为何用进行时

新概念3的17课课文中It has been estimated that if the bridge were packed with cars, it would still only be carrying a third of its total capacity.这里用了虚拟语气,但 be carrying a third of its total capacity为何用进行时啊?

进行时是英语表达中表露情感的一种方式-------中国学生受考试的影响,大凡也就是知道进行时,大概就是‘进行’或者‘表将来’之类语法层面上的用法。此句所表达的情感就是:车挤满桥,桥‘这时也随之--这就有‘进行时’的节奏’达到··的容量。此句不用进行时也行。
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第1个回答  2013-06-30
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what?

追答

呵呵 飘过~~~

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