这里两个句子主要区别在时态问题上.
the professor is proving his theory to his students.这一句是正在进行时
the professor proves his theory to his students.这一句是一般现在时态.
如果用prove直接做谓语动词,那样的话,表达的时态就不一样了.
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the professor is proving his theory to his students这句不能这样吗.the professor proves his theory to his students.用prove直接做谓语动词
the professor is proving his theory to his students这句不能这样吗.the professor proves his theory to his students.用prove直接做谓语动词.
英语人气：135 ℃时间：2019-09-05 00:54:12
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