In 1929,three years after his flight over the North Pole,the American explorer,
R.E.Byrd,successfully flew over the South Pole for the first time.为什么第一个用flight,第二个用flew.
人气：432 ℃ 时间：2020-04-08 07:55:21
解答
第一个是名词,第二个是动词过去式.前半个句子是个短语,不需要动词.
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