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.

来源:学生作业帮助网 编辑:六六作业网 时间:2024/10/06 00:41:01
In1929,threeyearsafterhisflightovertheNorthPole,theAmericanexplorer,R.E.Byrd,successfullyflewoverthe

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.
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.

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.
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.