To get a golden medal ,______.

问题描述:

To get a golden medal ,______.
A,hard training is needed B,it is necessary to train hard
C,one must train hard D,it needs hard training
为什么选C

首先这个句子是以不定式开头的,做的是表示目的的状语,但是句子必须要有主语,这三个选项里,就C选项的one可做主语,因为毕竟是(人)为了拿到金牌,所以得努力,B,D选项的主语是It(它)指物,只有C指人,懂了没?