The risks of disqualification and bodily damage seem to have little effect on some athletes. Perhaps the most famous of them all is ben Johnson. In 1988, this Canadian athlete became the fastest man in the record while doing so.
请问把while doing so改成从句，应该怎么改
參考答案:while this Canadian athlete was doing so
引导词+分词的情况是状语部分的主语同主句主语一致 且谓语部分有be动词时 省略主语和be动词 这个主句主语是this Canadian athlete 这是第三人称单数 而且根据句子看时态是一般过去时 所以加was 所以while this Canadian athlete was doing so
