Do exercises is a good way to keep healthy.这句话错在哪.
问题描述：
Do exercises is a good way to keep healthy.这句话错在哪.
答
动词原形不可以做主语，Do要改成Doing!
答
有do就不能用is
is exercise a good way..
答
doing改成do,用法是动名词作主语.
答
主语要是Doing 或To、主语必须是名词典、或＝名词的词、比如doing、（动名词）、所以最好是Doing做主语