in doing sth和 doing sth 意思有什么区别,例句如下

题目

in doing sth和 doing sth 意思有什么区别,例句如下
he is on the right track in answering your question.
answering your question,he is on the right track.
两句话意思有区别吗

答案

意思虽然是一样的,但第一句话更正规一些.