at these words和with these

题目

at these words和with these
___ these words,Mike knew that this must be the man who had robbed the woman of her money.
填at还是with,两者有什么区别?

答案

填at at the words相当于on hearing the words,“听到这些话,他知道这人就是那个抢劫犯”
又如 at the news she broke into tears 听到消息她哭了
with伴随,with the words of goodbye,she left without turning her head again,说了告别的话,她就走了,
所以这一句不适合用with