fail to do sth和fail in doing sth的区别
问题描述：
fail to do sth和fail in doing sth的区别
答
He never fails to phone his mother on her birthday.每逢母亲过生日时,他都会打电话给她.\x0dThe chairman failed in trying to persuade the committee to share his opinion.主席未能说服委员会同意他的观点.