作为关系代词“who”与“that”的用法有何区别？

Question

详细+例题！

Answer 1

楼主，您好(1) 两者均可指人，有时可互换： All that [who] heard him were delighted. 所有听了他讲话的人都很高兴。Have you met anybody that [who] has been to Paris? 你遇见过到过巴黎的人吗?
He is the only one among us that [who] knows Russian. 他是我们中间惟一懂俄语的人。(2) 但是在下列情况，通常要用 that：①当先行词是一个既指人又指物的并列词组时：I made a speech on the men and things that I had seen abroad. 我就我在国外所见到的人和事作了报告。who时(为避免重复)：Who that has sympathy can laugh on that occasion? 有同情心的人谁会在那个时候发笑呢?③当关系代词在定语从句中作表语时(可省略)：Tom is not the boy (that) he was. 汤姆这孩子已不是以前那个样子了。
谢谢采纳！