(1)who指人,常在句中作主语。例如: The man who is shaking hands with my father is a policeman.正和我爸爸握手的那个人是警察。 (2) whom也指人,在从句中作宾语,常常可以省略。例如: The professor ( whom ) you wish to see has gone to Shanghai.你想见的那位教授已经去上海了。 (3)whose既可指人又可指物,在从句中常常作定语。例如: This is the woman scientist whose name is known all over the country. 这就是那位闻名全国的女科学家。 ……