指人时用who, whom和whose；指物时用which。that不引导非限制性定语从句。

　　This is our headmaster, who I think has something important to tell you.

　　这是我们的校长，我认为他有重要的事情要告诉你。

　　Football, which is a very interesting game, is played all over the world.

　　全世界的人们都在踢足球，这是一项非常有趣的运动。

　　2．引导非限制性定语从句的关系副词

　　当先行词指时间时，关系副词用when；指地点时用where。why不能引导非限制性定语从句。

　　We will put off the outing until next week, when we won't be so busy.

　　我们将把郊游推迟到下个星期，那时我们就不会那么忙了。

　　Chaplin lived the last years of his life in Switzerland, where he was buried in 1977.

　　卓别林在瑞士度过了他的晚年，1977年他被安葬在那里。

　　集中演练1

　　1－1.用适当的关系词填空

　　①They have again invited me to visit their country, which is very kind of them.

　　②The leader of the team is a 44­year­old Frenchman, whose wife is also a team member.

　　③I'm to fly to Kunming, where it is warm in this season.

　　④He said he would come to my house to see me tomorrow afternoon, when I will have some other friends to play together.

　　⑤The house was full of children, ten of whom were that old man's own grandsons.

　　1－2.完成句子

　　⑥大姐成了一名医生，我原来也想做一名医生的。

　　My elder sister has become a doctor, which I wanted to be.

　　⑦他于1992年离开家乡，当时他只有12岁。

　　He left his hometown in 1992, when he was only 12 years old.

　　⑧很爱他的母亲去年去世了。

　　Her mother, who loved him very much, died last year.

　　⑨他提到过一个笔友，他的名字我从未忘记。

　　He spoke of a pen­friend, whose name I've never forgotten．

　　⑩很多孩子上日间托儿所，在那儿他们可以学习游戏。

　　Many children go to a day care center, where they can learn games．

　　3．as和which引导的非限制性定语从句的区别

　　两者引导非限制性定语从句时先行词都是整个主句，有下面三处不同：

(1)as在非限制性定语从句位置比较灵活，可以放在主句之前，也可放在主句之后，