[语法初识]

原句感知 自主探究 ①The Yangtze River, which is more than 6，000 kilometres long, is the third longest river in the world.

②Qingdao is a beautiful city, where I'll pay a six­day visit.

③Sun Yat­sen, who was the leader of the 1911 Revolution，first suggested the idea in 1919.

④They have a son and two daughters, all of whom live in the city.

⑤He lived in London for two months, during which time he learned some English.

⑥Lucy, whose parents had died, had to make a living by herself.

⑦He spoke to the girl (who was) from Paris.

⑧We said goodbye to Mr. Green, (who was) still busy at his office. 1.句①～⑥中关系词引导的均为非限制性定语从句。

2．句⑦⑧中都可以省略括号中的词，从而构成定语从句的缩略。 　　

　　[语法剖析]

语法点一 非限制性定语从句 　　

　　非限制性定语从句是指与主句关系不十分密切，只对主句中的先行词作补充说明作用的定语从句，常常单独翻译，没有它，主句意思仍然完整。其标志是主句和从句之间用逗号隔开。

1．引导非限制性定语从句的关系代词