通常用逗号与它所修饰的对象分开。e。 g。 1。 Do you know the teacher who spoke at the parents meeting just now? 2。 The book was written by Lu Xun, who was a great writer。 3。 They have invited some foreign friends to the Shanghai High School, which is famous both at home and abroad。 4。 Have you ever been to Sydney, which is the most exciting city in Australia?(三)