赖世雄教你学英语语法
关系词
1-5：which可代表整个句子
关系代词which若用以代替整个句子时，which之前一定要有逗点。
例：john，who was lazy，scored quite high marks on the exam，which somewhat surprised me．（约翰很懒却考得相当高分，这件事使我略感惊讶。）