1.关系代词引导的定语从句
关系代词who，whom，whose，that，which，as引导的定语从句是写作的一大重点，尤其是which和as引导的非限制性定语从句在高考范文中更是常见。
(1)I have already been a volunteer for the 13th National Games which will be held at the end of August in Tianjin.
我已经是八月底将在天津举行的第十三届全运会的志愿者了。(2017·天津)
(2)There is no doubt that you are supposed to know about the history of the Tang Dynasty in advance，which will make the class go smoothly.
毫无疑问你应该提前了解唐朝的历史，这会使得课程进展顺利。(2017·全国Ⅰ)
(3)Any student who is interested is welcome to participate.欢迎任何感兴趣的同学参加。
(2016·全国Ⅱ)
