定语从句关系代词as的用法,考点透视 考纲定位和能力要求：重点掌握as引导非限制性定语从句的用法。,一、as 引导限制性定语从句当先行词前有such, so, the same修饰，同时定语从句缺少主语或宾语时，应使用关系代词as， 例如：,温馨提示：要注意such/ soas 引导的定语从句与such/ sothat 引导的状语从句的区别。例如：,典题直击The book is written in _ easy English _ beginners can understand.,D,二、as引导非限制性定语从句当as引导非限定从时，先行词为整个句子，同时在从句中担当主语或宾语的成分，可以翻译成“正如”，例如：,注意事项：1. as引导非限定从与which的区别。1）As we know, he is an honest person.=,【总结】1.位置上的不同：当先行词为一句话，as引导的非限定从可以放在主句后，主句前，或者把主句拆分，放在中间；而which引导的非限定从只能放在主句后。,2. as 引导非限定从与主语从句的区别。As is known to all, the earth travels around the sun.,典题直击1. There is no simple answer, _ is often the case in science.,A,典题直击 2. A lot of language learning, _has been discovered, is happening,A,典题直击3. _ is reported in the newspapers, talks between the,B,能力突破1. The air quality in the city, _ is shown in the report, has,C,能力突破 3. “You cant judge a book by its cover,”_.,C,备考指津1. 对于as引导定语从句的用法，高考重点考查的是as引导非,谢谢您的观看！,