高考英语语法专题-定语从句中as的用法

1、定语从句中 as的用法Confidence comes from preparation！高考真题高考题型单项填空1. _ is known to everybody, the moon travels round the earth once every month.（2001，全国卷） A. It B. As C. That D. What2. _ is often the case, we have worked out the production plan. （2004，江苏卷） A. Which B. When C. What D. As3. The air quality in

2、the city, _is shown in the report, has improved over the past two months.（2012，福建卷） A. that B. it C. as D. what4. A lot of language learning, _has been discovered, is happening in the first year of life, so parents should talk much to their children during that period.（2012，安徽卷） A. as B. it C. which

3、 D. this考点解读知识框架：关系代词as既可以引导限制性定语从句也可以引导非限制性定语从句，并在从句中充当主语、宾语。能力要求：重点掌握as引导非限制性定语从句的用法。基础知识01as引导的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，即such / so (as) . as, the same . as .Eg. 1. They talked in such simple English as children could understand.2. There is so warm a house as we

4、want to live in. 3. The result is not the same as they had expected. as引导的限制性定语从句the same . as . 与 the same . that .Eg. I have the same book as he is reading.我有一本书，与他正在看的那一本相同。（两本书）I borrowed the same book that he did last week.我借了一本书，就是他上周借的那一本。（一本书）the same as 同一类人或物the same that 同一人或物 as引导的限制性定语从

5、句such / so as (引导定语从句)such / so that (引导状语从句)Eg. He is such a clever boy as everyone likes. He is such a clever boy that everyone likes him. as在从句中可充当主语、宾语等成分，that不充当成分； 句意不同。 as引导的非限制性定语从句1. As we all know, Taiwan is a part of China.2. The compass, as is well-known to all, was invented in ancient C

6、hina.3. He seems a farmer, as in actual fact he is. 从句可以位于句首、句中或句末，但习惯用逗号隔开。as在从句中可以作主语、宾语或表语；用作主语时，谓语动词用单数形式。as有“正如那样；像一样”的词义。as引导的非限制性定语从句as引导的非限制性定语从句的固定表达as anybody can seeas is often the caseas is known to all as you expectedas has been reportedas the saying goes正如人们所看到的那样情况往往如此众所周知如你所料据报道可知俗话说

7、as引导的非限制性定语从句 as 与 which的区别 As is known to all, the sun rises in the east. He failed in the exam, which made his parents very angry. as引导非限制性定语从句，指代整个主句的内容，可放在主句之前、之中或之后； which引导非限制性定语从句指代整个主句的内容时，只能位于主句之后。 能力提升02突破高考题型1语法填空短文改错2书面表达高考题型语法填空1. Such machines as are used in our workshop are made in Ch

8、ina.2. “You cant judge a book by its cover,” as the old saying goes. 3. Freeflyers, as the name suggests, enjoy the more spontaneous (自然的) thrill of doing their own things.高考题型短文改错1. It is such a beautiful village as I will never forget it. 2. Those who can achieve high grades in class tend to be weak in handling some practical problems, as are often the case.is高考题型书面表达1. As is known to us all, .（众所周知 .）2. As the old saying goes, .（俗话说 .）3. As is said/mentioned above, .（如上所 述 .）4