as引导定语从句

1、as 引导定语从句 在定语从句中，一般的从句关系代词是在定语从句中，一般的从句关系代词是which、who、whom、that、 whose, 其代替主句中的人其代替主句中的人或物，在从句中做主语、宾语或定语。或物，在从句中做主语、宾语或定语。一、一、as引导限制性定语从句引导限制性定语从句主要结构有：主要结构有：the sameasasassuchassoas主句中出现主句中出现the same, as, such, so修饰先行词，需修饰先行词，需选择选择as做关系代词在定语从句中做主语或宾语。做关系代词在定语从句中做主语或宾语。1. Its the same person as we w

2、anted to find yesterday .我们昨天要找的是同一个人。我们昨天要找的是同一个人。2. Such girls as he knows are good at English .他所认识的女孩都擅长英语。他所认识的女孩都擅长英语。3. Do you have such books as we like ?你有我们喜欢那种书吗？你有我们喜欢那种书吗？4. She will marry as healthy a man as she can find .她将嫁给她能找到的任何一个有钱人。她将嫁给她能找到的任何一个有钱人。5. There is so warm a house as

3、 we want to live in .这里有如此暖和的房子，我们都想住在里面。这里有如此暖和的房子，我们都想住在里面。6. He has so difficult a problem , as none of us can solve .他有如此难的一个问题，我们没有人能解决。他有如此难的一个问题，我们没有人能解决。二、引导非限制性定语从句二、引导非限制性定语从句 as引导非限制性定语从句，指代整个主句内容，从句引导非限制性定语从句，指代整个主句内容，从句可置于句首，句中或句尾可置于句首，句中或句尾1 As everyone knows ,China is a beautiful coun

4、try with a long history .每个人都知道，中国是一个有着悠久历史的美丽国家。每个人都知道，中国是一个有着悠久历史的美丽国家。2 The earth , as we know , moves round the sun .地球，我们都知道，围着太阳转。地球，我们都知道，围着太阳转。3 Tom works hard and is willing to help others, as we all know.汤母工作努力，并且乐于助人，这一点我们都知道。汤母工作努力，并且乐于助人，这一点我们都知道。 非限制性定语从句中的谓语为被动式时，常非限制性定语从句中的谓语为被动式时，常用

5、用as做主语做主语 as be said/known/announced/reported/mentioned/expected/discussedGrammar , as has been said before, is not a set of dead rules.语法，就像以前所说，不是一套死规则。语法，就像以前所说，不是一套死规则。As is known to all , TaiWan is part of China . as引导非限制性定语从句，有引导非限制性定语从句，有“如，似，正像如，似，正像”的含义，因此，下列句式多用的含义，因此，下列句式多用as as has been

6、said above 如上所说如上所说 as anybody can see 正像每个人所看到的那样正像每个人所看到的那样 as we had expected 正如我们所预料的那样正如我们所预料的那样 The boy has as much progress as we had expected. 正像我们所预料的那样，这个男孩取得了大的进步。正像我们所预料的那样，这个男孩取得了大的进步。Practice1. It wasnt such a good dinner_ she had promised us. A) that B) which C) as D) what 2. Helen wa

7、s much kinder to her youngest child than she was to the others, _, of course, made the others jealous. A) who B) that C) what D) which 3. The British are not familiar with different cultures and other ways of doing things, _is often the case in other countries. A) as B) what C) so D) that 4. Some me

8、tals are better conductors of electricity than others, _means that the former have atoms that contain more free electrons than the latter. A) that B) this C) which D) it 5. I hope all the precautions against air pollution, _is suggested by the local government, will be seriously considered here. A) after