知识改变命运，学习成就未来
高考英语必考句型讲与练十三
句型19
as引导的非限制性定语从句
在as引导的非限制性定语从句中，连接代词as在句子中可以作主语、宾语或表语等，可以指人或物。其在定语从句中的位置比较灵活，即可以在句子前面，在句子中间或句子末尾。常用的结构有：as we all know; as is well known to…; as is often the case; as is said/mentioned above; as has been said before; as I told you before; as is evident; as often happens; as can be seen; as is/was expected; as we expect; as I can remember等。
[注意1]as通常只指整个句子的内容，不表示部分内容。
[注意2]as引导的非限制性定语从句通常指“事先可以预料到的”“料想到的”，表达“好”的方面。
[注意3]as引导限制性定语从句时，常构成the same…as…; such…as…; so/as …as…等结构。在从句中既可以指人、物，也可以指整个句子。
[例句]
This is also part of your work, as I told you before. 我曾告诉过你，这也是你工作的一部分。
The man was a teacher, as was evident from his way of speaking. 从那人说话的样子可明显看出，他是个老师。
Such ideas as he hits on are worthless. 像他那样偶然想起的主意是无用的。 It’s the same story as I heard from her yesterday. 这故事跟我从她那儿听到的相同。 He will marry as pretty a girl as he can find. 他要尽可能找漂亮的女孩结婚。 Such people as have made great contributions to the world should be greatly respected. 那些对世界做出巨大贡献的人们应该受到极大的尊重。 [高考题回放]
1. _____ I explained on the phone, your request will be considered at the meeting.（2005浙江）
A. When B. After C. As D. Since 2. _____ is often the case, we have worked out the production plan.（2004江苏） A. Which B. When C. What D. As
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知识改变命运，学习成就未来
3. _____ is reported in the newspapers, talks between the two countries are making progress.（2004北京）
A. It B. As C. That D. What 4. _____ has been announced, we shall have our final exams next month.（2003上海春季） A. That B. As C. It D. What 5. The Beatles, _____ many of you are old enough to remember, came from Liverpool.（2006天津）
A. what B. that C. how D. as 6. Jenny was very sad over the loss of the photos she had shot at Canada, _____ this was a memory she especially treasured.（2006广东）
A. as B. if C. when D. where
[参考答案和提示] 1. C 2. D 3. B 4. B 5. D 6. A
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