as引导定语从句时的特殊用法.docVIP

as引导定语从句时的特殊用法 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。as可以在从句中作主语、宾语或表语。 1. as引导限制性定语从句 as引导限制性定语从句， 置于先行词之后，与其词义关系密切，不可分割。如： He is such a good boy as everyone likes.他是大家都喜欢的好孩子。 Such machines as are used in our workshop are made in China.我们车间使用的机器是中国制造的。 as 常见搭配： 1）such+（不定冠词+）名词+as引导的定语从句，意思是“像……一样的”。如： The little boy realized that there was no such a tank as he dreamed of after he got to the museum. 那个小男孩儿到了博物馆后才知道没有他所想象的那种坦克。 2）the same+名词+as引导的定语从句，意思是“同一类事/物”。如： Lao Li bought the same computer as I did. 老李买的电脑跟我买的一模一样。 1.as引导非限制性定语从句 as引导的非限制性定语从句，既可以放在主语之前，也可以放在主语之后。通常用于下列句型：as is know to all，as is said，as is reported，as is announced，as we know，as I expected如： As I expected, he got the first place again in this mid-term examination. 正如我所预料的那样，他在这次期中考试中又得了第一名。 2.as引导非限制性定语从句时与which的区别 1）当非限制性定语从句置于主语之前时，只能用as。如： As is known to us, the moon travels round the earth. 2）从句置于主语之后，且从句有否定词或表示否定意义时，只能用which。如： Tom was late for school this morning, which was unexpected. 汤姆今天迟到了，这让人觉得意外。 He drinks a lot every day, which his wife doesn’t like at all. 每天他都喝很多酒，他的妻子一点都不喜欢他这样。 3) 非限定性定语从句中出现expect , think , suppose 等表示猜测、想象、预料等时，只能用as She succeeded in her doing the research work , as we expected . 4)固定搭配：such/the same+as Exercises: 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 2. ________might be expected, the response to the question was very mixed. A) As B) That C) It D) What 3. I hope all the precautions against air pollution, ________suggested by the local government, will be seriously considered here. A) after B) while C) as D) since