as which用法.doc

as which 用法中级语法 1. 引导限制性定语从句时,在 such, as, the same 后只能用 as, 其他情况用 which 。如: I never heard such stories as he tells. 我从未听过他讲那样的故事。 It’s the same story asI heard yesterday. 这故事跟我昨天听到的一样。 This is the photo which shows my house. 这张照片拍的是我的住宅。 2. 引导非限制性定语从句时,有时两者可互换。如: I live a long way from work, as [which] you know. 我住得离工作单位很远,这你是知道的。 3. 但在, 在以下情况引导非限制性定语从句时, 两者不可换用。如: ①当从句位于主句前面时,只用 as 。如: As is known to everybody, the moon travels round the earth once every month. 月球每月绕地球转一周,这是每个人都清楚的。② as 引导的非限制性定语从句应与主句在意义上和谐一致, which 无此限制: He went abroad, as [which] was expected. 他出国了,这是大家预料到的。 He went abroad, which was unexpected. 他出国了,这让大家感到很意外。( 不用 as) ③ as 引导非限制性定语从句时, 先行词通常不能是主句中某个具体的词,而应是整个句子、整个短语或某个短语推断出来的概念, 而 which 则无此限制。如: The river, which flows through London, is called the Thames. 这条流经伦敦的河叫泰晤士河。( 不用 as) ④当 as 引导非限制性定语从句作主语时,其谓语通常应是连系动词,而不宜是其他动词,而 which 则无此限制: She has married again, as [which] seemed natural. 她又结婚了,这似乎很自常。 She has married again, which delighted us. 她又结婚了, 这使我们很高兴。( 不(编辑:) 高级部分一、 as, which 指代整个句子或短语。由 as, which 引导的非限定性定语从句, 相当于 and this 或 and that 。在很多时候, 表示说话人对话语的看法或态度, 此时它们的先行词并不是具体的某个词,而是整个句子或短语: The Chinese government has decided to develop the west of China, which, I dare say, will benefit the people there, especially those who are still leading a poor life. 中国政府决定开发西部, 我敢说, 这将造福于西部的人民, 特别是那些至今过着贫穷生活的人。 She has married again , which delighted us .她又结婚了, 这使我们很高兴。