as（四级考试频度很大的几个用法）

1.引导让步状语从句（通常可以用though替换），使用下面句型：1）"形容词／副词十as＋主语十谓语：Young as I am，I know some of the family secrets．尽管我还很小，但我了解一些家庭秘密。Much as like her，I will not marry her．虽然我很喜欢她，但我并不想与她结婚。Some members of the staff couldn't handle the case，hard as they tried．一些职员不管怎么想办法也解决不了这个问题。2）"原形动词十as十主语十may／might／will／would"：Try as he would，he could not lift the rock．不管他用多大劲也举不起那块石头。There was not a soul to be found in the house，search as they would．不管他们怎么寻找，房子里也找不到一个人。

2.作关系代词，使用下面句型：1）"such…as"（as在此接近于

who/that/which）：Such women as Tom knew thought he was charming.汤姆认识的那些妇女都认为他长得很迷人。I never heard such stories as he tells.我从未听说过他讲的那些故事。He never hesitates to make such criticisms as are considered helpful to others．只要对别人有帮助，他从不犹豫提出这类批评。It wasn't such a good dinner she had promised us． a．that b．which c．as d．what（答案c．CET－4'90／1．译文：它并不是像她承诺我们的那样

一顿美餐。）2）用在"the same…as"句型中：He doesn't believe the same things as you do．他不相信你相信的那些东西。（注：as的这一用法在OALD词典中

被当作连词，但在张道真教授编的《现代英语用法词典》（重排本）P70中被当作关系代词，似乎后者更合理、更好理解些。）

3．用在"as＋be动词十表语"从句中，表不"正如"：He is absent，as is often the case．他正如通常那样又缺席了。Freddie，as might be expected，was attending the conference．正如可能预料的那样，弗雷迪当时正在出席会议。As was expected，he performed the task with success．正如预料的那样，他成功地完成了任务。 ______ is known to the world，Mark Twain is a great American writer. a．That b．Which c．As d．It（答案 c．CET－4'93／6．译文：正如世人所知，马克·吐温是一位伟大的美国作家。 _____ is generally accepted，economical growth is determined by the smooth development of production．a．What b．That c．It d．As（答案d．考研'95．译文：正如所公认的那样，经济增长是由生产的平 稳发展所决定的。）（注：as在这一句型中是连词还是关系代词也存在着争议，它在结构上更接近关系代词，但as与that／which不同，that／which引导的关系从句只能放在先行词后面，而as引导的从句不但可以放在主句的后面，还可以放在主句的前面。）

4．as用于省略句，为避免重复，as代替表语或宾语部分：David is tall，as are my brothers．像我的几个弟兄们一样，戴维也是个高个儿。（as are my brothers用的是倒装语序，正常语序应是 as my brothers are。）The Second World War，as did the earlier one of 1914，prompted public concern about a physical and Intellectual well－being of the country's human

resources．第二次世界大战，正如早些时候1914年的那次一样，立即引起了公众对这个国家人力资源的身心健康的关注。

5．as用于省略句，引起分词短语作状语：As expected，the afforestation movement rapidly spread．正如预料的那样，植树造林运动迅速扩展开来。It