as. as用法初二英语

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as词性多,词义广,用法灵活,现将其用法归纳如下：I.as作副词,表示程度,意为“同样地”.“as…as…”,表示“和/与……一样”,是同级比较,其中第一个as是副词；否定句中常用“not so…as…”,表示“和/与……不一样”.如：Jack is as tall as his father.杰克和他的父亲一样高.He doesn‘t speak English so/ as fluently as you.他的英语说得不如你流利.II.as作介词.①如,像They got united as one man.他们团结得像一个人一样.She spoke of me as her dearest friend.她谈起我犹如我是她最亲密的朋友.②充当,作为As a writer,he was famous.作为作家,他是很有名的.English is spoken as the first language by most people in Australia.在澳大利亚,大多数人把英语作为第一语言.③当某人是（某身份）时As a child （=When he was a child）,he lived in the countryside.他小时候住在农村.III.as作连词,常用来引导状语从句 ①引导时间状语从句,表示“当……的时候”：“随着……”.如：He shouted loud as he ran along.他一边往前跑,一边高声地呼喊.We get wiser as we get older.随着年龄的增长,我们变得更聪明.②引导原因状语从句,表示“因为,由于”.如：As it was getting very late,we soon turned back.因为很晚了,我们很快就回来了.I must stop writing now,as I have rather a lot of work to do.我必须停笔了,因为我还有许多工作要做.③引导比较状语从句,表示“像……一样地”.如：They always work as hard as we do.他们工作总是像我们一样努力.（句中第二个as是连词,引导比较状语从句,也属于同级比较） IV.as作关系代词,引导定语从句,表示“正如……”.如：He was a foreigner,as I knew from his accent.他是个外国人,这一点我是从他的口音中听出来的.[相关链接] 含as的固定词组as soon as 一……就…… as…… as possible = as…… as one can 尽可能地…… as/ so long as 只要 as if/ though 好像,仿佛 as to 关于,至于 as much/ many as 多达……,达……之多 so/ as far as I know 就我所知,在句中作插入语 as a result,as a result of 结果；由于……的结果 as well 也,还