soasto的用法与inorderto的用法

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1、as...as的用法　　as...as意为"和……一样",表示同级的比较.使用时要注意第一个as为副词,第二个as为连词.其基本结构为：as+ adj./ adv.+as.例如：　　(1)This film is as interesting as that one.这部电影和那部电影一样有趣.　　(2)Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅.　　其否定式为not as/so +adj./ adv.+as.例如：　　This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用.　　若有修饰成分,如twice,three times,half,a quarter等,则须置于第一个as之前.例如：　　Your bag is twice as expensive as mine.你的袋子比我的贵一倍.　　带as(so)… as的结构　　1.在表示“和…一样…”时,可用“as...as”结构(前面的as后要用原形)：　　He is as busy as before.他还是和以前一样忙.　　I’ll give you as much help as I can.我将尽量帮助你.　　The airport was as crowded as ever.机场还是像平常那样拥挤.　　You’re as good a singer as Johny Buck.你的歌唱得像约尼∙伯克一样好.　　Modern computers can be as small as a book.现在的电脑可以像一本书那样大.　　2.在表示“不像…那样…”时可用“not as(so)...as”这种结构：　　It isn’t so cold as yesterday.今天不像昨天那样冷.　　He is not so handsome as his brother.他不像他哥哥那样英俊.　　I’m not so experienced as you think.我没有你想的那样有经验.　　The situation is not so bad as had been painted.形势没有描绘的那样糟糕.　　Jack is not as(so) old as he looks.杰克不像他看起来那样老.　　3.这种结构中也可包含一个状语或有almost,just,nearly,quite这类副词形容：　　The whale was twice as long as her boat.那头鲸有她的那艘船的两倍长.　　Their house is about three times as big as ours.他们的房子约为我们房子三倍大.　　My command of English is not half so good as yours.我的英语掌握得还不及你的一半好.　　He was almost as diligent as his sister.他几乎和她姐姐一样勤奋.　　She is nearly as tall as her mother.她几乎和她妈妈一样高.　　4.as...as还可用在许多固定说法中：　　as brave as a lion　　as busy as a bee　　as vain as a peacock　　soft as velvet　　as bright as day　　as fat as a pig　　as gentle as a lamb　　easy as ABC　　几个关于as...as的常见句型：　　(1)as...as possible　　Please answer my question as soon as possible.请尽快回答我的问题.　　(2)as...as usual/before　　She looks as pretty as before.她看起来和以前一样漂亮.　　(3)as long as...(引导条件状语从句)　　It took us as long as three years to carry out the plan.我们花了长达三年的时间才完成这项计划.　　(4)as far as　　He walked as far as the railway station yesterday evening.昨天傍晚,他一直散步到火车站.　　(5)as well as　　She cooks as well as her mother does.她烧菜烧得跟她母亲一样好.　　一些带有as...as结构的常见短语归纳：　　as busy as a bee像蜜蜂一样忙碌　　as easy as ABC像ABC一样容易　　as deep as a well像井一样深　　as light as a feather像羽毛一样轻　　as soft as butter像黄油一样软　　as rich as a Jew像犹太人一样富裕。

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