as…as…這個詞組在考試上出現(xiàn)的頻率很高，下面小編給大家總結(jié)了as…as…的用法，希望大家能好好掌握。

　　一、“as(否定句中可用so)+adj./adv.+as…”，其基本意思為“……和……一樣”。但在實際應(yīng)用中，此結(jié)構(gòu)在不同的語境中含義差異較大。

　　1、表示不同人或物同一性質(zhì)的比較，意為“……和……一樣……"。

【資料圖】

　　The tree is as tall as the building(is).

　　這棵樹和那棟樓一樣高。

　　Michael is as bright as George(is).

　　邁克爾和喬治一樣聰明。

　　2、表示同一個人或物不同性質(zhì)的比較，意為“既……又……”

　　Alice works as happily as(she)plays(happily).

　　艾麗絲愉快地工作，盡情地玩。

　　Danny is not so wise as he is witty.

　　丹尼為人風(fēng)趣，但欠明智。

　　3、用于表示兩個人或物不同性質(zhì)的比較，表示程度相同或相當(dāng)，意為“……而……”。

　　He was as handsome as his wife was beautiful.

　　他長得非常英俊，他的妻子也長得非常漂亮。

　　He was as experienced as his brother was green.

　　他經(jīng)驗豐富，而他兄弟卻涉世未深。

　　二、as…as結(jié)構(gòu)的另一種形式是“as much/many+名詞+as+從句”。

　　Mary has written as many essays as her brother.

　　瑪麗寫的文章篇數(shù)和她弟弟一樣多。

　　It is as much your fault as your wife’s.

　　這既是你的過錯，也是你妻子的過錯。

　　Henry is as much a hypocrite as·John.

　　亨利跟約翰一樣是個偽君子。

　　三、若有修飾成分，如twice，three times，half，a quaer等，必須置于第一個as之前。

　　You are not half as clever as you think you are.你可不像自己想象的那么聰明。

　　She isn’t going out with a man who is twice as old as she.

　　她不打算和一個比她大一倍的人出去散步。

　　You’ve made just as many mistakes as I have.

　　我和你犯的錯誤一樣多。

　　We’ve produced twice as much cotton this year as we did lastyear.

　　我們今年的棉花產(chǎn)量是去年的兩倍。

　　四、as…as結(jié)構(gòu)的另一變體形式是“as+形容詞原級+名詞詞組+as”

　　I don"t want as expensive a car as this.=I don"t want a car as expensive as this.

　　我不要這么貴的汽車。

　　Tony is as clever a boy as his brother.

　　托尼是一個和他兄弟一樣聰明的男孩。

　　五、當(dāng)as…as與表示重量、數(shù)量、時間、距離、價格等的計量名詞連用時。往往并不表示比較。而是構(gòu)成一個形容詞組，意為“重達……，多達……，高達……”等。

　　The river is as deep aslO meters.

　　這條河深達10米。

　　Frosts often occur as late as May.

　　往往到5月份還有霜。

　　六、“as+原級+as any(或ever)”、“as+原級+as…can be”、“nothing(或no)+so+原級+as…”等結(jié)構(gòu)表達的是最高級意義。即在某種程度上或某方面達到極限或最大限度。

　　He is as great a mathematician as any.

　　他是一位非常杰出的數(shù)學(xué)家。

　　He is as happy as happy can be.

　　他幸福無比。

　　No one is so deaf as those who won’t listen.

　　最聾者莫過于不聽勸說的人。

　　七、as…as…不表示比較的幾個常見句型。

　　1.as…as possible/sb can盡可能的……

　　Please answer my question as soon as possible.

　　請盡快回答我的問題。

　　The detective is searching the man as carefully as he can.

　　那個偵探正在盡可能仔細(xì)地搜查那個男子的身體。

　　2.as…as usual/before像以前一樣……

　　She looks as pretty as before.

　　她看起來和以前一樣漂亮

　　Though they failed，they still worked as hard as usual.

　　盡管他們失敗了，但他們?nèi)韵褚郧耙粯优ぷ鳌?/p>

　　3.as long as只要，引導(dǎo)條件狀語從句

　　I will stay with you as long as there is a room flree.

　　要是你有一間空余的房子，我就住在你這里。

　　You may borrow this book as long as you promise to give itback.

　　只要你答應(yīng)歸還，你就可以把這書借走。