分享as...as的用法與例句

1、as.as的用法 as.as意為"和一樣"，表示同級(jí)的比較。使用時(shí)要注意第一個(gè)as為副詞，第二個(gè)as為連詞。其基本結(jié)構(gòu)為：as+ adj./ adv. +as。例如： (1)This film is as interesting as that one.這部電影和那部電影一樣有趣。 (2)Your pen writes as smoothly as mine.你的鋼筆書寫起來和我的一樣流暢。 其否定式為not as/so +adj./ adv. +as。例如： This dictionary is not as/so useful as you think.這本字典不如你想

2、象的那樣有用。 若有修飾成分，如twice, three times, half, a quarter等，則須置于第一個(gè)as之前。例如： Your bag is twice as expensive as mine.你的袋子比我的貴一倍。 幾個(gè)關(guān)于as.as的常見句型： (1)as.as possible Please answer my question as soon as possible.請盡快回答我的問題。 (2)as.as usual/before She looks as pretty as before.她看起來和以前一樣漂亮。 (3)as long as. (引導(dǎo)條件狀語從句

3、) It took us as long as three years to carry out the plan.我們花了長達(dá)三年的時(shí)間才完成這項(xiàng)計(jì)劃。 (4)as far as He walked as far as the railway station yesterday evening.昨天傍晚，他一直散步到火車站。 (5)as well as She cooks as well as her mother does.她燒菜燒得跟她母親一樣好。 一些帶有as.as結(jié)構(gòu)的常見短語歸納： as busy as a bee像蜜蜂一樣忙碌 as easy as ABC像ABC一樣容易 as

4、deep as a well像井一樣深 as light as a feather像羽毛一樣輕 as soft as butter像黃油一樣軟 as rich as a Jew像猶太人一樣富裕一、“as(否定句中可用so)adjadvas”，其基本意思為“和一樣”。但在實(shí)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"。 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(gè)人或物不

5、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(gè)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(yàn)豐富，而他兄弟卻涉世未深。 二、asas結(jié)構(gòu)的另一

6、種形式是“as muchmany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 wifes 這既是你的過錯(cuò)，也是你妻子的過錯(cuò)。 Henry is as much a hypocrite as·John 亨利跟約翰一樣是個(gè)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(gè)as之前。 You are not half as clever as you think you

7、 are你可不像自己想象的那么聰明。 She isnt going out with a man who is twice as old as she 她不打算和一個(gè)比她大一倍的人出去散步。 Youve made just as many mistakes as I have 我和你犯的錯(cuò)誤一樣多。 Weve 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、asas結(jié)構(gòu)的另一變體形式是“as形容詞原級(jí)名詞詞組as” I don't want as expensive a car

8、 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(gè)和他兄弟一樣聰明的男孩。 五、當(dāng)asas與表示重量、數(shù)量、時(shí)間、距離、價(jià)格等的計(jì)量名詞連用時(shí)。往往并不表示比較。而是構(gòu)成一個(gè)形容詞組，意為“重達(dá)，多達(dá)，高達(dá)”等。 The river is as deep aslO meters 這條河深達(dá)10米。 Frosts often occur as late as May 往往到5月份還有霜。 六、“as+原級(jí)+as any(或ever)

9、”、“as+原級(jí)+ascan be”、“nothing(或no)so原級(jí)as”等結(jié)構(gòu)表達(dá)的是最高級(jí)意義。即在某種程度上或某方面達(dá)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 wont listen 最聾者莫過于不聽勸說的人。 七、asas不表示比較的幾個(gè)常見句型。 1asas possiblesb can盡可能的 Please answer my question as soon

10、as possible 請盡快回答我的問題。 The detective is searching the man as carefully as he can 那個(gè)偵探正在盡可能仔細(xì)地搜查那個(gè)男子的身體。 2asas usualbefore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?3as long as只要，引導(dǎo)條件狀語從句 will stay with you as long as t

11、here 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。2. as用作連詞引導(dǎo)時(shí)間狀語從句as與when，while都是引導(dǎo)時(shí)間狀語從句的從屬連詞，含義都是"當(dāng)?shù)臅r(shí)候"。但它們有區(qū)別：用when時(shí)，從句的動(dòng)作可以與主句的動(dòng)作同時(shí)發(fā)生，也可以先于主句的動(dòng)作發(fā)生；用while時(shí)，從句的動(dòng)作為一過程，主句動(dòng)作與從句動(dòng)作同時(shí)進(jìn)行或在從句動(dòng)作過程中發(fā)生；用as時(shí)，主句和從句的動(dòng)作同時(shí)發(fā)生，具有延續(xù)

12、的含義。例如：(1)It was snowing when he arrived at the construction site.他到達(dá)工地時(shí)，天正在下雪。(2)He was watching TV while his mother was cooking.他母親做飯時(shí)他在看電視。(3) You will grow wiser as you grow older.你會(huì)隨著年齡的增長而越來越聰明。3. as用作連詞引導(dǎo)原因狀語從句as，because，since都可以表示因果關(guān)系，連接原因狀語從句，含義是"因?yàn)?，由?quot;，但它們有區(qū)別：because表示的語氣最強(qiáng)；as一般放

13、在句首，語氣較弱，較口語化；since常常用在書面語中，表示多為對方已知的、或稍加分析便可得知的原因，有時(shí)可譯作"既然"。例如：(1) He will succeed because he is in earnest.他一定會(huì)成功，因?yàn)樗苷J(rèn)真。(2) Since you are so sure of it he”ll believe you.既然你對此如此有把握，他會(huì)相信你的。(3) As rain has fallen, the air is cooler.因?yàn)橄逻^雨，空氣比較清爽。4. as作連詞引導(dǎo)讓步狀語從句as與although (或though)，howeve

14、r (或no matter how)等都可以引導(dǎo)讓步狀語從句，含義是"雖然，盡管"，但它們有區(qū)別：although語氣稍正式些，可放在句首，也可放在句中，主句中不能再用but，但可以用yet；as所表示的語氣較強(qiáng)，引導(dǎo)的讓步狀語從句用倒裝語序；however引導(dǎo)讓步狀語從句時(shí)，它的后面可跟形容詞或副詞，也要用倒裝語序。例如：(1) Although he is quite old, he still jogs every day.他雖然年紀(jì)相當(dāng)大，仍然每天慢跑。(2) Strange as it may seem, nobody was injured in the acc

15、ident.這次意外雖然顯得令人不可思議，卻沒有人受傷。(3) However hard he may try, he will not attain his goal.無論他怎樣努力也達(dá)不到目標(biāo)。二、as作關(guān)系代詞的用法關(guān)系代詞as引導(dǎo)定語從句時(shí)，既可以單獨(dú)使用，也可以與其他詞連用，其用法要比that和which更為復(fù)雜。1. as引導(dǎo)定語從句與其他詞連用用于the same.as結(jié)構(gòu)中This is the same book as I read last week.這本書和我上周讀的那本是一樣的。用于such.as結(jié)構(gòu)中I don”t like such books as he reco

16、mmends.我不喜歡他推薦的那些書。用于"so +adj. + a/an + n. (單數(shù)) + as "結(jié)構(gòu)中I am not so strong a man as I was.我已經(jīng)沒有從前那么強(qiáng)壯了。2. as單獨(dú)引導(dǎo)定語從句as單獨(dú)引導(dǎo)定語從句時(shí)，先行詞可以是一個(gè)詞，也可以是一個(gè)句子或短語。例如：(1) She is late, as is often the case.她遲到了，這是經(jīng)常的事。(先行詞是整個(gè)主句)(2) To shut your eyes to facts, as many of you do, is foolish.對事實(shí)視而不見-你們好多人都是如此的愚蠢。(先行詞是