Eyvdscw英語四級(jí)語法總結(jié)

1、七夕，古今詩人慣詠星月與悲情。吾生雖晚，世態(tài)炎涼卻已看透矣。情也成空，且作“揮手袖底風(fēng)”罷。是夜，窗外風(fēng)雨如晦，吾獨(dú)坐陋室，聽一曲塵緣，合成詩韻一首，覺放諸古今，亦獨(dú)有風(fēng)韻也。乃書于紙上。畢而臥。凄然入夢。乙酉年七月初七。-嘯之記。 四級(jí)語法講義一：時(shí)態(tài)：所謂的"時(shí)態(tài)"，就是時(shí)間+狀態(tài)。謂語動(dòng)詞的時(shí)態(tài)見下表：1主動(dòng)形式過去現(xiàn)在將來過去將來一般diddowill/shall doshould/would do進(jìn)行was/were doingam/is/are doingwill/shall be doing/完成had donehave/has donewill/shall

2、have doneshould/would have done用于虛擬語氣完成進(jìn)行had been doinghave/has been doing/2被動(dòng)形式過去現(xiàn)在將來過去將來一般was/were givenam/is/are givenwill/shall be givenshould/would be given進(jìn)行was/were being givenam/is/are being given/完成had been givenhave/has been givenwill/shall have been givenshould/would have been given完成進(jìn)行/v

3、 CET-4 ?？嫉娜N時(shí)態(tài)：過去完成時(shí)；將來完成時(shí)；（現(xiàn)在/過去）完成進(jìn)行時(shí)。v 時(shí)間狀語從句當(dāng)中的時(shí)態(tài)：一般過去時(shí) 所有的過去用一般現(xiàn)在時(shí)表示 現(xiàn)在和將來現(xiàn)在完成時(shí) 現(xiàn)在完成和將來完成一非謂語動(dòng)詞一不定式：一）不定式的?？夹问剑?) 一般形式：He decided to work harder in order to catch up with the others.被動(dòng)形式: He preferred to be assigned some heavier work to do. 語法功能： 表示與謂語動(dòng)詞同步發(fā)生2) 完成形式：He pretended not to have seen

4、 me.被動(dòng)形式：The book is said to have been translated into many languages. 語法功能：表示發(fā)生在謂語動(dòng)詞之前 二）不定式?？嫉目键c(diǎn)：1）不定式做定語-將要發(fā)生2）不定式做狀語-目的3）不定式充當(dāng)名詞功能-To see is to believe. 三)不定式的省略 1)感官動(dòng)詞 see, watch, observe, notice, look at, hear, listen to, smell, taste, feel+ do 表示動(dòng)作的完整性，真實(shí)性；+ doing 表示動(dòng)作的連續(xù)性，進(jìn)行性I saw him work i

5、n the garden yesterday.昨天我看見他在花園里干活了。(強(qiáng)調(diào)"我看見了"這個(gè)事實(shí))I saw him working in the garden yesterday.昨天我見他正在花園里干活。（強(qiáng)調(diào)"我見他正干活"這個(gè)動(dòng)作）v 感官動(dòng)詞后面接形容詞而不是副詞：The cake tastes good; It feels comfortable. 2) 使役動(dòng)詞 have bid make let 等詞后不定式要省略但同1)一樣被動(dòng)以后要還原to I d like to have John do it. I have my packag

6、e weighed.Paul doesnt have to be made to learn. 3) help help sb do help sb to do help do help to do四)有些動(dòng)詞后只跟不定式如：want，wish，hope，manage，promise，refuse，pretend，plan， offer，decide，agree，expect allow sb to do, cause sb to do , permit sb to do, enable sb to do force sb to do. be more likely to do love to

7、 do warn sb to do be able to do be ambitious to do. begin to do . start to do 五) 有的時(shí)候to后面要接-ing形式accustom (oneself) to; be accustomed to; face up to; in addition to; look forward to; object to; be reduced to; resign oneself to; be resigned to; resort to; sink to; be used to; be alternative to; be cl

8、ose/closeness to; be dedication/dedicated to; be opposition/opposed to; be similarity/similar to.三、need/want 后的-ing形式具有被動(dòng)的意思。其中，want不太常用。He needs (a lot of) encouraging. 二. 動(dòng)名詞： 具有動(dòng)作性特征的名詞1)是名詞 seeing is believing2)具有動(dòng)詞性特征可以帶賓語 starving troops is necessary.一)動(dòng)名詞的形式:一般形式：I don't like you smoking.

9、 完成形式：I regret not having taken your advice.被動(dòng)形式：This question is far from being settled.二) 動(dòng)名詞?？嫉狞c(diǎn)1)動(dòng)名詞做主語謂語動(dòng)詞為單數(shù)2)在動(dòng)名詞和不定式中,做為介詞的賓語是動(dòng)名詞3)動(dòng)名詞的否定直接在其前加否定詞,通過代詞的賓格或所有格形式給出邏輯主語.I would appreciate_ back this afternoon Ayou to call Byou call Cyou calling Dyou're calling（Key：C your calling 也對(duì)）I regre

10、t not having taken your advice.4)有些詞后只能接動(dòng)名詞admit; appreciate; avoid; celebrate; consider; contemplate; defer; delay; deny; detest; discontinue; dislike; dispute; enjoy; it entails; escape; excuse; explain; fancy; feel like; finish; forgive; can't help; hinder; imagine; it involves; keep; it mean

11、s; mention; mind; miss; it necessitates; pardon; postpone; practice; prevent; recall; report; resent; resist; risk; suggest; understand. 另外還有一些接-ing形式的常用說法：it's no good; it's no/little/hardly any/ use; it's not/hardly/scarcely use; it's worthwhile; spend money/time; there's no; t

12、here's no point in; there's nothing worse than; what's the use/point.5有些詞后加不定式和動(dòng)名詞均可remember, forget, try, stop, go on, cease, mean后面用不定式和-ing形式，意義截然不容。I remembered to post the letters. (指未來/過去未來的動(dòng)作)I remembered posting/having posting the letters (我記得這個(gè)動(dòng)作)forgot與remember的用法類似。I regret to

13、 inform you that 我很遺憾地通知你I regretted having left the firm after twenty years. 為了"二十年前的離開"而遺憾。try to 努力 You really must try to overcome your shyness.try ing 試驗(yàn) Try practicing five hours a day. I mean to go, but my father would not allow me to. 打算、想我想去，但我父親不讓我去。To raise wage means increasing

14、 purchasing power. 意味著贈(zèng)加工資意味著增加購買力。prefer的用法：我寧愿在這里等。I prefer to wait here. （所以啊，你不介意的話，我就等下去。）I prefer waiting here.（我正在這里等，我就喜歡這么做。）I prefer swimming to cycling. （這個(gè)句子里面就不能用不定式了。）3 分詞：現(xiàn)在分詞主動(dòng)進(jìn)行,過去分詞被動(dòng)狀態(tài)現(xiàn)在分詞的形式:1)一般式: Do you see the man talking to the dean（主任）? (與謂語動(dòng)詞同步發(fā)生)2)完成形式：Not having made adeq

15、uate preparations, they failed. (發(fā)生謂語動(dòng)詞之前)3)完成被動(dòng)形式：Having been adapted, the script seems perfect.( 發(fā)生謂語動(dòng)詞之前且表示被動(dòng))過去分詞1) 過去分詞表示被動(dòng)：Fight no battle unprepared.2)過去分詞的進(jìn)行形式：You'll find the topic being discussed everywhere. (強(qiáng)調(diào)正在被做)這三種非謂語動(dòng)詞，都可以構(gòu)成復(fù)合結(jié)構(gòu)，非謂語動(dòng)詞所修飾的成分是這些非謂語動(dòng)詞的邏輯主語。他們之間的一致關(guān)系主動(dòng)還是被動(dòng)，往往就是考點(diǎn)。獨(dú)立主

16、格結(jié)構(gòu)中，要注意的是分詞與他前面的邏輯主語之間的主動(dòng)被動(dòng)的關(guān)系。二：虛擬三：虛擬語氣情態(tài)動(dòng)詞所表達(dá)的可能性程度：must/can't à should/shouldn't à might/may (not)另外兩個(gè)"類情態(tài)詞的形式："need/needn't; have to/don't have tov 最自然的虛擬狀態(tài)：由should/would+原型時(shí)態(tài)（不含時(shí)間只含狀態(tài)）本質(zhì)上是過去將來時(shí)：即，時(shí)間固定在過去將來，狀態(tài)不同：一般、進(jìn)行、完成、完成進(jìn)行。這時(shí)"虛擬語氣"的產(chǎn)生往往是因?yàn)槲覀円磉_(dá)&

17、quot;本來應(yīng)該"（而現(xiàn)在卻還沒有）（本來可以，本來能）I should go!( but I'm still here!)(一般)I should be working now!(進(jìn)行)I should have practiced more (than I did)!(完成)我應(yīng)該多多練習(xí)！（言下之意，現(xiàn)在我練習(xí)得不多。）I shouldn't dream away my time too much! (完成的否定)(actually I did dream away my time too much!)It shouldn't have been le

18、aking for such a long time!(完成進(jìn)行)I may/might/could have finished!(完成)一些常見的句型中，就會(huì)出現(xiàn)這種虛擬語氣，而處于從句之中，should 常常被省略掉o suggest, advise, propose, recommend, plan;o demand, order, direct, arrange, command, decide;o require, request;o think, expect, believe, insist, suspect.由于他們的含義中包含"建議，假設(shè)，應(yīng)該"這類的含義

19、，所以，由他們引起的從句中，就會(huì)包含有should+原型時(shí)態(tài)構(gòu)成的虛擬語氣。這些動(dòng)詞（以及他們的名次形式，分詞形式）引起的從句還有其他的變形：主語從句，表語從句，同位語從句It's suggested thatMy suggestion is thatThe only suggestion that.The only suggestion I can give you now is that 一些形容詞引起的表語從句中，也會(huì)有同樣的情況important; necessary; essentialIt'snatural; strange; incrediblethata pit

20、y; a shame; no wonderØ 由lest, for fear that, in case 引起的從句中多使用shouldv 表達(dá)與事實(shí)相反1. 與現(xiàn)在相反：使用過去時(shí)：I wish I were not here!(一般現(xiàn)在à一般過去)Suppose we were not here.He loved me as if I were his own son.(一般現(xiàn)在à一般過去)Hope I weren't always losing things!(現(xiàn)在進(jìn)行à過去進(jìn)行)If only/If I hadn't been t

21、here!(現(xiàn)在完成à過去完成)What if I hadn't been waiting right here!(現(xiàn)在完成進(jìn)行à過去完成進(jìn)行)?？季湫停篒t's (high) time (that); would rather (that) 這兩個(gè)從句，只能表達(dá)對(duì)現(xiàn)在的看法，所以，從句中只有一般過去時(shí)。2. 與過去相反：過去完成時(shí)； How nice it is if I had past the test! How nice it is if I had slept a little more this morning!3. 與將來相反？將來的事情沒有發(fā)

22、生，所以只能推測。 If it rains tomorrow, we'll have to stay one day more. 不過，由于可以用be to表示將來；所以，虛擬語氣中經(jīng)常出現(xiàn)were to；也是CET-4的?？颊Z法點(diǎn)。v 虛擬條件句o if 部分，做一個(gè)與事實(shí)相反的假設(shè)（所以只有一般過去和過去完成）；o 主句部分，這是表示基于這個(gè)假設(shè)的推測，一般使用情態(tài)動(dòng)詞would，少數(shù)情況下使用could/might/may。o 注意：兩個(gè)部分之間，是有邏輯關(guān)系，而在兩部分的謂語動(dòng)詞時(shí)態(tài)上，沒有必然的聯(lián)系。v 注意，虛擬條件句中的if可以省略，造成were/had提前，產(chǎn)生倒裝。v

23、 隱含的非真實(shí)條件What would you do with 50 thousand dollar?How could I be happy without you?除了條件狀語從句之外，原因狀語從句也會(huì)出現(xiàn)虛擬語氣。o 由in order that, so that引起的從句，肯定的時(shí)候可以使用may/might; can/could; 否定的時(shí)候，多用shouldn't;o whoever, whatever, no matter what引起的從句中，多用may+情態(tài)動(dòng)詞的基本用法及其區(qū)別 最近幾年高考試題中常常借助語境來考查情態(tài)動(dòng)詞的基本用法及其區(qū)別，因此在平時(shí)學(xué)習(xí)時(shí)準(zhǔn)確理解

24、和掌握情態(tài)動(dòng)詞的基本用法十分重要。情態(tài)動(dòng)詞的用法復(fù)雜多變，在高考試題中，命題者常常利用語境和句子之間意義上的細(xì)微差別來考查學(xué)生對(duì)情態(tài)動(dòng)詞的理解和掌握。對(duì)于情態(tài)動(dòng)詞，除了要求考生能夠準(zhǔn)確掌握它們的基本用法外，還要充分利用高考試題所設(shè)置的語境來分析句子之間所體現(xiàn)的特殊關(guān)系。下面就近幾年來高考試題中出現(xiàn)的情態(tài)動(dòng)詞的考點(diǎn)進(jìn)行歸納分析，以便同學(xué)們復(fù)習(xí)掌握。 一、用“情態(tài)動(dòng)詞have done”結(jié)構(gòu)表示對(duì)過去動(dòng)作的推測，高考試題中常用過去時(shí)態(tài)或過去的時(shí)間狀語給以暗示。情態(tài)動(dòng)詞的這一用法可以用 “對(duì)立統(tǒng)一”來概括。 1當(dāng)試題的前句和后句在動(dòng)作和意義上相互補(bǔ)充說明，且整個(gè)句意在動(dòng)作和時(shí)間上是一個(gè)整體時(shí)，我們可

25、用“統(tǒng)一”關(guān)系來解決這樣的試題。常見的結(jié)構(gòu)有： must have done： 表示對(duì)過去動(dòng)作的肯定推測，常譯作“一定做了”，只能用于肯定句中。其否定形式為cantcouldnt have done 疑問式為CanCould.have done。 could might have done：表示對(duì)過去發(fā)生的動(dòng)作的可能性推測，常譯作“可能做了”。如： 1) My sister met him at the Grand Theater yesterday afternoon, so he your lecture A couldnt have attended B neednt have atte

26、nded C mustnt have attended D shouldnt have attended 本題選A。 2) Jack yet, otherwise he would have telephoned me A mustnt have arrived B shouldnt have arrived C cant have arrived D need not have arrived （C） 2當(dāng)試題的前后句在動(dòng)作和意義上構(gòu)成轉(zhuǎn)折關(guān)系時(shí)，常借助“but, however, instead”等詞來表示過去的動(dòng)作與客觀事實(shí)不符，這時(shí)我們就可以用“對(duì)立”關(guān)系來解決這樣的試題。這種結(jié)構(gòu)常見

27、的有： should have done ought to have done：表示過去本應(yīng)該做某事而實(shí)際上沒有做。 should not have done ought not to have done：表示過去本不應(yīng)該做某事但事實(shí)上卻做了。 need have done：表示過去本來有必要去做某事，但事實(shí)上沒有做。 need not have done：表示過去本來沒有必要做某事，但事實(shí)上卻做了。如：3) I was really anxious about you You home without a word (NMET2001) A mustnt leave B shouldnt h

28、ave left C couldnt have left D neednt leave“本不應(yīng)該離家出走卻走了”，故本題選B。 4) I told Sally how to get here, but perhaps I for her (NMET94)A had to write it out B must have written it outC should have written it out D ought to write it out由句中的連詞but可知前后句之間是對(duì)立關(guān)系，分析題意可知本題應(yīng)選C。二、考查情態(tài)動(dòng)詞基本用法之間的比較和辨析。最近幾年高考試題中常借助具體的語境來

29、考查考生對(duì)那些最常見的情態(tài)動(dòng)詞的基本用法的理解和掌握，因此在做這樣的試題時(shí)應(yīng)認(rèn)真分析語境中所含的實(shí)際意義，并結(jié)合情態(tài)動(dòng)詞的基本含義和用法做出正確的選擇。5) Is John coming by train He should, but he not He likes driving his car A must B can C need D may mustnt 表示“禁止、不準(zhǔn)”；cannot 表示“不可能”；need not 表示“不必要”；may not 表示“可能不”。分析語境可知本題應(yīng)選D。 6) I hear youve got a set of valuable Australi

30、an coins I have a look Yes, certainly A Do B May C Shall D Should 分析語境可知這是在征求對(duì)方的許可，may表示“允許、可以”，語氣比較委婉 shall常用于第一、三人稱作主語的疑問句中,表示征求對(duì)方意見和指示，如果此空用shall，則意為“要（我）看一下嗎？”，不符合上下文意思。故本題選B。 7) Mr Bush is on time for everything How it be that he was late for the opening ceremony A can B should C may D must mus

31、t be 表示肯定的猜測，只能用于肯定句中，由題意可知本題應(yīng)選A。 8) Are you coming to Jeffs party Im not sure I go to the concert instead A must B would C should D might 由題意和下句中的 “Im not sure” 可知這段對(duì)話中存在一種可能性推測，might可以用來表示一種比較委婉的可能性判斷，故本題選D。又如： I should have been there, but I not find the time A would B could C might D should 分析題意

32、可知第二個(gè)分句表示過去的某種能力；C 項(xiàng)只表示語氣上的可能性，與題意不符。故本題選B。 9) Johnny, you play with the knife, you hurt yourself A wont; cant B mustnt; may C shouldnt; must D cant; shouldnt mustnt 表示“不可以；禁止”，分析題意可知第二個(gè)空表示某種可能性，故本題選B。 10) Will you stay for lunch Sorry, My brother is coming to see me A I mustnt B I cant C I neednt D

33、 I wont 分析題意可知因?yàn)椤拔业艿芤獊砜次摇?，所以“不能留下”，因此?duì)別人的邀請(qǐng)或要求應(yīng)給予禮貌的拒絕。A 項(xiàng)表示“禁止”；C項(xiàng)表示“不必要”；而D項(xiàng)表示“不會(huì)”，均不符合題意。故本題選B。又如： Could I borrow your dictionary Yes, of course you A might B will C can D should (C)11)When can I come for the photos I need them tomorrow afternoon They be ready by 1200 A can B should C might D nee

34、d 該題考查情態(tài)動(dòng)詞should的基本含義，分析句意可知本題應(yīng)選B。又如： 12) The fire spread through the hotel very quickly but everyone get out( A had to B would C could D was able to 該題考查了could和be able to的區(qū)別，二者都可表示過去時(shí)間的能力，但如果表示過去成功地做了某事只能使用was were able to do，故本題選D。13) Shall I tell John about it No, you Ive told him already A needn

35、t B wouldnt C mustnt D shouldnt 情態(tài)動(dòng)詞shall在試題中表示征詢對(duì)方意見或請(qǐng)求指示。答句暗示 “沒有必要了”，故本題選A三、一致關(guān)系一)主謂一致1 主謂一致（與插入語無關(guān)）  1主謂的分隔原則：主謂之間可以用定語從句或者省略的定語從句分隔。  2定語從句中的主謂一致： 3隨前一致：  n. + together withn2  as well as  including  along with  with /&#

36、160;of  accompanied with / by  4就近原則：n1 or n2 +v（就近原則）  either n1 or n2  5可數(shù)n1 and 可數(shù)n2+v(pl)  不可數(shù)n1 and 不可數(shù)n2+v(pl)  例外：war and peace iswar and peace是一個(gè)整體  但是如果主語表示的是同一個(gè)概念，同一

37、人，同一事的時(shí)候，謂語動(dòng)詞用單數(shù)，這種結(jié)構(gòu)的特征是and連接的兩個(gè)詞只有一個(gè)冠詞。The iron and steel industry is very important to our country.The head master and mathematical teacher is coming.The head master and the mathematical teacher are coming.類似的還有：law and orderbread and  butterblack and white  To&

38、#160;love and to be loved is   A lawyer and a teacher are  A lawyer and teacher is   6隨后原則：not A but B / not only A but also B+v.(與B一致)  7百分比結(jié)構(gòu)：most&#

39、160;, half , rest , some , majority , one+persent  of+n1+v.（由n1決定）8倒裝結(jié)構(gòu)的主謂一致：  a）There be +n由名詞決定動(dòng)詞  b）Among , between等介詞位于句首引起倒裝結(jié)構(gòu)：  Among / Between +系動(dòng)詞+n. （由名詞決定動(dòng)詞）  9The+adj的主謂一致： 

40、a）當(dāng)表示“一類人”，  b）當(dāng)表示某一抽象概念時(shí)The good is always attractive.  10 To do/doing/主從+vs *More than one+n many a +n. a day or two   二)、倒裝1 全部倒裝是只將句子中的謂語動(dòng)詞全部置于主語之前。此結(jié)構(gòu)通常只用與一般現(xiàn)在時(shí)和一般過去時(shí)。常見的結(jié)構(gòu)有：Up went the plane = the plane went up.1)

41、here, there, now, then, thus等副詞置于句首, 謂語動(dòng)詞常用be, come, go, lie, run。2) 表示運(yùn)動(dòng)方向的副詞(back, down, off, up)或地點(diǎn)狀語置于句首，謂語表示運(yùn)動(dòng)的動(dòng)詞。注意：1) 上述全部倒裝的句型結(jié)構(gòu)的主語必須是名詞，如果主語是人稱代詞則不能倒裝。Here he comes.Away they went. 2) 謂語動(dòng)詞是be的時(shí)候，不能倒裝。 Here it is.Here you are.3） 形容詞短語/分詞短語位于句首，引起倒裝  *typical of characteri

42、stic of  *coinciding with + n  4） 表示地點(diǎn)范圍的介詞短語位于句首，謂語動(dòng)詞為系動(dòng)詞，一定引起倒裝  In（表語）+系動(dòng)詞+主，主同。*在倒裝句型答案中不能出現(xiàn)there  *?？冀樵~要倒裝：amongbetweeninatbeneath  ?？嫉南祫?dòng)詞：belieexistremainrest  部分倒裝1 否定 adv 位于句首，引起倒裝：not only, not until, hardly,

43、60;scarcely,  seldom, rarely, no soonerthan  1） not until + 時(shí)間 + 主謂倒裝，not until + 句子+主謂倒裝  2） only+狀語位于句首  only +ad. eg: recently  prep.短短語 eg: in recently years  從句 

44、;eg: when clause  only一個(gè)詞本身不倒裝  3） 在比較級(jí)結(jié)構(gòu)中，than后面可以倒裝，也可以不倒裝。 部分倒裝是指將謂語的一部分如助動(dòng)詞或情態(tài)倒裝至主語之前。如果句中的謂語沒有助動(dòng)詞或情態(tài)動(dòng)詞，則需添加助動(dòng)詞do, does或did，并將其置于主語之前。Ø 1) Neither, nor, so 表示前面句子的共同否定或者肯定，產(chǎn)生倒裝，一般主動(dòng)詞提前，謂語動(dòng)詞的其他部分就4) as / though引導(dǎo)的讓步從句必須將表語或狀語提前 （形容詞, 副詞, 分詞, 實(shí)義動(dòng)詞提前）。as讓步雖然，盡管詞序倒

45、裝。語氣比 though 強(qiáng)。 Successful as he is, he is not proud. 他雖成功，卻不驕傲。Women as she is, she's every brave.Try hard as he will, he never seems able to do the work satisfactorily.注意：A) 句首名詞不能帶任何冠詞。B) 句首是實(shí)義動(dòng)詞, 其他助動(dòng)詞放在主語后。如果實(shí)義動(dòng)詞有賓語和狀語, 隨實(shí)義動(dòng)詞一起放在主語之前。5) 其他部分倒裝 a) so that 句型中的so; such that句型中的such位于句首時(shí)，需倒裝。S

46、o frightened was he that he did not dare to move an inch.b) 在某些表示祝愿的句型中：May you all be happy.c) 在虛擬語氣條件句中從句謂語動(dòng)詞有were, had, should等詞，可將if 省略，把 were, had, should 移到主語之前，采取部分倒裝。Were I you, I would try it again.四、復(fù)合句從句可分為：Ø 名詞性從句à 主語從句、賓語從句、表語從句、同位語從句Ø 形容詞性從句à定語從句Ø 副詞性從句à狀語

47、從句v ?？嫉年P(guān)系代詞：that; which; who/whom/whose; where; when; what; as。v 常見的同位語從句現(xiàn)行詞（that之前的抽象名詞）：fact, idea, news, hope, conclusion, evidence, opinion, problem, thought, understanding v 常用的引導(dǎo)詞o 時(shí)間狀語從句：while; when; before; whenever; as; after; till; until; since; once; ever since; as/so long as; as soon as;

48、 no sooner than; hardly when; scarcely/barely when; the moment/minute/instant; on (the point of) doingo 地點(diǎn)狀語從句：where; wherevero 原因狀語從句：because; since; as; seeing that; considering that; now that; in that; for fear that; lest; owing to the fact that; because of the fact that; due to the fact thato 方式狀語從句：as; as if; as though; how; save thato 比較狀語從句：as; than; as as; not so as; h