【正文】 結(jié)構(gòu)中位于句首，這時as從句帶有比喻的含義，意思是“正如?”，“就像”，多用于正式文體，例如：Always do to the others as you would be done ，你就要怎樣待人。）It looks as if the weather may pick up very 。Why did you go?I went because Tom told me to ？那是因為湯姆叫我去。t go, because I was /As the weather is so bad, we have to delay our ）由because引導的從句如果放在句末，且前面有逗 號，則可以用for來代替。結(jié)果狀語從句結(jié)果狀語從句常由so? that 或 such?that引導，掌握這兩個句型，首先要了解so 和 such與其后的詞的搭配規(guī)律。t go to school條件狀語從句用法要點。非真實條件句已在虛擬語氣中闡述。Though the sore be healed, yet a scar may ，但傷疤留下了。3)ever if, even We39。例如：Be careful when you cross the 。例如： ● I was writing a letter when he came in.● She did not go to bet until she(had)finished her homework.● It is nearly six years since we began to learn English.● Once you begin, you must go on.● By the time I arrived at the station, the train had ，應(yīng)注意下面兩點： 1． 要用一般現(xiàn)在時替代一般將來時，例如： ● I’ll let him know when he ，例如： ●He said he would wait here until I came ：“直到你說明怎么辦之后，我才設(shè)法把這件事做好。屬于第一種情況，所以正確答案應(yīng)為A。這種從句通常用連詞although, though, as, however等；連接代詞whatever, whoever等；起連接作用的短語even if though, no matter how what who 等引導。例如：● If it rains tomorrow, we’ll stay at home.● He will not e unless he is invited.● Suppose he is absent, what shall we do?● As long as we don’t lose heart , we’ll find a way to overe the 可以引導一個條件狀語從句，所以正確答案應(yīng)為B。這種從句由such…that, so…that, so that等引導。引導這種從句的詞有after, before, as, when, while , till , until, since, once。三：主句與從句時態(tài)一致的問題。如果實義動詞有賓語和狀語，隨實義動詞一起放在主語之前。s raining, they are still working in the ，但他們?nèi)栽诘乩锔苫?。連接詞主要有 if, unless, as/so long as, on condition that 等。The boy is so young that he can39。I sent the letter by air mail in order that it might reach him in ，以便他能及時收到。當原因是顯而易見的或已為人們所知，就用as或 since。常用的引導連詞有because, as和since。）He looks as if(as though)he had been hit by 。Wherever I am I will be thinking of 。(2)It is not until? that?I will wait for my friend until / till he 。1)Until可用于句首，而till通常不用于句首。Wait till I call 。（7）.till和until引導的時間狀語從句，譯為“直到??為止”，not ? till / until引導的時間狀語從句，譯為“直到??才”。(go to bed 表示的動作不能持續(xù))（5）表示“一?就?”的結(jié)構(gòu)hardly/scarcely?when/before, no sooner?than 和as soon as都可以表示“一?就?”的意思，表示從句的動作一發(fā)生，主句的動作馬上就發(fā)生。注：常用句型：It is +時間段+since從句譯為：自從??有多長時間了。after 意為“在??之后”，引導時間狀語從句時，表示主句的動作發(fā)生在從句的動作之后。We were working in the chemistry lab, when the lights went ，突然燈都熄滅了。When you are crossing the street, you must be （們）過街道時，一定要小心。）He would rather have the small one than the large one.（他寧可要那個小的，而不愿要那個大的。t catch 常用 so that, in order(that), lest, for fear that 等連詞引導，如：I took a taxi so that I could be in time for the closer in order that you may see the blackboard that 既可引導結(jié)果從句也可引導目的從句，但結(jié)果從句表示事實，通常不含情態(tài)動詞；目的從句表示希望或想要實現(xiàn)的事實，通常含有情態(tài)動詞，如：He got up early so that he caught the train.（結(jié)果）He got up early so that he could(might)catch the train.（目的）Lest 和 for fear(that)含有否定意義，并且從句中動詞須用 “動詞原形”或 ”should + V.” 的虛擬語氣，如：He ran away lest he(should)be caught.(= He ran away in order that he would not be caught.)I checked all the results time and again for fear that there should be any mistakes.(= I checked all the results time and again so that there wouldn39。第 6頁共 6頁第三篇：狀語從句Clauses of Condition, Concession and Contrast(條件、讓步和對比從句)條件從句由 if, unless, as(so)long as, provided / providing(that), suppose / supposing(that), in case等引導，如：If he es I39。1．要根據(jù)前后句的邏輯關(guān)系判斷是哪一種狀語從句。Leave your key with a neighbor ________you lock yourself out one ．ever sinceB．even if C．soon afterD．in case in case引導目的狀語從句，意為“以防萬一”，符合題意。A四、地點、原因狀語從句 1．地點狀語從句地點狀語從句是表示主句謂語動詞的動作發(fā)生的地點的狀語從句，引導詞有where，wherever，anywhere，everywhere等。以上三項均不符合句意和語境。s too long a journey to make in one ，一天之內(nèi)到不了。2．a(chǎn)s引導讓步狀語從句要倒裝as引導讓步狀語從句時，狀語、表語及謂語動詞的一部分應(yīng)置于as之前。not(...)until引導時間狀語從句時，主句的謂語動詞必須是非延續(xù)性動詞，從句為肯定式，意為“直到……才……”。We were about to set off when it suddenly began to ，突然下起了雨。第 2頁共 6頁 嘉興英語教學網(wǎng) 收集整理 歡迎使用Some men are rich，while/whereas others are 。本句中前面的祈使句表示條件，后面的陳述句表示條件下的結(jié)果，故用 and 連接；or表示“否則”，與句意不符。若選 that 的話，April 29,2011前要加介詞on。答案：A 4．(2011年高考陜西卷)________ all of them are strong candidates, only one will be chosen for the ．SinceB．While C．IfD．As 解析：句意：盡管他們都是很有實力的求職者，但是只有一個人會被選中擔任這一職位。even if “即使”，引導讓步狀語從句； if only“如果??就好了”，引導虛擬條件句；so that 引導目的和結(jié)果狀語從句，均不符合句意。s never a good idea to exercise too close to ．IfB．As C．AlthoughD．Unless 解析：句意：雖然有規(guī)律的鍛煉很重要，但在臨睡覺前鍛煉卻從來不是個好主意。答案：B 5．(2011年高考福建卷)It was April 29,2011________Prince William and Kate Middleton walked into the palace hall of the wedding ．thatB．when C．sinceD．before 解析：句意：2011年4月29日，威廉王子與凱特并列連詞所連接的簡單句被稱為分句。Don39。The shops were closed so I didn39。D 6．while作為并列連詞，意為“而，卻”，表示對比。5．every time，each time，next time，the first time，any time等名詞短語引導時間狀語從句時，分別表示“每次……，每次……，下次……，第一次……，任何時候……”。t get much ．a(chǎn)sB．even though C．unlessD．a(chǎn)s long as 句意：盡管Tim鍛煉得不多，但他的身材保持得很好。(2011年高考江蘇卷)It sounds like something is wrong with the car39。s engine。where引導地點狀語從句。as if/though引導方式狀語從句，意為“好像”。4．一些名詞短語和副詞以及一些固定句式都可以表示“一……就……”的意思。t remember all the 表示兩個人或兩件事之間的對比，常用 while 或 whereas 引導，如：He is idle, while his brother is people like fat meat, whereas others hate of Cause, Result and Purpose(原因、結(jié)果和目的從句)原因從句主要由下列從屬連詞引導：1． Because, as, since。）What blood vessel is to a man39。例如：條件狀語從句就是用一個句子來作條件狀語。Someone knocked at the door when I was ，有人敲門。When you have finished your work, you may have a ）從句表示“隨時間推移”連詞能用as，不用when 或while。He called me after he had finished his 。當主句的謂語動詞是持續(xù)性動詞時，主句常用肯定形式；當主句的謂語動詞是非持續(xù)性動詞時，從句常用否定形式, not...until...意為“直到??才??”，這時的until可以用before 來替換。②、I had hardly / scarcely got home when it began to rain.③、I had no sooner got home than it began to rain.④、As soon as I got home, it began to ：如果hardly, scarcely 或no sooner置于句首，句子必須用倒裝結(jié)構(gòu)：Hardly / Scarcely had I got home when it began to