【正文】 所說情況是事實或實現(xiàn)的可能性較大。漢譯常作“仿佛??似的”，“好像??似的”，例如：They pletely ignore these facts as if(as though)they never ，就仿佛它不存在似的。（與事實相反，謂語用虛擬語氣。）He looks as if(as though)he had been hit by 。（與事實相反，謂語用虛擬語氣。）It looks as if the weather may pick up very 。（實現(xiàn)的可能性較大，謂語用陳述語氣。）說明：as if / as though也可以引導一個分詞短語、不定式短語或無動詞短語，例如：He stared at me as if seeing me for first ，就像第一次看見我似的。He cleared his throat as if to say ，像要說什么似的。The waves dashed on the rocks as if in ，好像很憤怒。原因狀語從句用法要點。常用的引導連詞有because, as和since。三者的區(qū)別是：在回答問題的時候，使用because；對于顯而易見的原因，常用as或since；as和since的從句常放在主句之前，而because的從句常放在主句之后。Why did you go?I went because Tom told me to ？那是因為湯姆叫我去。He was angry not because we were late but because we made a ，而是因為我們弄出了聲音。As it was raining hard, we had to be ，我們只好呆在家里。Since you feel ill, you39。d better not go to ，你最好不要去上班了。比較：because, since, as和for1）because語勢最強，用來說明人所不知的原因，回答why提出的問題。當原因是顯而易見的或已為人們所知，就用as或 since。I didn39。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。但如果不是說明直接原因，而是多種情況加以推斷，就只能用for。He is absent today, because / for he is must be ill, for he is absent 、目的狀語從句用法要點。常用的引導連詞有so that, that和in order that譯為：以便，為了，目的是。此外還有l(wèi)est, for fear that, in case等詞引導，例如，Please speak more slowly so that we can make full ，以便我們能作詳細筆記。I shall write down your address that I may not ，以免忘記。I sent the letter by air mail in order that it might reach him in ，以便他能及時收到。You must speak louder so that /in order that you can be heard by wrote the name down for fear that(lest)he should forget take more clothes in case the weather is ：目的狀語從句可以用動詞不定式來替換做目的狀語We work harder than usualfinish it in a 成工作。結果狀語從句結果狀語從句常由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。比較：so和 such其規(guī)律由so與such的不同詞性決定。such 是形容詞，修飾名詞或名詞詞組，so 是副詞，只能修飾形容詞或副詞。so 還可與表示數(shù)量的形容詞many, few, much, little連用，形成固定搭配。so foolishsuch a foolso nice a flowersuch a nice flowerso many / few flowerssuch nice flowersso much / little rapid progressso many peoplesuch a lot of people（so many 已成固定搭配，a lot of 雖相當于 many，但 a lot of 為名詞性的，只能用such搭配。）so?that與such?that之間的轉換既為 so與such之間的轉換。The boy is so young that he can39。t go to is such a young boy that he can39。t go to school條件狀語從句用法要點。我們主要看一下由if引導的條件狀語從句。if 意為“如果”，引導條件狀語從句時，表示假如有從句的動作發(fā)生就(不)會有主句的動作發(fā)生。例如：If it doesn39。t rain tomorrow, we will go there by ，我們就騎自行車去那里。If I get there early, I can see the doctor ，我就可以快點看病。連接詞主要有 if, unless, as/so long as, on condition that 等。.if 引導的條件句有真實條件句和非真實條件句兩種。非真實條件句已在虛擬語氣中闡述。unless = if 39。s go out for a walk unless you are too you are not too tied, let39。s go out for a You will be late ___ you leave 答案A。句意：除非你立即走，否則你就回遲到的?？赊D化為 If you dong leave immediately, you will be 、D句意不對，or表轉折，句子如為 You leave immediately or you will be though, although注意： 當有though, although時，后面的從句不能有but，但是 though 和yet可連用Although it39。s raining, they are still working in the ，但他們仍在地里干活。He is very old, but he still works very ，但仍然努力地工作。Though the sore be healed, yet a scar may ，但傷疤留下了。（諺語）典型例題1）___she is young, she knows quite a 答案：C。意為雖然她很年輕，卻知道許多。2)as, though 引導的倒裝句as / though引導的讓步從句必須表語或狀語提前（形容詞、副詞、分詞、實義動詞提前）。Child as /though he was, he knew what was the right thing to do.= Though he was a small child, he knew what was the right thing to ： 。，其他助動詞放在主語后。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。Try hard as he will, he never seems able to do the work satisfactorily.= Though he tries hard, he never seems?雖然他盡了努力，但他的工作總做的不盡人意。3)ever if, even We39。ll make a trip even though the weather is )whether?or不管??都Whether you believe it or not, it is )“no matter +疑問詞” 或“疑問詞+后綴ever”No matter what happened, he would not happened, he would not ：no matter what = whateverno matter who = whoeverno matter when = wheneverno matter where = whereverno matter which = whicheverno matter how = however注意：no matter 不能引導主語從句和賓語從句。（錯）No matter what you say is of no use now.（對）Whatever you say is of no use 。(Whatever you say是主語從句)（錯）Prisoners have to eat no matter what they39。re given,（對）Prisoners have to eat whatever they39。re 。三：主句與從句時態(tài)一致的問題。在時間狀語從句和條件狀語從句中，主句和從句之間的時態(tài)一致問題一般分下列兩種情況：，或主句中有情態(tài)動詞，或主句中謂語動詞是一般將來時，那么從句用一般現(xiàn)在時表示一般將來時。例如：Be careful when you cross the 。Put up your hand if you have any questions to ，請舉手。The traffic must stop when the lights are ，車輛必須停下。，那么主從句都可以用一般過去時。例如：She could sing when she was four years 。第五篇：英語狀語從句（三）狀語從句（一）時間狀語從句例題 I didn’t manage to do it _____ you had explained 分析 時間狀語從句在復合句中作狀語，表示主句動作發(fā)生的時間。引導這種從句的詞有after, before, as, when, while , till , until, since, once。連接副詞immediately 等；起連接作用的短語as soon as, by the ：● Soon there were so many deer that they ate up all the wild + adj.(adv.)+that+從句●The boy is so old that he can go to + adj.+ a(an)+單數(shù)名詞●He is so good a student that we all like , hardly…when, no sooner…than等。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，我才設法把這件事做好?！备鶕?jù)題意，須由until 引導此例的時間狀語從句，所以正確答案應為B。（二）地點狀語從句例題 When you read the book , you’d better make a mark _____ you have any place 分析 地點狀語從句在復合句中作狀語，表示主句的動作發(fā)生的處所或方向，這種從句通常用連接副詞where，wherever(無論在哪里，無論到哪里)引導。例如： ● Where there is oppression, there is ：“你看書時，最好在有問題的地方做一個記號。”此復合句中的從句是個地點狀語從句，須用連接副詞where 引導，所以正確答案應為D。（三）結果（程度）狀語從句例題 She told us _____story that we all forgot about the an interesting an so interesting分析 結果狀語從句在復合句中作狀語，表示主句的動作所引起的結果。這種從句由such…that, so…that, so that等引導。其用法舉例如下： 1． Such +a(an)+(adj.)+單數(shù)可數(shù)名詞+ that+從句● He left in such a hurry that he forgot to lock the +(adj.)+復數(shù)可數(shù)名詞+從句●He had such long arms that he could almost touch the +(adj.)+不可數(shù)名詞+that+從句●He made such rapid progress that he did very well in the midterm “such+ adj.+ n.+that+ clause”這個結構中，其中名詞由