從句類型狀語從句

1、現(xiàn)在學習的是第1頁，共18頁 . 時間狀語從句 . 原因狀語從句 . 條件狀語從句 . 讓步狀語從句 . 方式狀語從句 . 目的狀語從句與結果狀語從句現(xiàn)在學習的是第2頁，共18頁在句子中作狀語成分的從句叫狀語從句。依據(jù)其含義，可分為時間、地點、原因、目的、結果、條件、讓步等狀語從句，下面就各種狀語從句的疑難問題展開。 . 時間狀語從句時間狀語從句通常由下列連詞引導：after, before, since, as, when, whenever, while, till, until, once, as soon as, scarcely (hardly) when (before), no

2、sooner than, immediately (that), directly( that), the moment, the instant (that)等。1. as, when 和 while 都可以表示主句中動作發(fā)生的背景，也可以表示主句的動作與從句的動作同時發(fā)生。因此，在很多情況下這三個連詞可以互換使用。例：example:as/when/while I was reading a book, he came into my room.雖然很多情況下可以互換，但while一詞用作時間狀語從句的連詞時， 一般不能與短暫性動詞一起使用，因為while在時間概念上表示一段時間，不能表示

3、非持續(xù)性動作。因此下列句子中的while應該改為when或as.Example:The mother was overjoyed while she found the lost child.連詞when的位置很靈活，下面兩句話的意思非常相近，只是英譯漢時稍有不同。Example:We were driving swiftly on the road when the car broke down. When we were driving swiftly on the road, the car broke down.現(xiàn)在學習的是第3頁，共18頁2.since 用在時間狀語從句中常見模式是：

4、主句為完成時，而從句為一般過去時。其實這并不是唯一的選擇。下面這些時態(tài)搭配都是可以的。Example:Since her parents died, she has lived a poor life.I havent been to the Great Wall since I have been in Beijing.Two years had passed since my daughter had married him.It seems ages since we saw him last.It has been ages since I felt happy.3.once, dir

5、ectly, immediately原是修飾連詞that與when的副詞?，F(xiàn)在這三詞已單獨地引導狀語從句，意義相當于as soon as，同時名詞詞組 the moment, the instant, the minute 也可充當引導狀語從句的連詞。例：example:the moment the meeting is over, I will fly to New York.She wept aloud immediately she heard the news.I felt back home the instant I stepped on my homeland.現(xiàn)在學習的是第4頁

6、，共18頁 4.引導詞no soonerthan/ hardlywhen/ scarcelywhen 可以分別用來強調(diào)兩個非持續(xù)性動作的同時發(fā)生。例如： Example: I had no sooner got back to the kitchen than the door bell rang loud enough to wake the dead. 5. 時間狀語從句的主語與主句的主語一致時，或時間狀語從句的主語是不定代詞it 時，這時狀語從句的主語連詞同動詞be一起都可以省略。例： When (you are) in trouble, telephone to me. 現(xiàn)在學習的是第

7、5頁，共18頁 . 原因狀語從句1.原因狀語從句通常由because, since, as, now that, seeing (that), considering (that)引導。because, since, as都是引導原因狀語從句的連詞，其區(qū)別如下，because引導的狀語從句既可放在主句之前，也可置于主句之后，但置于主句之后情況居多。它所引導的原因狀語從句更強調(diào)原因。而由since與as引導的從句則更強調(diào)結果，且它們多數(shù)情況下放在主句之前。Example:He was fined because he had disregarded traffic rules.As I have

8、 seen him only twice, I am afraid I may not be able to recognize him in the crowd.2.以as 引導的原因狀語從句中的表語形容或名詞可以移到從句之前。在正式文體中，that 可以代替連詞as。例：Child as/that he was, he couldnt resist long.= since he was unarmed, he couldnt resist long.3.由because 引導的從句是狀語從句，它在句中應充當狀語，因此不能把它當作名詞從句而在句中充當主語、賓語、同位語等。Example:B

9、ecause another person lies is not the reason why you should.The reason he is absent from duty is because he is ill.現(xiàn)在學習的是第6頁，共18頁 . 條件狀語從句 引導條件狀語從句的連詞有：if, unless, as/so long as, provided (that), providing (that), on condition (that), suppose (that), supposing (that), when, in case等。最常見的條件句，其條件分句動詞用

10、一般現(xiàn)在時形式，主句動詞用will/shall+不定式。例如：if he doesnt come, Ill go alone.這種條件句中的條件可能實現(xiàn)，也可能不實現(xiàn)。它還可以有下列這種句式：If you wake up before lunch, give me a call.1. 但是條件句并非只有這一種時態(tài)搭配。根據(jù)句意的需要，從句和主句的謂語動詞可以是多種時態(tài)形式。因此下面這些句子都是正確的。A：if I make a promise, I keep it.=whenever I make a promise, I keep it.B：If you heat ice, it melts

11、. = whenever you heat ice, it melts.B：這種時態(tài)搭配的條件句用于陳述普遍真理和一般常識，或解釋科學技術現(xiàn)象，也可以是習慣動作。此時句中的if意為whenever.有時也可以用過去時，表示過去的習慣動作?，F(xiàn)在學習的是第7頁，共18頁2. A：if you will reserve seats, we shall be sure of a comfortable journey.= if you are willing to reserve seats, B: Ill cook the meal if youll do the washing up. =Ill

12、cook the meal if you are willing to do the washing up.A,B 這種時態(tài)搭配的條件句中的will不是助動詞，而是情態(tài)動詞，意為“be willing to, agree to do what is suggested”.3. A: if we should miss the 10clock train, we shant get there till after lunch. = if by any chance we miss the train, B: If you should die before retiring age, you

13、widow will receive your pension for a period of 7 years after your death. = if by any chance you die,A,B 句中的條件句表示一種不太可能實現(xiàn)的條件。 4. A：If we caught the train, we would (could, might, etc.) get there by lunch time. B: if I came into a fortune, I would give up working.A,B句中的條件句也表示很不能實現(xiàn)的條件?，F(xiàn)在學習的是第8頁，共18頁Ex

14、cises:用上述句型完成下列句子。1.well just manage to catch the train if _.（我們快點）2.if I see him again, I _.（我會直接與他說）3. if my manager will lend me money, I _.（給自己買一棟房子）4. If there is a power failure, all electrical appliances_.（停止工作）5. if you should say such to me, I _.（很生氣）6. if I made a lot of money, I _.（去西方各國旅

15、游）7. if we got there on time, they_.（會很高興）8. perhaps he _ if you spoke to him yourself.（同意）9. if flowers dont get any water, they_.（馬上死去）10. if you offended a dog, it_.（咬傷你）現(xiàn)在學習的是第9頁，共18頁條件句有時不一定有一個引導條件句的連詞，有幾種特殊的句型本身就是一種隱含的條件句。其中有：祈使句+and(or)+陳述句Example:Set your alarm clock, or (else) youll oversle

16、ep.A bit more sweet food, and youll become fat.現(xiàn)在學習的是第10頁，共18頁 . 讓步狀語從句引導讓步狀語從句的連詞有：although, though, even if, even though, if, granted that, granting that, when, while, whetheror, whatever, whoever, etc., no matter what, no matter who, etc,. as, that等。1.在正式文體中，though除了可以放在句首外，也可引導這樣的讓步狀語從句，即把主語補語或狀

17、語等放在從句之首，從句通常位于主句之前。能像though一樣引導這樣的讓步狀語從句還有as和that。在這種讓步狀語從句中，位于句首的可以是名詞、形容詞、副詞、動詞或“動詞+賓語”。Examples:Rich as/that he is, he is thrifty.Changed your mind as you may, I am determined to carry it through to the end.Hard though they worked, they could scarcely earn enough to make both ends meet.2.詞尾為-eve

18、r的wh-詞（如whatever, whenever）可以與“no matter+wh-詞”換用，引導讓步狀語從句?！眓o matter+wh-詞”比較常用于口語中。Example: Whichever alternative you choose, there wont be any real solution to the question.現(xiàn)在學習的是第11頁，共18頁3.whetheror 引導讓步狀語從句時作“不論是否”或“不論還是”解釋，謂語動詞有時可用虛擬語氣examples:I will do it whether you like it or not.whether be r

19、ich or poor, men should be equal before the law.4. while 引導的從句置于主句首，有時也可看作是一個讓步狀語從句。Examples:While I admit that the problems are difficult, I dont agree that they can not be solved.5. 某些含有what或as的固定結構也可引導讓步狀語從句，其意義相同于詞尾為-ever的wh-詞。Examples:Come what may, we must remain cheerful.Say what you will, I

20、shall still have faith in my own opinion.6. 讓步狀語從句的主語與be可以省略，如果主語與主句主語一致，或者其主語為it時。Example:Though (we were) hungry and tired, we didnt stop working.現(xiàn)在學習的是第12頁，共18頁 Excises: 1._as_, he continued to give comfort and first aid to the other passengers. 2. every living thing,_, is made of cells. 3. no ma

21、tter what the cost, _. 4.poor_, he is honest. 5. while _, I cant agree with you. 6. even though _, he refused to help me.現(xiàn)在學習的是第13頁，共18頁 . 方式狀語從句 方式狀語從一般由as, as if, as though引導。在非正式文體中或口語中，也可用the way (that)來引導。例：In Rome, do as the Romans do.You look as though you had seen a ghost.1.當as引導的從句位于句首時，主句常

22、由so引出。這個so 的意思是“in the same way”。 為了加強語氣，又可在as前加用 ”just” 一詞。 有時在主句中，可將助動詞置于主語之前。Examples:As rust eats iron, so care eats the heart.As the lion is king of beasts, so is the eagle king of birds.As fire tries gold, so does adversity try courage.現(xiàn)在學習的是第14頁，共18頁2. 與方式狀語從句有關的習慣用法有：句首的“as it is”，句尾的”as it

23、is “, “過去分詞+as it is”, “現(xiàn)在分詞+as it is”等四種，現(xiàn)分別舉例說明如下：Examples:If he were not ill, he would go to see the play. As it is, he has to stay at home.You had better take the world as it is.He is my best friend, my second half, as it were.Hidden as it was by the trees, the tomb was difficult to find.Living

24、as we do in a remote village, we rarely have visitors.3. 如果方式狀語從句中的主語與主句的主語相似，或者主語是不定代詞it，從句中的主語與動詞be也能省略。Examples:He stamped the ground as if (he was) angry.He glanced about as though (he was) in search of something.現(xiàn)在學習的是第15頁，共18頁 . 目的狀語從句與結果狀語從句1. 目的狀語從句的引導詞有：in order that, so that, so, in case,

25、for fear(that), lest等。目的狀語從句中的謂語通常帶有情態(tài)動詞may, might, can, could, should, would等。Examples:I am saving money in order that I can go abroad for study.So arrange your holiday time that you will enjoy yourself.2. 引導結果狀語從句的連詞有：so that, sothat, suchthat, such that, that等。結果狀語從句可有情態(tài)動詞，也可不帶情態(tài)動詞。They owned ano

26、ther flat, so that they could invite more friends.The girl showed such great interest in music that she could play the piano at the age of four.3. 目的狀語從句與結果狀語從句非常相似，有時很難區(qū)別，特別是當兩種從句都由so that引導時。要區(qū)別他們除了根據(jù)上下文來判定外，還可以從以下幾個方面來分辨：1) 目的狀語從句通常有情態(tài)動詞，而結果狀語從句通常沒有情態(tài)動詞。We set to at once, so that the room will be cleaned out by