時(shí)間狀語從句PPT教學(xué)課件

1、Adverbial Clauses,（狀語從句）,1,1.Adverbial Clauses of Time:（時(shí)間狀語從句）,Different Kinds of Adverbial Clauses:,2.Adverbial Clauses of Reason(原因狀語從句）,3.Adverbial Clauses of Conditions(條件狀語從句）,4.Adverbial Clauses of Place (地點(diǎn)狀語從句）,5.Adverbial Clauses of Purpose (目的狀語從句）,6.Adverbial Clauses of Result（結(jié)果狀語從句）,7.

2、Adverbial Clauses of Comparison（比較）,8.Adverbial Clauses of Concession(讓步）,9.Adverb Clauses of Manner(方式狀語從句 ),2,I. 時(shí)間狀語從句: when, while, as, after, before, since, until/till, as soon as, hardly/scarcelywhen, no soonerthan, every time, each time, the moment, the minute, the second, by the time , immed

3、iately .,3,一、 when/while/as,When + (1)延續(xù)性動(dòng)詞 e.g. When I was young, I liked dancing. (2)瞬間性動(dòng)詞(不能用 while） e.g. It was snowing when we got to the airport (3)表示“這時(shí)” “正在這時(shí)候” e.g. I was walking on the street when suddenly someone patted me on the shoulder. (4) 主從句動(dòng)作先后發(fā)生(不能用 while） e.g. When I got to the c

4、inema, the film had already begun.,4,While + (1) 延續(xù)性動(dòng)詞 e.g. While I slept, a thief broke in. (2) 表示兩種情況對(duì)比，“然而” “而” e.g. They were surprised that a child should work out the problem while they themselves couldnt. (3) 表示“趁著時(shí)候”(強(qiáng)調(diào)主從句動(dòng)作同時(shí)發(fā)生). e.g. Strike while the iron is hot.,5,As 側(cè)重主從句動(dòng)作同時(shí)發(fā)生，常譯為 “一邊一邊

5、.” e.g.The students took notes as they listened. ) “隨著” e.g.As time goes by, we have gained more and more knowledge. 注意 若主句謂語是短暫性動(dòng)作，從句用延續(xù)性動(dòng)詞的進(jìn)行時(shí)態(tài)表示在一段時(shí)間內(nèi)正在進(jìn)行的動(dòng)作時(shí)，三者可以互換！ When/While/As we were having an English class, a stranger broke in.,6,Practice,_l was walking down the street，I saw some policemen

6、 _they heard the news，they were surprised They shouted slogans _they passed the square.,When/While/As,When,as,7,二、 before,常見句型: It will be + 一段時(shí)間 + before. It was + 一段時(shí)間 + before. It wont be long before It wasnt long before 肯定句意為 “多長(zhǎng)時(shí)間后才” 否定句意為“用不了多長(zhǎng)時(shí)間就” It will be a long time before we finish this

7、dictionary. 我們需要很長(zhǎng)的時(shí)間才把這部詞典編譯完。 It was not long before the thief was caught. 小偷不久就被抓住了。,8,before It will be half a year before I come back. It wont be half a year before we meet again. We sailed four days and nights before we saw the land. We hadnt run a mile before he felt tired.,肯定句 “ 才” 否定句 “就”,i

8、t will be +一段時(shí)間 before.多久之后才.,it wont be +一段時(shí)間 before.不久就.,9,1. Scientists say it may be five or six years _ it is possible to test this medicine on human patients. 2. He was told that it would be at least three months _ he could recover and return to work. 3.Someone called me in the middle of the n

9、ight, but they hung up _ I could answer the phone.,before,before,before,10,三、after,例： 1、He came to see me after I arrived. 2、Immediately after he was hurt, he was taken to the hospital.,11,注：before和after引導(dǎo)的狀語從句，主從句發(fā)生的動(dòng)作先后順序很明確，因此after從句中的謂語動(dòng)詞常常使用一般過去時(shí)來代替過去完成時(shí)。 After he (had) finished his homework, T

10、om began to play computer games.,12,三 Since,注意 since 引導(dǎo)的時(shí)間狀語從句，主句常用完成時(shí)，從句常用一般過去時(shí)。 He has written to me frequently since he was ill. 句型 It is /has been + 一段時(shí)間+ since ，如果從句是延續(xù)性動(dòng)詞，,用一般過去時(shí)和現(xiàn)在完成時(shí)不同。 It is/has been two years since he was in the army. 他離開軍隊(duì)兩年了。 It is/has been two years since he has been in

11、 the army. 他當(dāng)兵兩年了。,13,1.-How long _ the shop_ open? -Since 1992. (=Since 15 years ago) 2.-Since when _the country _ open to international trade? -1978, I suppose. 3._ 5 years _ he graduated from college. _ 2 years _ he smoked.,has,been,has,been,It is,since,It is,since,14,Practice it is + 時(shí)間+ since b

12、efore when that It is five years _he finished his research. It was five years _he finished his research. It was five years later _he finished his research. It was 5 oclock _ he got home. It was at 5 oclock _ he got home.,when,that,since,before,that,15,四、名詞詞組引導(dǎo)的狀語從句一些表示時(shí)間的名詞詞組, 如：the moment, each tim

13、e, every time, the first time, the year等,也用于引導(dǎo)時(shí)間狀語從句，這時(shí)它們擔(dān)當(dāng)著連接詞的功能。,_he went to Shanghai, he paid a visit to his former teacher A. For the first time B. The first time _l saw him, I thought of his father A. The moment B. At the moment,The first time,The moment,Each time he came, he would bring us a

14、lot of flowers,16,-Did you remember to give Mary the money you owed her? -Yes. I gave it to her _ _ _ I saw her.,the moment,the minute,the instant,17,Practice 1.When every time I was in trouble, he would come to help me. 2. At next time you come, do remember bring your son here. 3.For the first time

15、 I met the girl, I felt in love with her. 4.You are welcome to come back at any time you want to. 5.At the last time she saw James, he was lying in bed. 語法規(guī)則：,every time,each time,next time,the first time,any time 等名詞短語引導(dǎo)狀語從句不加介詞。,18,關(guān)連詞組 hardly/scarcelywhen no soonerthan as soon as 三種句子結(jié)構(gòu)表示“一就”。 注意

16、： 時(shí)態(tài) as soon as 以一般時(shí)態(tài)代替將來時(shí)態(tài) no sooner, hardly, scarcely后的句子用過去完成時(shí)，than/when 后的句子用一般過去時(shí)。 倒裝 當(dāng)hardly或no sooner位于句首時(shí)，要倒裝。,五、一就,19,我一到達(dá)上海就給你打電話。 時(shí)態(tài)要求： 改錯(cuò): I hardly got home when it began to rain 時(shí)態(tài)要求：,I will call you as soon as I arrive in Shanghai.,had,以一般現(xiàn)在時(shí)代替將來時(shí),主句用had done, 從句用did,no sooner.than,har

17、dly.when,scarcely.when,20,He had hardly arrived when it began to snow Hardly _when it began to snow We had hardly walked into the hall when the lecture started Hardly _ walked into the hall when the lecture started _she gone to sleep than the telephone rang once more _the boy reached the door than h

18、e came back,had he arrived,had we,No sooner had,No sooner had,倒裝,21,六、until/till,until / till “直到止”(肯定句，主句是延續(xù)性動(dòng)詞); I ll waite until/till the concert is over (till不能放在句首，但是until了的位置不受限制) notuntil “直到才” he didnt leave the office until he finished the task. 注意：倒裝句、強(qiáng)調(diào)句，及位于句首時(shí)，只能用until。 Not until I retur

19、ned did she finish her homework. It was not until I returned home that she finished her homework.,22,1 The meeting didnt start_ everyone was there A. becauseB. until C. why D. if 2 The boy _ to bed _ his mother came in. went not; until B. didnt go; after C. went; until D. didnt go; until,23,Practice

20、 1.Mother waited for Tom till/ until far into the night. ( 持續(xù)性動(dòng)詞) 2.Tom didnt get back till / until everything was all right.(短暫性動(dòng)詞) =_ everything was all right _. = _ everything was all right _ Tom got back.,Not until,did Tom get back,It was not until,that,24,六、by the time 引導(dǎo)的從句,By the time we got to the station, the bus _ left. By the time you receive this letter, I _left this city for my hometown.,had,will have,25,小結(jié)練習(xí) 1.They walked out of the room _the meeting was over. 2