時間狀語從句PPT

1、關于時間狀語從句PPT第一張，PPT共二十九頁，創(chuàng)作于2022年6月 1.Adverbial Clauses of Time:（時間狀語從句）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 (地點狀語從句） 5.Adverbial Clauses of Purpose (目的狀語從句） 6.Adverbial Clauses of Result（結果狀

2、語從句） 7.Adverbial Clauses of Comparison（比較） 8.Adverbial Clauses of Concession(讓步） 9.Adverb Clauses of Manner(方式狀語從句 )第二張，PPT共二十九頁，創(chuàng)作于2022年6月I. 時間狀語從句: when, while, as, after, before, since, until/till, as soon as, hardly/scarcelywhen, no soonerthan, every time, each time, the moment, the minute, the

3、second, by the time , immediately .第三張，PPT共二十九頁，創(chuàng)作于2022年6月一、 when/while/asWhen + (1)延續(xù)性動詞 e.g. When I was young, I liked dancing. (2)瞬間性動詞(不能用 while） e.g. It was snowing when we got to the airport (3)表示“這時” “正在這時候” e.g. I was walking on the street when suddenly someone patted me on the shoulder. (4)

4、 主從句動作先后發(fā)生(不能用 while） e.g. When I got to the cinema, the film had already begun. 第四張，PPT共二十九頁，創(chuàng)作于2022年6月While + (1) 延續(xù)性動詞 e.g. While I slept, a thief broke in. (2) 表示兩種情況對比，“然而” “而” e.g. They were surprised that a child should work out the problem while they themselves couldnt. (3) 表示“趁著時候”(強調(diào)主從句動作同

5、時發(fā)生). e.g. Strike while the iron is hot.第五張，PPT共二十九頁，創(chuàng)作于2022年6月As 側重主從句動作同時發(fā)生，常譯為 “一邊一邊.” 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作，從句用延續(xù)性動詞的進行時態(tài)表示在一段時間內(nèi)正在進行的動作時，三者可以互換！ When/While/As we were having an English clas

6、s, a stranger broke in.第六張，PPT共二十九頁，創(chuàng)作于2022年6月Practice_l was walking down the street，I saw some policemen_they heard the news，they were surprisedThey shouted slogans _they passed the square.When/While/AsWhenas第七張，PPT共二十九頁，創(chuàng)作于2022年6月二、 before常見句型: It will be + 一段時間 + before. It was + 一段時間 + before. I

7、t wont be long before It wasnt long before肯定句意為 “多長時間后才” 否定句意為“用不了多長時間就”It will be a long time before we finish this dictionary. 我們需要很長的時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。第八張，PPT共二十九頁，創(chuàng)作于2022年6月beforeIt will be half a year before I come back.It wont be half a year bef

8、ore 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”it will be +一段時間 before.多久之后才.it wont be +一段時間 before.不久就.第九張，PPT共二十九頁，創(chuàng)作于2022年6月1. Scientists say it may be five or six years _ it is possibleto test this medicine on hu

9、man patients. 2. He was told that it would be at least three months _ hecould recover and return to work.3.Someone called me in the middle of the night, but they hung up _ I could answer the phone.before before before第十張，PPT共二十九頁，創(chuàng)作于2022年6月三、after例：1、He came to see me after I arrived.2、Immediately a

10、fter he was hurt, he was taken to the hospital.第十一張，PPT共二十九頁，創(chuàng)作于2022年6月注：before和after引導的狀語從句，主從句發(fā)生的動作先后順序很明確，因此after從句中的謂語動詞常常使用一般過去時來代替過去完成時。 After he (had) finished his homework, Tom began to play computer games.第十二張，PPT共二十九頁，創(chuàng)作于2022年6月三 Since 注意 since 引導的時間狀語從句，主句常用完成時，從句常用一般過去時。 He has written t

11、o me frequently since he was ill.句型 It is /has been + 一段時間+ since ，如果從句是延續(xù)性動詞，,用一般過去時和現(xiàn)在完成時不同。 It is/has been two years since he was in the army. 他離開軍隊兩年了。 It is/has been two years since he has been in the army. 他當兵兩年了。第十三張，PPT共二十九頁，創(chuàng)作于2022年6月1.-How long _ the shop_ open? -Since 1992. (=Since 15 yea

12、rs 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 beenIt is since It is since第十四張，PPT共二十九頁，創(chuàng)作于2022年6月 Practiceit is + 時間+ since before when thatIt is five years _he finished his research.It w

13、as 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.whenthatsincebeforethat第十五張，PPT共二十九頁，創(chuàng)作于2022年6月四、名詞詞組引導的狀語從句一些表示時間的名詞詞組, 如：the moment, each time, every time, the first time, the year等,也用于引導時間狀語從句

14、，這時它們擔當著連接詞的功能。_he went to Shanghai, he paid a visit to his former teacherA. For the first time B. The first time_l saw him, I thought of his fatherA. The moment B. At the momentThe first timeThe momentEach time he came, he would bring us a lot of flowers第十六張，PPT共二十九頁，創(chuàng)作于2022年6月 -Did you remember to

15、 give Mary the money you owed her? -Yes. I gave it to her _ _ _ I saw her.the moment the minutethe instant第十七張，PPT共二十九頁，創(chuàng)作于2022年6月 Practice1.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 I met the girl, I fel

16、t 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 等名詞短語引導狀語從句不加介詞。第十八張，PPT共二十九頁，創(chuàng)作于2022年6月關連詞組hardly/scarcelywhenno soonerthan as soon as三種句子結構表示“一就”。注意： 時態(tài) as so

17、on as 以一般時態(tài)代替將來時態(tài) no sooner, hardly, scarcely后的句子用過去完成時，than/when 后的句子用一般過去時。 倒裝 當hardly或no sooner位于句首時，要倒裝。 五、一就 第十九張，PPT共二十九頁，創(chuàng)作于2022年6月我一到達上海就給你打電話。時態(tài)要求：改錯: I hardly got home when it began to rain時態(tài)要求：I will call you as soon as I arrive in Shanghai.had以一般現(xiàn)在時代替將來時主句用had done, 從句用didno sooner.than,

18、hardly.when,scarcely.when第二十張，PPT共二十九頁，創(chuàng)作于2022年6月He had hardly arrived when it began to snowHardly _when it began to snowWe had hardly walked into the hall when the lecture startedHardly _ walked into the hall when the lecture started_she gone to sleep than the telephone rang once more_the boy reach

19、ed the door than he came backhad he arrivedhad weNo sooner hadNo sooner had倒裝 第二十一張，PPT共二十九頁，創(chuàng)作于2022年6月六、until/till until / till “直到止”(肯定句，主句是延續(xù)性動詞); 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、強調(diào)句，及

20、位于句首時，只能用until。 Not until I returned did she finish her homework. It was not until I returned home that she finished her homework.第二十二張，PPT共二十九頁，創(chuàng)作于2022年6月1 The meeting didnt start_ everyone was thereA. becauseB. until C. why D. if 2 The boy _ to bed _ his mother came in. went not; until B. didnt go

21、; after C. went; until D. didnt go; until 第二十三張，PPT共二十九頁，創(chuàng)作于2022年6月 Practice 1.Mother waited for Tom till/ until far into the night. ( 持續(xù)性動詞) 2.Tom didnt get back till / until everything was all right.(短暫性動詞) =_ everything was all right _. = _ everything was all right _ Tom got back.Not until did Tom get backIt was not until that 第二十四張，PPT共二十九頁，創(chuàng)作于2022年6月六、by the time 引導的從句 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.hadwill have 第二十五張，PPT共二十九頁，創(chuàng)作于2022年6月 小結練習1.They walked out of the room _the meeting was over.2.The