九大狀語從句重難點講解

1、狀語從句分類：（九大類） 時間、地點、原因、條件、讓步、結(jié)果、目的、方式、比較。Part 1 時間狀語從句：最常用的連接詞：When，while ，as , before , after , as soon as, until, not until 次常見的連接詞 :The mome ntmi nute, immediately, hardlywhe n, no sooner tha n 問題一：We wew swimming in the lakesuddenly the storm started.Awhen Bwhile CuntilDbeforeHe was about to tell

2、 me the secret someone patted him on the shoulderAas BuntilCwhile Dwhen-Did Jack come back early last night? -Yes,it was not yet 8:00 he arrived home.Abefore Bwhen Cthat DuntilHe was about halfway through his meala familiar voice came to his ears.Awhy Bwhere Cwhen Dwhile一、時間狀從中連接詞 when的用法小結(jié)：1、when引導(dǎo)

3、的時間狀從的謂語動詞可以是 可延續(xù)的，也可以是表短暫性的動詞，可用于 主句和從句動作 同時發(fā)生 或 從句動作 先于 主句動作。例：When the film ended,the people went back.When I lived there,I used to go to the seashore on Sundays.2、 可用作并列連詞，其意義是“那時，這時”，相當(dāng)于and at this'that time常用于以下句 式：was about to do sth .when be (on the point of) doing sth.when (剛要這時突然 )3、還可

4、以表示 原因“既然”，相當(dāng)于since,considering that如:It was foolish of you to take a taxi when you could easily walk there in 5 minutes.問題二:The cost of living in Glasgow is among the lowest in Britain,the quality of life isprobably one of the highest.Asince Bwhen Cas DwhileI accept that he is not perfect,I do actu

5、ally like the person.AWhile BSince CBefore DUnless二、時間狀從中連接詞 while 的用法小結(jié):1、while 引導(dǎo)的動作必須是 持續(xù)性 的，強(qiáng)調(diào)某一段時間，主從句動作 同時發(fā)生，或主從 句中的動作或事物在從句中的動作或事情的進(jìn)展 過程中 發(fā)生。如:Please don't talk so loud while others are working.2、while 作為并列連詞 ，意為“然而，卻”，表示對比。I was reading while my father was watching TV.3、while 可表示盡管,相當(dāng)于 a

6、lthoughI have to give up because of you while I like it so much.問題 3：I get older ,I get more optimistic.He hurried home,looking behind he went.he was going out,it began to rain.ASince BWhen CAs DWhile三、只用as,不用when或while的情況1、 用于表示同一個人的兩種動作交替進(jìn)行，指“一邊邊”女口：The girl sings as she goes to school.2、表示兩個 同步發(fā)生

7、的動作或行為，如：As time went by,she became more and more beautiful.3、表示兩個動作 緊跟著 發(fā)生，如：As he was going out,is began to rain,4、接在名詞后面表示某一個年齡段時。如：As a young man, he was active in sports.四、連接詞 when,while,as 的用法區(qū)別 :1、while引導(dǎo)的時間狀語從句的謂語動詞必須是 可持續(xù)的，而when引導(dǎo)的時間狀語從句 的謂語動詞既可以是 可持續(xù)的，也可以是表 短暫性 動作的動詞。WhenWhile he was eatin

8、g his breakfast,he heard the door bell rang.When I stopped my car,a man came up to me.（whil不可用）2、 從句動作發(fā)生在主句動作 之前時，只能用when引導(dǎo)，不可用while'as,如：When you have finished your work,you may have a rest.3、 表示“隨著”連詞用as不用when'while，如：As the election approached,the violenve got worse.4、如果主句表示的是 短暫性 的動作，從句用

9、 延續(xù)性動作的進(jìn)行時態(tài) 表示一段時間正在進(jìn) 行的動作時，三者可互相交換使用。如：WhenWhileAs I was walking down the street,I came across an old friend of mine.五、其他引導(dǎo)時間狀語從句的連接詞：1、一 些詞，女口 the momentminuteinstant,immediately,directly,instantly,hardlywhen,no soonerthan等，也可因的一個時間狀語從句，相當(dāng)于 as soon aS的意思。如：It is not wise that we stop our lesson im

10、mediately (when) the bell rings if we can'tfinish our task.2、一些含有 time 的名詞短語， 如 everyeachnext time,by the time 等，以及 the dayyear,the morning 等也可以引導(dǎo)一個時間狀語從句。如：The day he returned home,his father was already dead.Next time you come ,please bring your ID card.3、如果hardly或no sooner或scarcely置于句首，句子必須用部

11、分倒裝結(jié)構(gòu)。如：Hardly had I got home when it began to rain.問題 4：-Was his father very strict with him when he was at school?-Yes,he has never praised himhe became one of the top students in the class.A 、 afterBunless CuntilDwhenA good storyteller must be able to hold listener 's curiority he reaches the

12、 end of thestory.Awhen Bunless Cafter DuntilIt was not she took off her dark glasses I realized she was a famous film star.Awhen;that Buntil;that Cuntil;when Dwhen;then六、till,until和 not until 用法：1、untiltill 引導(dǎo)時間狀語從句用于肯定句中時， 主句的動詞時延續(xù)性動詞， 表示動作或狀 態(tài)一直持續(xù)到 untiltill 所表示的時間，意為“某動作一直持續(xù)到某時間點才停止” ，譯為 “直到為止”。Y

13、ou may stay here until the rain stops.2、用于否定句時，主句謂語動詞時非延續(xù)性動詞，從句為肯定，意為“直到 才”女口：He wouldn'tgo to bed till/until he had finished the work.3、until 可以置于句首， till 不行。如：Until you told me , I had no idea for it.4、notuntill句型中的強(qiáng)調(diào)和倒裝說法：It iswas not un til thatNot un til+從句+助動詞+主句。例：Not until you told me di

14、d I hace any idea for it.七、連接詞 before 的小結(jié) ：1、詞義：The American Civil War lasted four years before the North won in the end在之后，才 ）He rushed out of the room before I could say a word.（-還沒來得及，就 ）It was evening before we reached the little town of Winster.在之前就 )He make a mistake,but the n he corrected the

15、 situati on before it got worse沒等就)2、其他句型：1、 it+ (will/would ) be +時間段+before過了(多長時間)才 ”It will be some time before we know whether the drug takes effect or not.It was quite a few years before he finally finished the novel.2、 it+ (will/would ) be not + 時間段 +before過不了多久就 ”It will be not long before a

16、 helicopter arrived on the scene to rescue the surviors of the air crash.It wasn't2 years before you go to join in the final examination.3、 it+be+時間點+before“發(fā)生時，是(時間)”It was not yet 8:00 before he arrived home.八、 連接詞 since 的用法 ：注：si nee的用法主要有兩點：一是表示“自從 以來”，二是表示“既然”。1、若 since 引導(dǎo)的狀語從句的謂語動詞是 終止性的過去

17、時 ，則從句表示的時間是“從 動作開始的那一刻起” 。如：He has studied very hard since he came to our school.We have been missing them since they left here.2、若 since 引導(dǎo)的狀語從句的謂語動詞是 持續(xù)性動詞 或表示狀態(tài)的動詞的過去時 時， 則從句表示的時間是“從持續(xù)動作或狀態(tài) 結(jié)束時算起”。如：I have n'heard any n oise si nee I slept. Sleeps 持續(xù)性動詞，sleep 的動作結(jié)束時，即“醒來” 時，譯為“我醒后還未聽到任何聲響。 ”

18、John is now with his parents in New York .It is already 3 years since he was a teacher.3、若 since 引導(dǎo)的狀語從句的謂語動詞是 持續(xù)性動詞的現(xiàn)在完成時 則表示動作和狀態(tài)延續(xù)到現(xiàn)在(說話時) ，其表示的時間的 起點應(yīng)從動作之時算起。如：I have n'heard from him si nee he has lived there這里的 has lived 表示動作的持續(xù)性，時間的 起點應(yīng)從“開始居住”時算起， “自從他(開始)住在那兒，我就一直沒有收到他的來信” Sinee we have

19、owned a ear,we have gone eamping every year.4、句型it is + 一段時間+since與it has been 一段時間+sinee意思相同，時間的計算 從since從句的動作完成或狀態(tài) 結(jié)束時算起。但是，在該句型中，since從句中同樣 存在著謂語動詞的終止性和延續(xù)性的區(qū)別。例：It is 2 years since he left the country.It is 3 years since the Whites were in London.It is 5 years since the boy became a young pioneer

20、.()It is 5 years since the boy was a young pioneer.()part2 地點狀從 part3 原因狀從 part4 比較狀從part5 目的 狀從part6 結(jié)構(gòu)狀從part7 條件狀從問題 5：The WTO can not live up to its name it does include a country that is home to one fifthof the mankind.Aas long as Bwhile CIF Deven thoughIt is known to all that _you exercise regu

21、larly,you won'tkeep good health.Aunless Bwhenever Calthough Dif1、unless二if not，意思是“除非”、“如果不就”.i can see,there is one possible way yo keep away from the danger.Aas long as BAs far as CJust as DEven ifI always take something to read when I go to the docto'rs _I have to wait.Ain case Bso thatCin order Das if2、 As l