《时间状语从句讲解和练习(答案)》由会员分享，可在线阅读，更多相关《时间状语从句讲解和练习(答案)（6页珍藏版）》请在金锄头文库上搜索。
1、时间状语从句用句子表达一件事情或一个行为发生的时间，这个句子就叫时间状语从句。时间状语从句根据其所表示的 时间不同，所使用的连词也不同。下面我们一起来看一下几个常见的时间状语从句：1. when引导的从句：表示主句的动作和从句的动作同时发生，或从句的动作发生在主句动作之前。例如：I was going out when a visitor came.(动词动作同时发生。)我正要出门，有客人来访。I shall tell her the good news whe n she comes.她来时，我将告诉她这个好消息。小试牛刀：I found mother cooki ng for me. I
2、got home.(when)He was liste ning to the radio whe n Ihome. (get)2. while引导的从句：表示 当过程中”，强调某一段时间内主句和从句中谓语动词所表示的动作在同一时期发生。由于while从句表示一个持续的行为，所以从句中要用持续性动词，并且持续性动词常用进行时态。例如：Keep an eye on my little sister while I am away.我不在时，请照看一下我的小妹妹。While we were watching TV, Jim came in.我们看电视的时候，Jim 进来了。小 试 牛 刀：Itst
3、artedtorain.We wereplay ingfootball.(while)Lucy was clea ning the roomLily_was_liste ning to music.3. as引导的时间状语从句：表示当的时候；一边 一边；随着”，其从句的主语与主句的主语往往是同一人或物。例如： She sang as she worked.她一边工作一边唱歌。=She was singing as she was work ing.I saw him as he was getting off the bus.正当他下公共汽车时 ，我看见了他。小试牛刀： we walked,
4、we talked.You will grow wiser_you_grow_older.4. before引导的从句：一般表示主句的动作发生在从句动作之前。例如：I did n k now any En glish before I came here.我到这儿来之前，一点英语都不懂。例如：I had writte n my report before my father came back.小试牛刀： He bought the ticket he_we nt_to_see the film.5. after引导的从句：表示主句的动作发生在从句动作之后。例如：After he locked
5、 the door, he left.他锁上门后，就走了。他做完工作后，和朋友下After he had_fi ni shed_his_work, he played a game of chess with his friend. 了一盘棋。小试牛刀：I will go out to play basketball with you. I finish my homework.(after)He left the classroomhe had_fi ni shed_his homework the other day.6. since引导的从句：表示自从以来”，从句中的动词一般表示动作的起
6、点，用过去时。主句中的动词表示动作延续的情况，一般用现在完成时。如果主句中的动词表示的不是延续的动作而是表示目前的状态，可用 一般现在时。例如： Since he met this good friend, he has made great progress in his studies.自从遇见了这个好朋友，他已在学习上取得了巨大的进步。例如：It is twe nty years si nee she joi ned the Party.她入党二十年了。(主句中的动词表示的是状态，用现在时。)小试牛刀：it is five years si nee welast_time.(meet)M
7、r gree n has taught inthat schoolsi nee he (come)_toCh inathree years ago.7. until引导的从句：表示一个动作持续到某一时刻。（1） 表示 直到”,如果主句中的谓语动词是延续性动词时，用肯定或否定形式都可以，但表达的意思不同。（2） 表示 直到才”，主句用否定式，从句用肯定。如果主句中的谓语动词是瞬间动词时，必须用否定形式。例如：They worked un til it was late.他们一直工作到天黑。She didn go to bed until she finished her homework.她写完
8、作业才睡觉。小试牛刀： All the people left. He waited.（until）He went to bed . his father came home.& as soon as引导的从句表示一就”，强调动作紧密相连。例如： As soon as she came to the classroom, she began to read English.她一至U教室，就开始读英语。小试牛刀： Westart to sing. Its 12 oclock.(as soon as)9. by the time 至U。为止(所在句子的主句应用完成时)他到家的时候，他爸爸已经走了。
9、（begin ）我到校时，已经开始例如： By the time he gets there , his father has already gone.小试牛刀： By the time I got to school, the class 上课了。知识扩展1. it is +时间段+since+ 一般过去时（从。以来多长时间了）例如：it is five years si nee we met last time.从我们上次见面已经五年了。2. it is/ will be +时间段 +before+ 一般现在时例如：it is a long time before I go to sle
10、ep .it was an hour before the police arrived.it was+ 时间段+before+ 一般过去时（。才）小试牛刀：It(be) ten years since weIt过了很长时间我才睡着。过了一个小时，警察才来。(leave) that city .is reported that it may be two or three monthsit is possible to test this medicineon ani malsHow long do you think it will beChina sends a manned spaces
11、hip to the moon3、when和while的区别连词区别所接动词例句whe n主从句同时发生、 先后发生瞬间性动词、 持续性动词When you arrive in London, please give us a call.When he was hav ing his lun ch, he heard the door bell ring.as主从句同时发生、 一边一边、随着持续性动词As time went on, he grew more and more impatie nt.As we walked, we talked.while主从句同时发生 然而、既然持续性动词W
12、hile she was readi ng a no vel, her mother was cook ing the dinner.Some people waste food while other have nte no ugh.I m going to the post office.While you re there, can you get me some stamps?4、巧记10个瞬间性动词在学习以when和while引导的时间状语从句时，用到了瞬间动词和延续动词。常见的瞬间动词有die（死）,come（来）, go（去）,eave（离开）,arrive（到达）,begin（
13、开始）,buy（买）,join（ 加入）,borrow（借 进，借出），return（归还）等。这10个瞬间动词可用两句口诀来帮助记忆：开始离去，借来还，出生入死，买到家。注释：1. 开始离去,借来还为 begin,leave,go,borrow,come,return六词；2. 出生入死，买到家为join,die,buy,arrive 四词。t be back,3. 各词改为相应的延续动词为：begin 宀 be on, leave be away from, borrow keep, go be, come be here, return join tbe in, die be dead,
14、 buy have, arrive be here 等。5、状语从句与主句的时态问题1. 由when、while引导的时间状语从句的时态：（主过从过）主句（过去进行时） 主句（一般过去时） 主句（一般过去时） 主句（过去进行时）+when +从句（一般过去） +when +从句（过去进行时） +while +从句（过去进行时） +while +从句（过去进行时）注意：看动词为短暂性动词用一般过去时，动词为延续性动词则用过去进行时。小试牛刀： Mother (cook) supper when I (get) home yesterday.Last Sun day I(meet) Lin Hon
15、g whe n I(walk) in the street.Whe n the stude nts(have ) a meeti ng, the teacher(come) in.While Han Meimei(sweep) the floor, Lucy(carry) water. 2. 由when、after、before、by the time引导的时间状语从句的时态：主句、从句的谓语动词都已完成，则先发生的动作用过去完成时，后发生的动作用一般过去时。例如： After he had_finished_his_work, he played a game of chess with his friend.小试牛刀： When they(get)_to_the cin ema last light, the film(start).I (go)_out_with_my friends after I(fini sh) all the ho
