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1、Module 8 Public holidays Unit 3 Language in use,1. While were staying with them, were going to spend a few days in Qingdao. 2. Lets enjoy ourselves until we go back to school. 3. And its the last day before the new school year begins. 4. When September comes, it starts to get cooler. 5. As soon as i
2、ts 12 oclock, everyone shouts very loudly.,Language practice,时间状语从句,Grammar,when 当的时候 while 在期间 as 正当之时 before 在之前 after 在之后 since 自从以来 until 直到时为止 as soon as 一就,常见引导时间状语的连词：,状语从句 (2),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。常见的时间状语从句有:,1. 由 when 引导的时间状语从句： 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。如：,I was going out
3、 when a visitor came. (我正要出门, 有客人来访) (动作同时发生) I shall tell her the good news when she comes. (她来时, 我将告诉她这个好消息),2. 由 while 引导的时间状语从句： 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。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) W
4、hile we were watching TV, Jim came in. (我们看电视的时候, 吉姆进来了),3. 由 as 引导的时间状语从句： 表示时间 “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, 如：,She sang as she worked. 她一边工作一边唱歌。 (此句主从句还可使用进行时) She was singing as she was working.,I saw him as he was getting off the bus. 正当他下公共汽车时, 我看见了他。 As a child, he lived in Ameri
5、ca. 他小时候住在美国。 You will grow wiser as you grow older. 随着你年龄的增长, 你会变得更聪明。,4. 由 before 引导的时间状语从句： 一般表示主句的动作发生在从句动作之前。,I had written my report before my father came back. 我父亲回来之前, 我已写完我的报告。 (为了表明主句的动作发生或完成在从句动作 之前, 主句动词一般用过去完成时, 从句中 动词用过去时, 以区分动作的先后),I didnt know any English before I came here. 我到这儿来之前,
6、 一点英语都不懂。 (虽然主句的动作发生在从句动作之前, 主句 和从句中动词都可用过去时),After he had finished his work, he played a game of chess with his friend. 他做完工作后, 和朋友下了一盘棋。 (“做完工作”在前, “下棋”在后, 为了表 明动作的先后, 从句中的动词一般用 过去完成时, 主句中的动词用过去时),5. 由 after 引导的时间状语从句： 表示主句的动作发生在从句动作之后。如：,After he locked the door, he left. 他锁上门, 就走了。 (虽然从句的动作在前, 主
7、句的动作在后, 但表示过去发生的连续动作, 都可用过去时),6. 由since引导的时间状语从句： 表示“自从以来”, 从句中的动词一般表示 动作的起点, 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。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。,It is twenty years since she joined the Party
8、. 她入党二十年了。 (主句中的动词表示的不是延续动作, 而是状态, 用现在时),7. 由 until 引导的时间状语从句： a. 表示“直到为止”, 主句和从句都用肯 定式, 主句谓语动词为持续性动词。 b. 表示“直到才”, 主句用否定式, 从 句 用肯定式, 主句动词为短暂性动词。,They worked until it was late. 他们一直工作到天黑。 She didnt go to bed until she (had) finished her homework. 她一直到写完作业才睡觉。,8. 由 as soon as 引导的时间状语从句： 表示“一就”。如：,As s
9、oon as she came to the classroom, she began to read English. 她一到教室, 就开始读英语。,1. Lucy knew nothing about it _ her sister told her. A. because B. until C. if D. since,典型例题解析,3. The young man traveled all over the world _ he had a man-made leg. A. though B. if C. as D. because,B,2. Other people wont be
10、pleased if he _ the queue. A. will jump B. jumps C. jump D. jumped,B,A,4. The students will go to Summer Palace if it _ tomorrow. A. dont rain B. wont rain C. doesnt rain D. isnt rain,C,5. We went skating in the afternoon _ the party started. A. when B. before 6. _ dinner, we joined a group of frien
11、ds and we all went to the square. A. After B. Until 7. _ they were watching TV, we listened to music and sang traditional songs. A. When B. While,B,A,B,8. _ it was 12 oclock, we all shouted “Happy New Year” very loudly. A. After B. As soon as 9. We stayed in the square _ one oclock. A. until B. afte
12、r 10. _ the party was over, we walked back to our hotel. A. When B. While,B,A,A,11. I have been trying my best to study English _ I want to have a chance to be a volunteer for the Beijing Olympics. (2007太原市)A. until B. because C. though 12. We wont start the meeting _our teacher arrives. (2010年天津市 )
13、 A. though B. until C. while D. or,B,B,13. He didnt tell me anything _ he left. （2007年山东青岛） A. until B. before C. after D. since 14. I will never forget that terrible accident_ it happened so long ago. (2007年江苏扬州) A. only if B. even though C. only when D. ever since 15. _ they are twin brothers, the
14、y dont look like each other. （2010江苏省宿迁市 ） A.ThoughB. Since C. However D. When,A,B,A,16. What do you think of her dress?I think it still looks quite fashionable on her _ it is a style of many years ago. (2009年扬州市) A.thoughB. or C. so D. because,A,1. We went skating in the afternoon before / when the
15、 party started. 2. Until / After dinner, we joined a group of friends and we all went to the square. 3. While / When they were watching TV, we listened to music and sang traditional songs. 4. As soon as / after it was 12 oclock, we all shouted “happy new year” very loudly. 5. We stayed in the square
16、 after / until one oclock.,1 Choose the correct words.,before,After,While,As soon as,until,6. While / When the party was over, we walked back to our hotel. 7. As soon as / While it is January 2nd, I forget my New Years resolutions. 8. My mother always cooks a wonderful meal until / when its a public
