《Language in use》Accidents PPT课件范例.pptx
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1、PPT模板:素材:PPT背景:图表:PPT下载:教程: 资料下载:范文下载:试卷下载:教案下载:PPT论坛: PPT课件:语文课件:数学课件:英语课件:美术课件:科学课件:物理课件:化学课件:生物课件:地理课件:历史课件:What were they doing when it began to rain?They were playing computer games when it began to rain.They were playing chess when it began to rain.They were playing football when it began to r
2、ain.While Jake was sleeping, what did While Jake was sleeping, what did his brother do?his brother do?He played basketball.While Jake was sleeping, his brother was playing basketball.While they were dancing, the telephone rang.When the telephone rang, they were dancing.While they were dancing, what
3、While they were dancing, what happened?happened?PPT模板:素材:PPT背景:图表:PPT下载:教程: 资料下载:范文下载:试卷下载:教案下载:PPT论坛: PPT课件:语文课件:数学课件:英语课件:美术课件:科学课件:物理课件:化学课件:生物课件:地理课件:历史课件:He was singing when the baby started to cry.While he was singing, the baby started to cry.While he was walking, a taxi came.He was walking wh
4、en a taxi came.过去进行时(过去进行时(2 2)when和和while的区别的区别 (一一) when,while都有都有“当当时候时候”的意的意思。思。when既可表示某一点时间,也可以表示既可表示某一点时间,也可以表示某一段时间某一段时间。 在在when引导的时间状语从句中,其谓语动引导的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的,词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其可与主句中的谓语动词同时发生,也可在其后发生。如:后发生。如: I was just reading a book when she came into
5、my room. 她走进我房间时,我正在看书。她走进我房间时,我正在看书。 Were you writing when the teacher came in? 老师进来的时候,你在写信吗?老师进来的时候,你在写信吗? When he was a child, he was always trying out new ideas. 他小时候就常常试验一些新的设想。他小时候就常常试验一些新的设想。 (二二) while只能表示某一段时间,不能只能表示某一段时间,不能表示某一点时间。在表示某一点时间。在while引导的时间状引导的时间状语从句中,其谓语动词只能是延续性的,语从句中,其谓语动词只能是
6、延续性的,而且也只能与主句中的谓语动词同时发生而且也只能与主句中的谓语动词同时发生或存在或存在。如:。如: While Jim was mending his bike, Lin Tao came to see him. 正当吉姆修自行车时,林涛来看他。正当吉姆修自行车时,林涛来看他。 You cant do your homework while youre watching TV. 你不能一边看电视一边做家庭作业。你不能一边看电视一边做家庭作业。 (三三) when和和while的区别还在于的区别还在于: while引导引导的时间状语从句多用进行时态,而的时间状语从句多用进行时态,而whe
7、n引导引导的时间状语从句多用一般时态的时间状语从句多用一般时态。如:。如: While they were talking, the bell rang. 他们谈话的时候,上课铃响了。他们谈话的时候,上课铃响了。 I was doing my homework when my mother came back home yesterday evening. 昨天晚上妈妈回家的时候,我正在做家庭昨天晚上妈妈回家的时候,我正在做家庭作。作。链接链接 as 所表示的动作与主句同时发生,具所表示的动作与主句同时发生,具有延续的含义,一般与延续行动词连用。有延续的含义,一般与延续行动词连用。如:如: A
8、s the doctors were checking him, the pain got worse. 医生给他做检查时,疼痛加剧了。医生给他做检查时,疼痛加剧了。 I was coming in as he was going out. 他进来的时候我正出去。他进来的时候我正出去。注注 意意 (1) 如主句谓语动词表示的是短暂动作,从如主句谓语动词表示的是短暂动作,从句时间状语指一段时间,句时间状语指一段时间,when, while, as 三三者可通用者可通用。 Peter came in while /as I was watching TV. 当当Peter进来的时候我正在看电视。进
9、来的时候我正在看电视。 I was watching TV when Peter came in. 当当Peter进来时我正在看电视。进来时我正在看电视。 He entered the room when / as / while the meeting was going on. 正当开会的时候他走进了房间。正当开会的时候他走进了房间。 (2) as 和和 while可用来指一段时间,但可用来指一段时间,但 as 强强调主句与从句表示的动作同时发生,调主句与从句表示的动作同时发生,while强调强调主句表示的动作是在主句表示的动作是在 while 从句的动作延续中从句的动作延续中发生发生。
10、As my mother sang those old songs, tears ran down her cheeks. 当我妈妈唱起那些老歌时,眼泪顺着她的当我妈妈唱起那些老歌时,眼泪顺着她的脸颊流了下来。脸颊流了下来。 I came in while he was reading an interesting book in his room. 我进来时他正在房间里读一本有趣的书。我进来时他正在房间里读一本有趣的书。1. I _ (watch) TV when she _ (call).2. When the phone _ (ring), she _ (write) a letter.
11、3. While we _ (have) a picnic, it _ (start) to rain.4. While John _ (sleep) last night, someone _ (steal) his car. was watchingcalledrangwas writingwere havingstartedwas sleepingstole5. While we _ (wait) for the bus, a girl _ (run) up to us. 6. I _ (telephone) a friend when Bob _ (come) in. 7. Jim _
12、 (jump) on the bus as it _ (move) away. 8. We _ (test) the new machine when the electricity _ (go) off.were waitingwas runningwas phoningcamewas jumpingwas movingwere testingwent9. While mother _ (make) the bed, the door bell _ (ring). 10. As I _ (walk) in the park, it _ (begin) to rain. 11. It was
13、quite late at night. George _ (read) and Amy _ (play) her needle when they _ (hear) a knock at the door.was making rangwas walkingbeganwas readingwas playingheard( ) 1. Mary _ a dress when she cut her finger. A. made B. is making C. was making D. makes 解析:割伤手指是已发生的事情,应用过去解析:割伤手指是已发生的事情,应用过去时。同时,时。同时
14、,when表时间的同时性,表时间的同时性,“玛丽玛丽在做衣服时在做衣服时”提供事情发生的背景,因此用提供事情发生的背景,因此用过去进行时。过去进行时。C( ) 2. While she _ the newspaper, Granny _ asleep. A. read; was falling B. was reading; fell C. was reading; was falling D. read; fell 解析:句中的解析:句中的while 意为意为“当当之时之时”。描述一件事。描述一件事发生的背景时,用过去进行;一个长动作发生的时候,发生的背景时,用过去进行;一个长动作发生的时候
15、,另一个短动作发生。句意为另一个短动作发生。句意为 “在她看报纸时,奶奶睡着在她看报纸时,奶奶睡着了了” 。句中的。句中的 fell (fall的过去时的过去时)是系动词,后跟形容词,是系动词,后跟形容词,如如fall sick。 过去进行时的基本用法过去进行时的基本用法: 表示过去某个时刻表示过去某个时刻或时间正在进行过持续进行的动作或时间正在进行过持续进行的动作, 句中往往需要有时句中往往需要有时间状语来表示这一特定的时间。间状语来表示这一特定的时间。 What were they doing just now? 他们刚才在干什么他们刚才在干什么?B( ) 1. My brother ca
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