过去进行时讲解课件(42张ppt).ppt

过去进行时,基本概念：过去进行时表示在过去某一时刻或某一段时间内进行或发生的动作。,结构,现在分词的构成 1) 一般动词在词尾加- ing, 读i,如go - going。 2) 以不发音字母e结尾的动词,先去掉e,再加-ing。 come - coming make-making write - writing,3) 以重读闭音节结尾的动词,如果末尾以一个辅音字母结尾,应先双写这个字母,再加ing, x和w结尾的除外。 如: get - getting swim - swimming show - showing,4) 以字母y结尾的单词,直接加ing。 如carrying、playing、studying。 5) 以字母ie结尾的动词,变ie为y,再加ing。 diedying lielying,用法,1. 过去进行时的基本用法主要表示过去某一时间正在进行的动作。 如： He fell asleep when he was reading. 他看书时睡着了。,2. 过去进行时表示现在主要是为了使语气委婉、客气。 如： I was wondering if you could give me a lift. 我不知你能否让我搭一下车 【注】一般过去时也有类似用法，但比较而言，用过去进行时显得更客气，更不肯定。能否让我搭一下车。,3. 过去进行时表示感情色彩与现在进行时相似，过去进行时也可表示满意、称赞、惊讶、厌恶等感情色彩，也通常与 always, forever, continually等副词连用。 如： They were always quarrelling. 他们老是吵架。,4. 动词be的过去进行时也可表示过去一时的表现或暂时的状态。 比较： He was friendly. 他很友好。 (指过去长期如此) He was being friendly. 他当时显得很友好。(指当时一时的表现),一般过去时与过去进行时的区别,1、一般过时往往表示某一动作已经完成，而过去进行时却表示动作在持续或未完成。 比较： She wrote a letter to her friend last night. 她昨晚给朋友写了封信。 (信写完了) She was writing a letter to her friend last night. 她昨晚一直在给朋友写信。 (信不一定写完),2、一般过去时表示只做一次动作，而过去进行时却表示动作反复地进行。 如： She waved to me. 她朝我挥了挥手。 She was waving to me. 她一直朝我挥手。,3、句中有a moment ago，this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while , at that time, just now 之类的短语一般用一般过去时。过去进行时可以用来代替一般过去时，表示更为偶然而非预定的动作I was talking to Tom the other day 那天我跟汤姆聊天来着。,典型的例子,1) Mary _ a dress when she cut her finger. A. made B. is making C. was making D. makes 答案C. 割伤手指是已发生的事情，应用过去时。同 时，when表时间的同时性，“玛丽在做衣服时“提供事情发生的背景，因此用过去进行时。,2) As she _ the newspaper, Granny _ asleep. read； was falling B. was reading； fell C. was reading； was falling D. read；fell 答案B.句中的as = when, while，意为“当之时“。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，另一个短动作发生。句意为 “在她看报纸时，奶奶睡着了。“句中的 fell (fall的过去时)，是系动词，后跟形容词，如：fall sick。,以when, while及as引导的时间状语从句 延续性动词：指动作可以延续一段时间，而不是瞬间结束。 如：work、study、drink、eat等。 非延续性动词：指动作极为短暂，瞬间结束如：start、begin、jump、knock等。,1. 当从句中的谓语动词是 持续性的动作时, 用while, when或as 引导。,Eg：I was drawing the picture when my friend came. Jone was talking with his classmates when teacher called him.,当从句中的谓语动词表示瞬间动作时,不可用while。 Eg : He was on the point of leaving when someone knocked at the door. 如果谈论两个长动作,最常用的是while。,Eg:While John was sitting biting his nails,I was working out a plan to get us home.,如果表示两个短动作或事件 同时发生,常用as或just as, 也可用when。,Just as he caught the ball, there was a tearing sound 当他抓住球的时候,有一种撕裂的声音。,6. Tom burnt his hand when he _ the dinner. A. cooked B. was cooking C. has been cooking D. had cooked,注意:在上述所列的动词中,个别的也能用进行时态,但其词义发生了转变. I hear the girl singing. We are hearing a talk on the history of America. I have a computer. I am having lunch.,过去进行时与一般过去时的区别,过去进行时表示的动作在过去某个时间正在进行,可能完成,也可能没完成。,一般过去时表示动作或状态已经结束。,Mary _ a letter last night. 玛丽昨晚整晚都在写信。 Mary _ a letter last night. 玛丽昨晚写了封信。,was writing,wrote,Exercises,1.He _ (not work) at that time. 2.When the teacher _ (come) in, they _ (talk) loudly. 3.What _ you _ (read) last night?,wasnt working,came,were talking,were reading,did read,4.His mother _ (return) while he _ (do) his homework. 5.My father _ (watch) TV while my mother _ (cook).,returned,was doing,was watching,was cooking,用动词的适当形式填空(一般现在时、过去时、将来时、现在进行时、过去进行时） 1. She _ (do) her homework this time yesterday. 2. The teacher _ (help) his students with their lessons now. 3. He _ (make) progress every day. 4. She _ (read) a story-book at seven yesterday evening. 5. It _ (rain) hard now. 6. The students _ (get) ready for the picnic these days.,was doing,is helping,makes,was reading,is raining,are getting,7.They _ (visit) the science museum next Monday. 8.Look, they _ (play) video games. 9.We _ (do) some cleaning at that time. 10._ the students _ (like) learning English? 11._ you _ (have) a good time last Sunday?,will visit,are playing,were doing,Do,like,Did,have,12. _ he _ (study) English from 7 to 9 last night? 13. Listen, she _ (sing). 14. He _ (not work) in the factory these days. 15. Its eight oclock. The students _ (have) an English lesson.,Was,studying,is singing,isnt working,are having,单项选择题 1. My brother _ while he _ his bicycle and hurt himself. A. fell, was riding B. fell, were riding C. had fallen, rode D. had fallen, was riding 2. Tom _ into the house when no one _. A. slipped, was looking B. had slipped, looked C. slipped, had looked D. was slipping, looked,3.The last time I _ Jane she _ cotton in the fields. A. had seen, was picking B. saw, picked C. had seen, picked D. saw, was picking 4.I dont think Jim saw me; he _ into space. A. just stared B. was just staring C. has just stared D. had just stared,5.I first met Lisa three years ago. She _ at a radio shop at the time. A. has worked B. was working C. had been working D. had worked 6.-Hey, look where you are going! -Oh, Im terribly sorry._. A. Im not noticing B. I wasnt noticing C. I havent noticed D. I didnt notice,7. The reporter said that the UFO _ east to west when he saw it. A. was traveling B. traveled C. had been traveling D. was to travel 8. I _ my breakfast when the morning post came. A. had B. had been having C. have been having D. was having,填入以下单词的正确形式 1. It was warm, so I _off my coat (take). 2. John_ (take) a photograph of me while I _(not/look). 3. Jane_(wait) for me when I _(arrive). 4.When I was young, I_(want) to be a bus driver.,5. My brother came into the bedroom while I _ (dance). 6. _he _ (lie) on the ground at nine yesterday evening? 7. What _ Jim _ (write) when the teacher came in? 8. The Reads _ (not have) lunch when I got to their house. 9. Mike and I _(play) basketball at that time yesterday afternoon.,按要求转换下列句型。 1. We were having a PE class at four yesterday afternoon.（改为否定句） We _ _ a PE class at four yesterday afternoon. 2. Kate was reviewing her lessons at eight last night.（改为一般疑问句，并做肯、否定回答） _ Kate _her lessons at eight last night? _ , she _. _ , she _ .,3. He ran in the park.（用at this time yesterday改写） He _ _in the park at this time yesterday. 4. They were playing computer games at nine last night.（对划线部分提问） _ _ they _ at nine last night? 5. I was reading a novel at three yesterday afternoon.（对划线部分提问） _ _ you _ at three yesterday afternoon?,以when, while及as引导的时间状语从句 延续性动词：指动作可以延续一段时间，而不是瞬间结束。 如：work、study、drink、eat等。 非延续性动词：指动作极为短暂，瞬间结束如：start、begin、jump、knock等。,1. 当从句中的谓语动词是 持续性的动作时, 用while, when或as 引导。,Eg：I was drawing the picture when my friend came. Jone was talking with his classmates when teacher called him.,当从句中的谓语动词表示瞬间动作时,不可用while。 Eg : He was on t