过去进行时过去进行时 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。 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：Hefellasleepwhenhewasreading.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：Iwaswonderingifyoucouldgivemealift.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：Theywerealwaysquarrelling.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：Hewasfriendly.他很友好。(指过去长期如此) Hewasbeingfriendly.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，、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。而过去进行时却表示动作在持续或未完成。 比较：Shewrotealettertoherfriendlastnight.她昨晚给朋友写了封信。 (信写完了) Shewaswritingalettertoherfriendlastnight.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、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。过去进行时却表示动作反复地进行。 如：Shewavedtome.她朝我挥了挥手。Shewaswavingtome.她一直朝我挥手。 3、句中有句中有the whole morning, all day yesterday, from nine to ten last evening, when, while , at that time, 之类的之类的短语短语一般过去进行时。一般过去进行时。过去进行过去进行时可以用来代替一般过去时，表示更为偶然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而非预定的动作 IwastalkingtoTomtheotherday 那天我跟汤姆聊天来着。 典型的例子1)Mary_adresswhenshecutherfinger.A.madeB.ismakingC.wasmakingD.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。 when， as while 的区别的区别一、when可以和延续性动词连用，也可以和短暂性动词连用；而while和as只能和延续性动词连用。 Why do you want a new job when youve got such a good one already？（get为短暂性动词）Sorry，I was out when you called me（call为短暂性动词）Strike while the iron is hot（is为延续性动词，表示一种持续的状态） The students took notes as they listened. （listen为延续性动词）二、when从句的谓语动词可以在主句谓语动作之前、之后或同时发生；while和as从句的谓语动作必须是和主句谓语动作同时发生。 1从句动作在主句动作前发生，只用 when。When he had finished his homework，he took a short rest（finished先发生）When I got to the airport，the guests had left（got to后发生）。 2从句动作和主句动作同时发生，且从句动作为延续性动词时，when，while，as都可使用。 When While As we were dancing，a stranger came in（dance为延续性动词）When While As she was making a phone call，I was writing a letter（make为延续性动词）3当主句、从句动作同时进行，从句动作的时间概念淡化，而主要表示主句动作发生的背景或条件时，只能用 as。这时，as常表示“随着”；“一边，一边” As the time went on，the weather got worse（as表示“随着”之意） The atmosphere(air) gets thinner and thinner as the height increases随着高度的增加，大气越来越稀薄。 As years go by，China is getting stronger and richer随着时间一年一年过去，中国变得越来越富强了。 The little girls sang as they went小姑娘们一边走，一边唱。 The sad mother sat on the roadside，shouting as she was crying伤心的妈妈坐在路边，边哭边叫。 4在将来时从句中，常用when，且从句须用一般时代替将来时。 You shall borrow the book when I have finished reading itWhen the manager comes here for a visit next week，Ill talk with him about thisExercises Exercises 1.He _ (not work) at that time.2.When the teacher _ (come) in, they _ (talk) loudly.3.What _ you _ (read) last night?wasnt workingcamewere talkingwere readingdid read4.His mother _ (return) while he _ (do) his homework.5.My father _ (watch) TV while my mother _ (cook).returnedwas doingwas watchingwas cooking用动词的适当形式填空用动词的适当形式填空(一般现在时、过去一般现在时、过去时、将来时、现在进行时、过去进行时）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 doingis helpingmakeswas readingis rainingare getting7.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 visitare playingwere doingDo likeDid have12. _ 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 studyingis singingisnt workingare having The children _(play) football at four yesterday afternoon. The baby _ (sleep) when the mother came back.was sleepingwere playing完成下列句子完成下列句子1）The Barber _(在给我理在给我理发）发）at this time yesterday.was cutting my hair 2) They _ (在买礼物）在买礼物）when the UFO arrived.3）The boys and girls_(在唱歌）在唱歌） last night.4)You _（在打篮球）在打篮球）yesterday afternoon, werent you?5) What _ To_(在做什么）在做什么）at noon yesterday?were buying giftswere singingwere playing basketball wasdoing5.MybrothercameintothebedroomwhileI_(dance).6._he_(lie)onthegroundatnineyesterdayevening?7.What_Jim_(write)whentheteachercamein?8.TheReads_(nothave)lunchwhenIgottotheirhouse.9.MikeandI_(play)basketballatthattimeyesterdayafternoon. 按要求转换下列句型。 1.WewerehavingaPEclassatfouryesterdayafternoon.（改为否定句） We_aPEclassatfouryesterdayafternoon.2.Katewasreviewingherlessonsateightlastnight.（改为一般疑问句，并做肯、否定回答） _Kate_herlessonsateightlastnight? _,she_._,she_.3.Heraninthepark.（用atthistimeyesterday改写） He_intheparkatthistimeyesterday.4.Theywereplayingcomputergamesatninelastnight.（对划线部分提问） _they_atninelastnight?5.Iwasreadinganovelatthreeyesterdayafternoon.（对划线部分提问） _you_atthreeyesterdayafternoon?