人教版八年级下册-Unit-5-Section-A-Grammar-Focus-4c-一等奖优秀课件.ppt

1、Unit 5What were you doing when the rainstorm came?To learn the past continuous tense Let the students learn and tell thedifference between while and whenRevisionFill in the blanks with“be”.1.I _ 16 years old this year.2.I _ 15 years old last year.3.How _ the weather today?4.How _ the weather yesterd

2、ay?5.They _ good friends.6.They _ good friends three years ago.amwasiswasarewere growgrewmeanmeanttelltoldtaketookrunranfallfellhearheardbuybought一般式一般式-过去式过去式flyflewthink thoughtgetgotringrangbecome becamemake madeeatatecutcutgowentleave leftsleep sleptshopshoppedWhat were you doing at eight last n

3、ight?I was taking a shower.What was she doing at the time of the rainstorm?She was doing her homework.Grammar FocusWhat was he doing when the rainstorm came?He was reading in the library when the rainstorm came.What was Ben doing when it began to rain heavily?When it began to rain heavily,Ben was he

4、lping his mom make dinner.What was Jenny doing while Linda was sleeping?While Linda was sleeping,Jenny was helping Mary with her homework.1.以以when和和while引导的时间状语从句引导的时间状语从句1)延续性动词和非延续性动词延续性动词和非延续性动词 延续性动词延续性动词指动作可以延续一段时间指动作可以延续一段时间,而不是而不是 瞬间结束。瞬间结束。如如:work、study、drink、eat等。等。非延续性动词非延续性动词指动作极为短暂，瞬间结束。

5、指动作极为短暂，瞬间结束。如如:start、begin、hit、jump、knock等。等。2)在本单元中在本单元中,出现了以出现了以when和和while引导的引导的 时间状语从句。时间状语从句。when表示表示“当当的时候的时候”。从句中既可用延续。从句中既可用延续性动词性动词,又可用非延续性动词又可用非延续性动词,这些动词既可以这些动词既可以表示动作表示动作,又可表示状态。又可表示状态。从句中的动作既可以从句中的动作既可以和主句的动作同时发生和主句的动作同时发生,又可在主句的动作之又可在主句的动作之前或之后发生。前或之后发生。e.g.Mary was having dinner when

6、 I saw her.The boy was still sleeping when his mother got home yesterday morning.while表示表示“在在的时候的时候”、“在在期间期间”。它强调主句的动作与从句的动作同时发生或它强调主句的动作与从句的动作同时发生或 主句的动作发生在从句的动作过程中。主句的动作发生在从句的动作过程中。While 从句中必须是表示动作或状态的延续性动词。从句中必须是表示动作或状态的延续性动词。e.g.The weather was fine while we were in Beijing.She called while I wa

7、s out.如果主句的动作在从句的动作过程中发生，从如果主句的动作在从句的动作过程中发生，从句常用进行时。句常用进行时。e.g.While we were swimming someone stole our clothes.Dont talk so loud while others are working.总结总结 1)when可指时间点可指时间点,又可指时间段又可指时间段,从句中从句中 可用可用延续性动词延续性动词,也可用也可用非延续性动词。非延续性动词。2)while总是指一个时间段总是指一个时间段,从句中从句中必须用延必须用延 续性动词续性动词。1._ Jennifer was re

8、ading a magazine,her sister was listening to the pop music.A.WhileB.When C.What time2.I was trying to draw a cat on the board _ the teacher came in.A.whileB.when C.what time3.My best friend visited my house while I _ dinner in the kitchen.A.cooked B.cooking C.was cooking练一练练一练A B C 4.When _ the car

9、_?In 1885 A.did;invent B.was;invented C.does;invent D.is;invented5.Our teacher wants us to be _ when we talk with the foreigners.A.comfortable B.unusual C.grateful D.confident B D 6.Dick gave me a note while I _ in the library.I guess he made it to say“sorry”to you.A.am reading B.was reading C.reads

10、 D.will read B 2.过去进行时过去进行时1.1.概念概念:表示过去某一时刻或某表示过去某一时刻或某段时间内段时间内 正进行的动作。正进行的动作。2.构成构成:was/were+动词现在分词动词现在分词3.用法用法:a:表示某一时刻正进行的行为表示某一时刻正进行的行为,与特定的与特定的 过去时间状语连用过去时间状语连用,常见的时间状语有常见的时间状语有:at 8 last night,at this time，at that time,at that moment 等。等。e.g.What were you doing at 10 yesterday morning?I was w

11、riting a letter to my father at that moment.b:表示过去某段时间内正进行的动作。表示过去某段时间内正进行的动作。e.g.We were building a house last winter.They were waiting for you yesterday.否定句和疑问句：否定句和疑问句：e.g.We were not sleeping at home.Was he feeling well?3.现在分词的构成现在分词的构成 注意：注意：（1）以元音字母加以元音字母加e结尾结尾,或以或以e结尾结尾,且且e发音的动词发音的动词,直接加直接加-i

12、ng。see-seeing bebeing（2）以）以c结尾的动词结尾的动词，变，变c为为ck，再加，再加-ing。picnicpicnicking traffictrafficking4.使用进行时态的注意事项使用进行时态的注意事项1)一些动词一些动词,如如see、hear、love、like、know、remember、understand、have等表示感情、等表示感情、知觉和状态的词知觉和状态的词,一般不用于进行时态。一般不用于进行时态。2)在在there和和here引起的句子中引起的句子中,常用一般现在常用一般现在 时代替现在进行时。时代替现在进行时。e.g.Here comes t

13、he bus.There goes the bell.5.过去进行时和一般过去时的区别过去进行时和一般过去时的区别1)过去进行时过去进行时表示表示过去正在进行的动作过去正在进行的动作,而一般过去时而一般过去时则表示则表示一个完整的动作。一个完整的动作。e.g.They were writing letters to their friends last night.昨晚他们在写信给他们的朋友。昨晚他们在写信给他们的朋友。(没有说明信是否写完没有说明信是否写完)They wrote letters to their friends last night.他们昨晚写了信给他们的朋友。他们昨晚写了信

14、给他们的朋友。(表达了他表达了他 们已写好的意思们已写好的意思,整个写的过程已完成整个写的过程已完成)2)当当动作延续较长时间时动作延续较长时间时或或表示厌烦、赞美等表示厌烦、赞美等感情色彩时感情色彩时,常用常用过去进行时过去进行时表示。表示。e.g.He was thinking more of others than of himself.他考虑别人的比考虑自己的多。他考虑别人的比考虑自己的多。(表示说话者赞扬的口气表示说话者赞扬的口气)The boy was always making trouble then.那时那时,他总是惹麻烦。他总是惹麻烦。(表示说话者厌烦的口气表示说话者厌烦的

15、口气)过去进行时过去进行时含义含义:表示表示过去某个时刻过去某个时刻 正在进行正在进行的动作。的动作。结构：结构：was/were+doinge.g.I was having an English class at this time yesterday.现在进行时现在进行时含义含义:表示表示现在现在正在正在 进行进行的动作。的动作。结构：结构：is/am/are+doinge.g.I am having an English class now.6.4a Look at the table and writesentences with both while and when.John Ma

16、ry take photosbuy a drinkplay the pianoleave the houseclean his roomturn on the radioshoptake the car to the car washe.g.While John was taking photos,Mary bought a drink.John was taking photos when Mary bought a drink.While John was playing the piano,Mary left the house.John was playing the piano wh

17、en Mary left the house.While John was shopping,Mary took the car to the car wash.John was shopping when Mary took the car to the car wash.While John was cleaning his room,Mary turned on the radio.John was cleaning his room when Mary turned on the radio.4b Fill in the blanks with was,were,when or whi

18、le.At 7:00 a.m.,I woke up._I _making my breakfast,my brother_ listening to the radio._I was eating,the radio news talked about a car accident near our home.My brother and I went out right away to have alook._we got to the place of the accident,the car _ in bad shape from hitting a tree.But luckily,t

19、he driver _fine.The roads_ icy because of the heavy snow from the night before.While waswasWhile When was was were 4c What were you doing at these times last Sunday?Fill in the chart.Then ask your partner.A:What were you doing at nine oclock last Sunday morning?B:I was sleeping.How about you?A:I was

20、 doing my homework.B:Youre kidding!Group work YouStudent1Student29:00 amrunreadhave breakfast11:30 amwashswimwalk4:00 pmread books9:00 pmwatch TVWhat were you doing at last Sunday?9:00 am11:00 am8:00 pm10:00 pmA:What were you doing at nine oclock last Sunday?B:I was running.How about you?A:I was rea

21、ding.B:Youre kidding!kid v.欺骗欺骗;戏弄戏弄;开开玩笑玩笑1.What _(be)you _(do)when he arrived?2.Jim _(sleep)when I came in.3.They _(watch)TV at 8:00 yesterday evening.4.Now he _(read)and _ (write).were doing was sleeping were watching is readingwriting一、用所给词的正确形式填空一、用所给词的正确形式填空5.Mother _(wash)clothes when I _(get

22、)home from school yesterday afternoon.6.Look,my sister _(be)there in the barbers shop.The barber _ (cut)her hair.7.-When _ you _(see)the accident?-I _(see)it fifteen minutes ago.was washinggotisis cuttingdidseesaw二、翻译句子二、翻译句子1.上课铃响时上课铃响时,你在干什么你在干什么?What _ you _ when the class bell rang?2.当我妈妈进来时我正在看

23、书。当我妈妈进来时我正在看书。I _ _ when my mother came in.3.昨天晚上十点钟她正在做饭。昨天晚上十点钟她正在做饭。She _ _ at ten oclock _ _.weredoingwas readingwas cookinglast night4.当飞机起飞的时候当飞机起飞的时候,天正下着大雪。天正下着大雪。It _heavily when the plane _.5.瞧瞧,孩子们正在追逐一只小猫。孩子们正在追逐一只小猫。Look!The children _ a small cat.took off was snowingare chasing after6

24、.我女儿正在写信时我女儿正在写信时,其他的孩子都在外面其他的孩子都在外面 玩耍。玩耍。My daughter was writing a letter _ the other children _ outside.were playingwhile1.昨天早上昨天早上9点钟你在干什么点钟你在干什么?2.不明飞行物起飞时，小明正在骑自行车。不明飞行物起飞时，小明正在骑自行车。3.那时，他们正在做家庭作业。那时，他们正在做家庭作业。What were you doing at 9 oclock yesterday morning?Xiao Ming was riding his bike when

25、 theUFO took off.They were doing their homework at that time.三、三、汉译英汉译英4.今早我给你打电话的时候今早我给你打电话的时候,你正在干什么？你正在干什么？5.当他正睡觉的时候他梦见了当他正睡觉的时候他梦见了UFO。6.当李雷在吃早饭时当李雷在吃早饭时,吉姆进来了。吉姆进来了。What were you doing when I called you up this morning?While Li Lei was having breakfast,Jim came in.While he was sleeping,he dreamed about UFO.Homework What were you doing at this time last Sunday?Practice more with your classmates.