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1、Unit 8 Natural disasters 第 3 课时 Grammar八年级英语上册同步精品讲义（牛津译林版）知识精讲过去进行时的概念和用法: （一）定义： 过去进行时，是表示过去某个具体时刻正在进行的事情或动作。（二） 结构：was/were +doing (现在分词） 否定式：was / were not + doing was not = wasnt were not = werent 疑问句：将 was / were 调到主语前，结构为：Was/Were+主语+verb-ing? 回答：Yes, 主语+was/were. No, 主语+ was not/wasnt. were
2、not/werent.（三）用法1. 常用的时间状语this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while例如：【例题精讲】例1. We were watching TV from seven to nine last night.昨天晚上七点到九点的时候我们在看电视。例2. It was raining when they left the station.他们离开车站的时候天正在下雨。例3. When I got to the top of the moun
3、tain, the sun was shining.当我到达山顶的时候，阳光灿烂。2. 过去进行时可以表示在过去某个时间点发生的事情。时间点可以用介词短语、副词或从句来表示。【例题精讲】例1. What was she doing at nine oclock yesterday?昨天晚上九点她在做什么？ (介词短语表示时间点)例2. When I saw him he was decorating his room.当我看见他的时候他正在装饰房间。 (when从句表示时间点)【知识梳理2】whilewhenas 与过去进行时1. when, while 和 as 这三个词都有“当时候”的意思
4、。【例题精讲】例1. There were fewer sandstorms when my grandparents were young. 我祖父母年轻时沙尘暴要少些。例2. While Mille was watching TV, her mum was sleeping.米莉在看电视时，妈妈在睡觉。例3. I saw a traffic accident as I was riding to school this morning.今天早晨我骑自行车时看到一起交通事故。2. when 和 as 既可以指某一点时间，也可以指某一段时间，其从句谓语动词表示的动作既可以是瞬间性的，也可以是延
5、续性的；while指一段时间，从句中的谓语动词必须是延续性的。即：指一段时间时when, while 和as都可用；指一点时间时，只能用when或as，不能用while。【例题精讲】例. 试比较：1. When/As he woke up, it was eight oclock.(对)2. While he woke up, it was eight oclock.（错）3. When/While/As I was waiting for a bus, I met her.（错）3.当 while , when 和 as 放在句首时，两个句子应用逗号隔开。【例题精讲】例1. When the
6、 teacher came in, we were talking.例2. While the pig was dancing, the rabbit was jumping.例3. As the two men were leaving, a message arrived.【巩固练习】1.用所给动词的适当形式填空 It was ten oclock on Sunday morning. The family were all in the garden. Mr King and Mrs King _(sit) under the tree, and they _(talk) and _(l
7、augh). Their son Jack _(read) an interesting book. Their daughter Wendy _ (play) with their dog. Everyone was happy.Keys: were sitting; were talking; laughing; was reading; was playing能力拓展1Kate, I called you at 8:00 yesterday evening, but nobody answered.Really? Im sorry. I _ English with my pen pal
8、 online.ApractiseBpractisedCam practisingDwas practising2While we _the crops, it suddenly poured with rain.Awere harvestingBharvestedCare harvestingDharvest3I didnt see you at the party yesterday.I _ for the final exam at that time.Aam preparingBpreparedCwas preparingDprepare4The boy was playing und
9、er the tree _ the accident happened.AwhenBsoCwhileDif5I called you yesterday afternoon, but there was no answer.Oh, I _ my bike in the garden.Afixed upBwas fixing upCfix upDis going to fix up6While my father _ the evening paper, he suddenly heard a cry.Awas looking throughBam looking throughChave lo
10、oked throughDlooked through7 I called you at eight but you didnt pick up. Sorry, I _ a showerAtookBtakingCtakeDwas taking8Mary, just now mom argued with dad.I didnt hear it. At that time, I _ the piano.ApracticeBare practicingCpracticedDwas practicing9 Why didnt you answer my call last night? I want
11、ed to borrow your notebook. Sorry. I _ at that time. I had a long day yesterday.AsleepBsleptCis sleepingDwas sleeping10What was Peter doing when it _ to rain heavily?He _ his homework .Abegins; was doingBbegins; is doingCbegan; was doingDbegan; did11Oh, dear! A power cut!Sorry, I didnt know you _ th
12、e washing machine.Aare usingBwere usingCuseDused12Tom fought with John just now.Sorry, I didnt notice them. I _ the vegetables into small pieces then.AcutBwill cutCwas cuttingDhave cut13Tom was washing the dishes in the kitchen _ Jack was watching TV in the room.AifBwhetherCasDwhile14Tom, what were
13、you doing at five yesterday afternoon?I _ my cousin with his homework.AhelpedBam helpingCwas helpingDhelp15I _ research on the Internet when my uncle came yesterday.Ais doingBdoesCdidDwas doing16The man _ in the forest when he saw something unusual.AworksBis workingCwill workDwas working17Jenny and
14、Jane were talking in the kitchen _ I was reading the newspaper.AwhileBbeforeCafterDwhen18 Betty, I didnt see you at the party. Where were you? I _ a report about pollution at home.AwroteBam writingCwriteDwas writing19Hi, Tony! I didnt see you at the party. Oh, I _ for a test.Awas studyingBam studyin
15、gCstudiedDwere studying20_? He was reading English.AWhat did Jim doBWhat was Jim doingCWhat does Jim doDWhat is Jim doing21I was at the cinema at 9:00 yesterday evening. What about you? I _TV at home.Aam watchingBwas watchingCwill watchDwatched22What _you _this time yesterday? I was reading a book.A
16、were, doingBwas, doingCis, doingDdid, do23When Mr. Li looked into the classroom, I _ a novel in my seat.AreadBwill readCam readingDwas reading24Were you at home at 9:00 last night? I rang your doorbell but nobody answered.Sorry, I _ at that time.Awatch TVBwatched TVChave watchedDwas watching TV25Jim
17、, what do you think of my idea?Sorry, I _ of something else.AthoughtBwas thinkingCthinkDhave thought26What do you think of my answer to the question?Sorry. Whats that? I _ about something else.AthoughtBhas thoughtCam thinkingDwas thinking27 Why didnt your best friend Lucy come to the party last nigh
18、t? Because she _ up the broken bikes for the poor kids at that time.AfixesBfixedCwas fixingDis fixing28I saw Ken in the meeting room. He _ Joe for the school magazine.AinterviewsBinterviewedChas interviewedDwas interviewing29The rainstorm came while Ann _ her purse in the classroom.Awas looking forB
19、looked forCis looking atDlooks at30My father _ his bike when I came home yesterday afternoon.ArepairsBwill repairCis repairingDwas repairing31I called you this morning, but nobody answered.Sorry, I _ the flowers in the garden.Awas wateringBwateredCwould waterDwater32Didnt you hear Dad call you?No, I
20、 didnt. I _ with Jack on the phone.Awas talkingBwould talkChave talkedDam talking33What _ you _ at this time yesterday?Adid; doBare; doingCwere; doingDdo; do34Did you see the man with glasses just now?Im sorry, but I _ a poem.AreadBwas readingCam readingDwill read35The students _ an exciting match i
21、n the football field when it suddenly started to rain. So they had to find a place to hide from the rain.AwatchedBare watchingCwas watchingDwere watching36 What were you doing at this time yesterday? I _ a movie named Hi Mum directed by Jia Ling.AseeBam seeingCwill seeDwas seeing37How did the accide
22、nt happen?The driver _ an e-book on his mobile phone while driving.Awas readingBreadCreadsDis reading38Students in Grade Eight _ a math exam at this time yesterday.AtakeBtookCare takingDwere taking39Ella, I called you this morning, but nobody answered the phone.Im sorry. I _ tennis with my friends then.AplayedBplayCam playingDwas playing40Mary_ for the bus at six yesterday evening.AwaitsBwaitedCis waitingDwas waiting