译林版初中英语八年级上册 Unit 8 Grammar 课件

Safe and soundLearn the differences between 'when', 'while', and 'as' and practice their correct usageBy the end of this lesson, students will be able to:learn the use of the past continuous tenseuse the past continuous tense to write about an emergency or a natural disaster that happened in your hometown, or one you heard about➷➷➷➷➷➷➷➷➷➷A Past continuous tense Past continuous tense Listen to the conversation below and fill in the blanks.were goingwas rainingwas ridingWe form the past continuous tense like this: _________ + v-ing.was/were过去进行时表示过去某个时刻或某一时段正在进行的动作。① I was watching TV at eight last night. 昨晚八点我正在看电视。② He was waiting for the bus at this time yesterday. 昨天这个时候他在等公交车。1. 定义过去进行时常与过去进行时连用的时间状语有： at this time yesterday / at 9:00 last night / the whole morning 等。We weren't watching TV at that time. 那时我们没有看电视。She was eating breakfast at 6 am yesterday. 她昨天早上6点在吃早餐。否定句: 肯定句: 2. 结构主语+ was/were + V-ing +其他.主语 + wasn't/weren't+ V-ing+ 其他.- Were you playing basketball at that time? - Yes, we were. / No, we weren't. —那时候你们在打篮球吗？—是的，我们是。/不，我们没有。一般疑问句: 肯定回答：Yes, 否定回答：No, + 主语Was/Were + V-ing+其他?主语 + was/ were.主语+ wasn't/weren't.特殊疑问句： What were you doing at 7:00 last night? + 主语疑问词+V-ing+ was/were+其他?你昨晚7点在做什么？I was having breakfast at 7:00 am yesterday.7:00 am yesterday* 过去进行时表示过去某一时刻正在进行的动作。时 间点可以用介词短语、副词或从句来表示，也可由 上下语境暗示。3. 用法2. 过去进行时表示过去某阶段一直在进行的动作。from 1982 to 1998From 1982 to 1998, she was teaching at Yale. 3. 过去进行时常出现在讲故事的情境中。① Alice was sitting with her sister by the river and her sister was reading a book.② While she was falling, she was thinking about her cat, Dinah.4. 短暂性动词，如decide、stop等。有些动词通常不用于进行时，主要有：1. 表示心理状态、情感的动词，如love、hate、like、know等。2. 部分连系动词，如seem、appear等。3. 感官动词，如see、hear、feel、smell、sound、taste 等。Look at the pictures. Where were these people at 3 o'clock yesterday afternoon? And what were they doing? Write two sentences for each picture.1. Rachel was at home. She was watching TV.2. Jack and Kate _______________________ They _______________________________ were at the cinema. were watching a film.3. Tom _____________________________________4. _________________________________________ _________________________________________5. _________________________________________ _________________________________________was in his car. He was driving.Tracey was at the station. She was waiting for a train.Mr and Mrs Hall were in the park. They were walking.Past continuous tense Read the conversation again and pay attention to the circled words.当……时Using when, while and as when, while和as的相同点 when、while 和 as 这三个词均有“当……时候”的意思。① There were already many people in the meeting room when he arrived.② While Millie was watching TV, her mum was sleeping.他到场时会议室已有很多人。米莉在看电视时她妈妈在睡觉。③ I saw a traffic accident as l was riding to school this morning.今天早晨我骑车上学时看见一起交通事故。when, while和as的不同点1. when和as引导的时间状语从句中的谓语动词既可以是延续性的，也可以是瞬间性的；while引导的时间状语从句中的谓语动词只能是延续性的。① It was raining hard when/as we arrived.我们到达时正下着大雨。② The phone rang while I was sleeping.​在我睡觉的时候​​，电话响了。延续性动词：表示可以持续一段时间的动作或状态。例如: work(工作)，study(学习)，read(阅读)等。瞬间性动词：表示在极短时间内完成的动作，无法延续。例如：arrive(到达)，die(死亡)，open(打开)等。① When/As he woke up, it was eight o'clock.② While he woke up, it was eight o'clock.③ When/While/As I was waiting for a bus, I met her.判断正误。( )( )( )√×√2. 当某个动作正在进行时，又发生了另一动作，我们常用过去进行时表示正在进行的长动作，用一般过去时表示短动作。 常用结构：一般过去时 +when/while/as+过去进行时。① It began to rain heavily when/while/as we were having dinner.② When/While/As we were reading, a stranger came in.我们在吃晚饭时,开始下起大雨。当我们正在看书时,一个陌生人走了进来。这种情况下，连词 when、while、as 既可位于句中，也可位于句首。3. 谈论两个同时进行的长动作(事件、情况)，常用“过去进行时+ while+过去进行时”结构。① They were rowing boats while we were climbing the hill.② While she was making a phone call, l was writing an email.当我们在爬山时,他们在划船。当她在打电话时,我正在写一封电子邮件。while可位于句首，也可位于句中。4. 强调某个动作正在进行时，另一个动作突然发生，常用“过去进行时+when+一般过去时”结构。① I was walking in the street when he called me.② We were sleeping​​ when the earthquake ​​started​​.他打电话给我时,我正走在街上。开始地震时，我们正在睡觉。​ Simon: Hello, Grandpa. How was your day?Grandpa: Not bad. Thank you, Simon. We just had the third snowstorm of this winter. It (1)_____________(get) stronger while I (2)___________(read) the newspaper at about 7 this morning. What about you, Simon? Simon: We're all very well, Grandpa. It (3)____________(snow)here in Beijing when we went to the Palace Museum during the day. Lots of people (4)_______________(enjoy) the beauty of the Palace Museum in the snow.Grandpa: Sounds nice. Maybe I (5)______________(watch) the wonderful view on TV while you (6)______________(visit) there. Simon: Yeah, it was really wonderful. Come and take a look by yourself next time.P113gotwas readingwas snowingwere enjoyingwas watchingwere visitingHarbin woke up to a winter wonderland last week. There was a bigsnowstorm.When I got up on Saturday morning, it (1)______________(snow) heavily. The wind (2)______________(blow) hard all morning, but that just meant more time for fun inside with my family.It stopped snowing in the afternoon. Guess what I did? I built asnowman! I (3)______________(draw) a big smile on his face, put my hat on his head and took a photo. When it was almost time for dinner, I went home. Some people in the neighbourhood (4)_____________(clear)the snow from the streets.When I got home, my parents (5)______________(get) dinner ready. While we (6)______________ (enjoy) our meal, it began to snow again. It was so nice to have hot jiaozi on a cold day!P113was snowingwas blowingdrewwere cleaningwere gettingwere enjoyingP113Write about an emergency or a natural disaster that happened in your hometown, or one you heard about, using the past continuous tense.1. Mary ________ a picture when her dad go home yesterday evening. (2025北京) A. drawsB. was drawing D. is drawingC. will draw2. - Cindy, my sunglasses are on the floor and they are broken. What happened? - Sorry, dear. I don’t know. I _________ in the kitchen then. (2025甘肃) A. cookB. was cookingC. have cookedD. will cook3. Hey, John! what's up? I _____ a shower when you called. (2024 江苏无锡) A. had takenB. have taken C. was takingD. am taking4. While we _____ an English song, some visitors came into our classroom. (2024 黑龙江) A. were singingB. sangC. are singing5. - Helen, I didn't see you in the classroom at five yesterday afternoon. - Oh, I _____ singing for the graduation ceremony at that time. (2024云南) A. will practiceB. have practiced D. was practicingC. am practicing6. When I saw Xiao Wang yesterday, he ____ an old man cross the road. (2024福建) A. helpsB. was helpingC. will help根据汉语意思完成句子，每空一词。1. 第二天早上，娜娜醒来时，阳光正透过卧室的窗户照进来。 【2025陕西】 When Nana woke up the next morning, the sunshine _______ _______ in through her bedroom window.2. 登山者们正在尽最大努力登顶，那时突然开始下大雪了。 【2023北京】 The climbers _______ _______ _______ ________ to reach the top when it began to snow heavily. was shiningwere doing their best I. 单项选择。1. — Why are you so happy, Jack? — I met an old friend ______ I was walking on the street.A. if B. till C. after D. while2. Tom ______ his homework when his mother got back home. A. did B. is doing C. was doing D. will do3. — Lucy, what time did your uncle leave? — I don't know, Mum. I ______ music in my room. A. listen to B. listened toC. am listening to D. was listening to4. — I ______ you at 6 pm yesterday, but nobody answered me. — Sorry. I ______ the drums at that time.A. called; playedB. called; was playingC. was calling; played D. was calling; was playing5. — Vivian, could you please answer the question? — Sorry, I ______. Could you say it again?A. wasn't listening B. don't listen C. am not listening D. won't listen1. ________ we got to Nanning, it was raining. 2. John was taking photos ______ Mary bought a drink.3. The teacher was playing the piano ________ the students were singing. 4. _______________ the students were cleaning the classroom, the head teacher arrived.Ⅱ. 根据句意，用when或while填空。WhenwhenwhileWhen/While1. Can you make sentences using the past continuous tense?2. Can you use when, while and as correctly?1. Write a short text about the first snow of this year using the past continuous tense and when, while and as.2. Preview Word Power on page 114.Thanks！