人教版八年级下册英语unit5第四课时ppt课件.ppt

1、When I He was doing When I called him up, he was sleeping. Make up the sentences. While I He was doing While I walked to school, he was eating. When I He was doing When I read the newspaper, he was watching TV. Teaching aims 1.能正确使用连词when 和while 2.能正确使用下来常用表达： Go off, pick up, fall asleep, die down,

2、 have a look, What were you doing at eight last night? I was taking a shower. What was she doing at the time of the rainstorm? She was doing her homework. 读下列句子读下列句子, 你能总结出句子中包含的语法吗？你能总结出句子中包含的语法吗？ Task1 What was he doing when the rainstorm came? He was reading in the library when the rainstorm came

3、. What was Ben doing when it began to rain heavily? When it began to rain, Ben was helping his mom make dinner. What was Jenny doing while Linda was sleeping? While Linda was sleeping, Jenny was helping Mary with her homework. 1. 基本概念基本概念 过去进行时表示在过去某一时刻或一段过去进行时表示在过去某一时刻或一段 时间内正在进行的动作。这一特定的过去时间内正在进行的

4、动作。这一特定的过去 时间除有上下文暗示以外时间除有上下文暗示以外, 一般用时间状语一般用时间状语 来表示。来表示。 2. 结构结构 was / were + 动词动词-ing 例如例如: A: What were you doing at eight last night? 昨晚八点你在干什么？昨晚八点你在干什么？ B: I was taking a shower. 我我(当时当时)在淋浴。在淋浴。 A: What was he doing when the rainstorm came? 暴风雨来的时候他在干什么？暴风雨来的时候他在干什么？ B: He was reading in the

5、 library when the rainstorm came. 暴风雨来的时候他在暴风雨来的时候他在 图书馆看书。图书馆看书。 A: What was Jenny doing while Linda was sleeping? 琳达在睡觉的时候琳达在睡觉的时候, 珍妮在做什么？珍妮在做什么？ B: While Linda was sleeping, Jenny was helping Mary with her homework. 琳达在睡觉的时候琳达在睡觉的时候, 珍妮在帮助玛丽做珍妮在帮助玛丽做 作业。作业。 肯定式：肯定式： I/He/She/It was working. We/Y

6、ou/They/ were working. 否定式否定式: I/He/She/It was not working. We/You/They/ were not working. 3. 句式句式(以以work为例为例) 疑问式和简略回答疑问式和简略回答: Was I working? Yes, you were. No, you were not. Were you working? Yes, I was. No, I was not. Was he/she/it working? Yes, he/she/it was. No, he/she/it was not. Were we/you/

7、they working? Yes, you/we/they were. No, you/we/they were not. 注：注： 1) Was not 常缩略为常缩略为 wasnt; were not 常缩略为常缩略为 werent。 2) 一般过去时与过去进行时用法的比一般过去时与过去进行时用法的比 较较: 一般过去时表示在过去某个时间一般过去时表示在过去某个时间 发生过的动作或存在的状态发生过的动作或存在的状态, 而过去而过去 进行时则表示在过去某一时刻或某进行时则表示在过去某一时刻或某 一段时间正在进行的动作。一段时间正在进行的动作。 例如例如: David wrote a let

8、ter to his friend last night. 大卫昨晚给他的朋友写了封信。大卫昨晚给他的朋友写了封信。(信写完信写完 了。了。) David was writing a letter to his friend last night. 大卫昨晚一直在给他的朋友写信。大卫昨晚一直在给他的朋友写信。(信不信不 一定写完。一定写完。) at five yesterday afternoon A: What was the boy doing at table at five yesterday afternoon? B: He was speaking with a girl. A:

9、Was the girl at the table writing? B: No, she wasnt. when和和while都可表示“当都可表示“当的的 时候”，引导时间状语从句。你知道两时候”，引导时间状语从句。你知道两 者在过去进行时中的用法有什么不同吗？者在过去进行时中的用法有什么不同吗？ 请仔细观察下面的例句，然后补全请仔细观察下面的例句，然后补全 空格中的内容。空格中的内容。 I was walking to school when I saw a cat in a tree. When Sally arrived home, her mother was cleaning th

10、e house. 主句的动作是持续性的，而从句动作是主句的动作是持续性的，而从句动作是 短暂性的，此时用短暂性的，此时用 _ 引导时间状语从引导时间状语从 句，主句用句，主句用 _ 时态，从句用一般时态，从句用一般 过去时态。过去时态。 过去进行过去进行 when While I was sleeping in the bedroom, someone knocked at the door. David fell while he was riding his bike. 主句的动作是短暂性的，从句的动作主句的动作是短暂性的，从句的动作 是持续性的，此时用是持续性的，此时用 _ 引导从引导从

11、 句，主句用句，主句用 _ 时态，从句时态，从句 用过去进行时态。用过去进行时态。 一般过去一般过去 while While Andy was waiting for the bus, he was reading a newspaper. He was cleaning his car while I was cooking. 主句和从句的动作在过去的某时刻或某主句和从句的动作在过去的某时刻或某 段时间同时发生，而且动作都是持续性段时间同时发生，而且动作都是持续性 的，此时用的，此时用 _ 引导从句，而且主引导从句，而且主 句和从句都用句和从句都用 _ 时态。时态。 过去进行过去进行 whi

12、le 将下列汉语句子翻译成英语。将下列汉语句子翻译成英语。 1. 当我正在网上查找信息的时候，门铃当我正在网上查找信息的时候，门铃 响了。响了。 While I was looking for information on the Internet, the door bell rang. 2. 当我看见他的时候，他正在做一架模当我看见他的时候，他正在做一架模 型飞机。型飞机。 He was making a model plane when I saw him. 3. 当我正在跑步的时候，我妈妈和我妹当我正在跑步的时候，我妈妈和我妹 妹正在放风筝。妹正在放风筝。 While I was ru

13、nning, my mother and my sister were flying a kite. Look at the table and write sentences with both while and when. John Mary take photos buy a drink play the piano leave the house clean his room turn on the radio shop take the car to the car wash 4a Task 2 1. While John was taking photos, Mary bough

14、t a drink. John was taking photos when Mary bought a drink. 2. While John was playing the piano, Mary left the house. John was playing the piano when Mary left the house. 3. While John was cleaning his room, Mary turned on the radio. John was cleaning his room when Mary turned on the radio. 4. While

15、 John was shopping, Mary took the car to the car wash. John was shopping when Mary took the car to the car wash. Fill in the blanks with was, were, when or while. 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 ca

16、r accident near our home. My brother and I went out right away to have a look. _ we got to the place of the accident, the car _ in bad shape from hitting a tree. But luckily the driver _ fine. The roads _ icy because of the heavy snow from the night before. While was was While When was was were 4b T

17、ask 3 What were you doing at these times last Sunday? Fill in the chart. Then ask your partner. You Your partner 9:00 a.m. 11:30 a.m. 4:00 p.m. 9:00 p.m. 4c Speaking A: What were you doing at nine oclock last Sunday morning? B: I was sleeping. How about you? A: I was doing my homework. B: Youre kidd

18、ing! I. 根据汉语意思完成下列英语句子，每空根据汉语意思完成下列英语句子，每空 一词。一词。 1. 昨天下午五点钟你哥哥在做什么？昨天下午五点钟你哥哥在做什么？ What _ your brother _ at five yesterday afternoon? 2. 昨天我回到家时，我妈妈在洗衣服。昨天我回到家时，我妈妈在洗衣服。 My mother _ _ clothes _ I _ home yesterday. was washing was doing when got 3. 你做作业时，你妹妹在干什么？你做作业时，你妹妹在干什么？ What _ your sister _ _

19、 you _ _ your homework? while were doing was doing . 根据各题后括号内的要求完成下列各根据各题后括号内的要求完成下列各 题，每空一词（含缩略形式）。题，每空一词（含缩略形式）。 1. I was running in the park at 7:00 yesterday morning. (改为一般疑问句并改为一般疑问句并 作肯定回答作肯定回答) _ _ _ in the park at 7:00 yesterday morning? _, _ _. Yes I was Were you running 2. I was flying kit

20、es with my friends at this time last Sunday. (对划线部分提问对划线部分提问) _ _ _ _ at this time last Sunday? 3. They were playing basketball from three to four yesterday. (改为否定句改为否定句) They _ _ basketball from three to four yesterday. werent playing What were you doing Summary After class, please make some dialogues with the phrases and sentences in 4c. Preview 1.Finish SectionB 1a. 2. Read the sentences 1c.