英语人教版八年级下册Unit5 Section A Period3.doc

Unit 5 What were you doing when the rainstorm came?Teaching aims：1 Knowledge objects：Talk about past events using the past progressive tense2 Ability objects：tell a story 3 Emotion,attitude and value：Learn to help each other and help the people in need.Teaching important points:Key words: rainstorm, suddenly, alarm , go off , pick up , strange, report, area, wood, light, window, match, beat, heavily, against, asleep, fall asleep, die down, rise, apart, passage, pupil, bright, play ground, bell, completely, silence, in silence, recently, date, tower, at first, realize, truthKey sentences: 1. What were you doing at eight last night? I was taking a shower. 2. What was she doing at the time of the rainstorm?She was doing her homework. 3. What was he doing when the rainstorm came?He was reading in the library when the rainstorm came. 4. What was Ben doing when it began to rain heavily?When it began to rain, Ben was helping his mom make dinner. 5. What was Jenny doing while Linda was sleeping?While Linda was sleeping, Jenny was helping Mary with her homeworkTeaching difficult points: the usage of when and whileThe third periodSection A 3 (Grammar focus-4c)Step 1 Revision Look at the pictures and make up the sentences.Step 2 Grammar Focus 1. What were you doing at eight last night?I was taking a shower. 2. What was she doing at the time of the rainstorm?She was doing her homework. 3. What was he doing when the rainstorm came?He was reading in the library when the rainstorm came.4. What was Ben doing when it began to rain heavily?When it began to rain, Ben was helping his mom make dinner. 5. What was Jenny doing while Linda was sleeping?While Linda was sleeping, Jenny was helping Mary with her homework.Step 3 the past progressive tense 1. 基本概念：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除有上下文暗示以外, 一般用时间状语来表示。2. 结构 was / were ( not ) + 动词-ing 3. 句式 肯定式：I/He/She/It was working.We/You/They/ were working. 否定式:I/He/She/It was not working.We/You/They/ were not working. 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/they working?Yes, you/we/they were.No, you/we/they were not.注：1) was not常缩略为wasnt; were not常缩略为werent。2) 一般过去时与过去进行时用法的比较: 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, 而过去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。例如:David wrote a letter to his friend last night. 大卫昨晚给他的朋友写了封信。(信写完了。)David was writing a letter to his friend last night. 大卫昨晚一直在给他的朋友写信。(信不一定写完。)Practice: Look at the picture and make up the dialogues.Step 4 过去进行时中的when和while 请仔细观察下面的例句，然后补全空格中的内容。 I was walking to school when I saw a cat in a tree. When Sally arrived home, her mother was cleaning the house. 主句的动作是持续性的，而从句动作是短暂性的，此时用_引导时间状语从句，主句用_时态，从句用一般过去时态。 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，从句的动作是持续性的，此时用_引导从句，主句用_时态，从句用过去进行时态。 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段时间同时发生，而且动作都是持续性的，此时用_引导从句，而且主句和从句都用_时态。 Practice: 汉译英。Step 5 活学活用 4a. 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 4b. 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 car 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.Step 6 Speaking 4c. What were you doing at these times