初中英语人教版八年级下册过去进行时态的构成及运用(共5页).doc

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1、精选优质文档-倾情为你奉上Section A 3 (Grammar focus-4c)一、 教学内容Unit 5 4a-4c过去进行时态的构成以及运用区分和运用When和while引导的主从复合句二、 教学目标能够通过自主学习本节微课，掌握过去进行时的构成和用法。三、 教学重难点1、重点：过去进行时态的构成以及在时间状语从句中的运用。2、难点：学会区分并运用when和while引导的时间状语从句四、 教学步骤Step 1观察与感知The baby girl is reading a book. （now）The baby girl was sleeping. (at this time yes

2、terday)Mary is cooking now. (4:00)They were playing football at four yesterday afternoon.Step 2 总结与归纳 读下列句子，能否总结出句子中包含的语法？ 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 ra

3、instorm 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

4、3 过去进行时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 worki

5、ng?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

6、 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 when和while都可表示“当的时候”，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？ 请仔细观察下面的例句，然后补全空格中的内容。 I was walki

7、ng 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

8、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

9、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 acc

10、ident 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

11、 times last Sunday? Fill in the chart. Then ask your partner.You Your partner9:00 a.m.11:30 a.m.4:00 p.m.9:00 p.m. Step 7 ExercisesI. 根据汉语意思完成下列英语句子，每空一词。1. 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。 My mother _ _ clothes _ I _ home yesterday.3. 你做作业时，你妹妹在干

12、什么？ What _ your sister _ _ you _ _ your homework?. 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）。1. I was running in the park at 7:00 yesterday morning. (改为一般疑问句并作肯定回答) _ _ _ in the park at 7:00 yesterday morning? _, _ _.2. I was flying kites with my friends at this time last Sunday. (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) They _ _ basketball from three to four yesterday.Step 8 HomeworkAfter class, please make some dialogues with the phrases and sentences in 4c.专心-专注-专业