1、Unit3 SectionA Grammar Focus-4c 精品教案 Step 1 Revision Look at the pictures and make up the sentences. Step 2 Grammar Focus 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 do ing her homework. 3. What w
2、as 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 Ma
3、ry with her homework. Step 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
4、 were. No, you were not. Were you working? Yes, I was. No, I was not. Was he/she/it working? Yes, he/she/it w as. 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
5、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 las t 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
6、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 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 fe
7、ll 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 tabl
8、e 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 _ l
9、istening 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
10、 snow from the night before. Step 6 Speaking 4c. What were you doing at these times last Sunday? Fill in the chart. Then ask your partner. Step 7 Exercises I. 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 _ ho
11、me yesterday. 3. 你做作业时，你妹妹在干什么？ 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
12、. (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 Homework After class, please make some dialogues with the phrases and sentences in 4c. You Your partner 9:00 a.m. 11:30 a.m. 4:00 p.m. 9:00 p.m.
