初中英語人教版八年級下冊Section A Grammar focus 4a-4c13 課件

1、人教版八年級下冊Unit 5What were you doing when the rainstorm came?Section A (Grammar Focus-4c) 洪洞縣第二中學(xué)校 陳秋花Teaching aims1. Questions and statements with the past progressive tense2. Conjunctions When and While讀下列句子, 總結(jié)出句子中包含的語法。What were you doing at eight last night?I was taking a shower.What was she doing

2、 at the time of the rainstorm?She was doing her homework.Guide OneGrammar FocusWhat was he doing when the rainstorm came?He was reading in the library when the rainstorm cameWhat was Ben doing when it began to rain heavily?When it began to rain, Ben was helping his mom make dinner.What was Jenny doi

3、ng while Linda wassleeping?While Linda was sleeping, Jenny was helping Mary with her homework.過去進行時1. 基本概念 過去進行時表示在過去某一時刻或一段時間內(nèi)正在進行的動作。Summary2. 結(jié)構(gòu) 肯定句：主語+was/ were + V-ing+其它 否定句： 主語 + wasnt/ werent + V-ing+其它 一般疑問句 Was/Were+ 主語+V-ing+其它? 特殊疑問句 疑問詞+was/were+主語+V-ing?3.標(biāo)志性時間 (1) at + 時間點 + 過去的時間 eg:

4、 at eight oclock yesterday (2) at this /that time+過去的時間 at this/that moment+過去的時間 eg: at this time last week(3) When 或 while引導(dǎo)的時間狀語從句過去進行時中的when和whilewhen和while都可表示“當(dāng)?shù)臅r候，引導(dǎo)時間狀語從句。你知道兩者在過去進行時中的用法有什么不同嗎？Guide Two I was walking to school when I saw a cat in a tree.When Sally arrived home, her mother wa

5、s cleaning the house. 主句的動作是持續(xù)性的，而從句動作是短暫性的，此時用_引導(dǎo)時間狀語從句，主句用_時態(tài)，從句用一般過去時態(tài)。when過去進行 While I was sleeping in the bedroom, someone knocked at the door. David fell while he was riding his bike. 主句的動作是短暫性的，從句的動作是持續(xù)性的，此時用_引導(dǎo)從句，主句用_時態(tài)，從句用過去進行時態(tài)。while一般過去 While Andy was waiting for the bus, he was reading a

6、 newspaper. He was cleaning his car while I was cooking. 主句和從句的動作在過去的某時刻或某段時間同時發(fā)生，而且動作都是持續(xù)性的，此時用while引導(dǎo)從句，而且主句和從句都 過去進行時態(tài)。比較 “when” and “while” When my mother came in, I was watching TV. = While I was watching TV, my mother came in. eg: When the bus arrived, the boy was walking down the street. = Wh

7、ile the boy was walking down the street, the bus arrived .教師點撥從句的動作是短暫性主句的動作是延續(xù)性動詞從句的動作為延續(xù)性主句的動作為短暫性活學(xué)活用4aLook 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 roomturn on the radio shop take the car to the car wash

8、延續(xù)性動詞短暫性動詞4bFill in the blanks with was, were, when or while.At 7:00 a.m., I woke up. _ I _ makingmy 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

9、 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 wasWhile When waswaswereExercisesFill with “While” or “When”1._ Mary was talking on the phone, her sister walked in. 2._ lilei bought her new dog, it was wearing a little coat.3._ I saw liMing, he was wearing a green shirt.4._ I was dancing, he was singing loudly.5. _ Linda finally saw Davy , he was jumping with a dog .6