英语人教版七年级下册unit 12 section b 3a-selfcheck.docx

Unit 12 What did you do last weekend?Section B 3a-Selfcheckthe Simple Past Tense (一般过去时)一、教学目标1.让学生明确了解一般过去时的概念2.掌握一般过去时的结构、意义及动词过去式的变化二、教学重难点一般过去时动词过去式的变化三、教学方法问答法、讲授法四、教学用具白板、及相关材料Step1 Warming-up:1T: Whats the weather like today? S :略2T:What was the weather like yesterday? S :略3T:What did you do last night？S:略Step2 Lead-in:一般过去时表示在过去某个特定时间发生，或过去习惯性、经常性的动作。一般过去时不强调动作对现在的影响，只说明过去的事情。1. 表示过去发生的动作或存在的状态。 如：He bought the computer five years ago. 这电脑是他五年前买的。 It was then a small fishing village那时它只是一个小渔村。2.表示过去经常性或习惯性的动作。 如：We often played together when we were children 【注】表过去习惯性的动词，也可用used to或would。 如：He used to go to work by bus. 他过去常乘公共汽车去上班。3. 常用于一般过去时的时间状语或从句连用。（一般过去时最明显的现象就是常 由表达过去之时间的副词或副词短语来修饰它）just now（刚才） yesterday（昨天） the day before yesterday（前天）、 yesterday (morning,afternoon,evening)（昨天早上/下午/晚上） the other day = a few days ago（前几天）、before liberation（解放前）、once upon a time（很久以前）、 in the old days（过去的日子里）、That + 时间 eg. That day (那天)时间 + ago eg：two days ago(两天前)at+一个时间点、 eg. at the age of 10 (过去年龄）段last + 时间 eg.:night/week/Sunday/weekend/month/winter/year/century世纪）、when引导的状语从句 （过去时） eg.When I was 8 years old（当我八岁时）、二一般过去时的构成： 1. 用动词的过去式。作谓语的行为动词的词尾变化如下： 一般情况+edwork-worked以e字母结尾的辅音+dwrite-writed以辅音字母+y结尾变y变i+edfly-flies study supply重读闭音节结尾的单词，末尾只有一个辅音字母双写词尾字母+edstop-stopped regret plan refer 2. 一般过去时态的肯定句、否定句和疑问句形式(1)基本结构主动： 肯定句型 be 分为was,were v+ed 否定句型 was/were not didnt+v 一般疑问句型 was/were+ 主 did+主+V 特殊疑问句 特殊疑问词 + 一般疑问句 例句She often came to help us in those days. I didnt know you were so busy. （以be和like为例）： 主 语肯 定 式否 定 式疑 问 式第一、二人称和第三人称复数以及名词复数I was a student. We/You/ They were students. He/ She was a student. I / We/ You/ They/ liked music. Many people liked music.I was not a student. We/You/ They were not students. He/ She was not a student. I / We/ You/ They/ didnt like music. Many people didnt like music.Were you a student. Were you/ they students? Was he/ she a student? Did you/ they like music?Did many people like music?(2)一般过去时态的“三变”技巧 一变：肯定句变为否定句 1当句中含有情态动词或助动词could，would，should等时，可直接在其后面加not构成否定句。例如：I could get you a concert ticket. I could not / couldnt get you a concert ticket. 2当句中含有系动词was，were 时，可直接在其后加not构成否定句。 例如：I was on the Internet when you called me. I was not / wasnt on the Internet when you called me. 3当句中谓语是除情态动词、助动词、系动词was, were以外的动词时，在该动词之前加did not / didnt，动词还原，构成否定句。例如：The famous singer sang some Chinese songs. The famous singer did not / didnt sing any Chinese songs. 二变：陈述句变为一般疑问句 1移动词语的位置。将was，were, could，would，should等移到句首。 例如：He could pack his things himself. Could he pack his things himself? 2添加助动词did。谓语是除情态动词、助动词、系动词was, were以外的动词时，在主语之前加did，动词还原。例如： Mr Li looked very old. Did Mr Li look very old? 三变：陈述句变为特殊疑问句 1确定疑问词： 人who / whom， 物what， 原因why 频率how often， 长度how long， 时间when / what time 距离how far等等。 例如：They gave the concert last night. 地点where， When did they give the concert? 2辨认结构形式：疑问词+情态动词/助动词/ was / were / did +主语+.? 例如：The accident happened near the station. Where did the accident happen?例题解析： 1. Li Ming studied English this morning. （把此句变为一般疑问句） 例题解析： 1Mr. Mott is out. But he _ here a few minutes ago. A. was B. is C. will be D. would be 2. He promised to tell me by himself when I _. A. come B. would come C. came D. had come 解析：在时间状语从句中，用一般过去时表示过去将来。应选C。Step3 Practise:基础练习一、写出下列动词的过去式isam_ fly_ plant_ are _ drink_play_ go_ make _ does_ dance_worry_ ask _ taste_ eat_ draw_put _ throw_ kick_ pass_ do _have_ become_ grow_ teach_ buy_二、用be动词的适当形式填空1. I _ an English teacher now.2. She _ happy yesterday.3. They _ glad to see each other last month.4. Helen and Nancy _ good friends.5. The little dog _ two years old this year.6. Look, there _ lots of grapes here.7. There _ a sign on the chair on Monday.8. Today _ the second of June. Yesterday _ the first of June. It _ Childrens Day. All the students _ very excited.行为动词的过去时练习:1. He _ (live) in Wuxi two years ago.2. The cat _ (eat) a bird last night.3. We _ (have) a party last Halloween.4. Nancy _(pick) up oranges on the farm last week.5. I _ (make) a model ship with Mike yesterday.6. They_ (play) chess in the classroom last PE lesson.7.My mother_(cook) a nice food last Spring Festival.8. The girls_(sing) and_(dance) at the party.9 We(not eat) apples yesterday.10 We(not play) basketball every day.11 He(not go ) home once a week.三、句型变换1 There was a car in front of the house just now.否定句：_一般疑问句：_肯定回答：_否定回答：_2 They played football in the playground.否定句：_一般疑问句：_肯定回答：_否定回答：_1、Lucy did her homework at home.（改否定句