动词过去式讲解ppt课件.pptx
一般过去时态,什么是一般过去时？,一般过去时表示过去某个时间发生的动作或存在的状态。也表示过去经常或反复发生的动作。,Can you make some sentences with past tense?,一般过去时的结构,Jenny bought a skirt yesterday.Jenny didnt buy a skirt yesterday.Did Jenny buy a skirt yesterday？肯定结构：主+动词的过去式+其他.否定结构：主+did not（didnt）+动词原形+其他.一般疑问句的构成：Did+主+动词原形+其他？ 肯定回答：Yes, 主+did.; 否定回答：No, 主+didnt.,如何判定一般过去时,一、通过句子中是否有表示过去的时间状语来判定。(1). 介词+表示过去时间的年、月、日，如 in 1998(2). yesterday 以及由yesterday 构成的短语：yesterday morning, the day before yesterday(3).带有ago的短语: 如two days ago; five years ago(4). Last 构成的短语，如last month, last night(5).表示过去的词或短语，如once, at that time, just now,A nice car! Is it yours? No, it isnt. I _ it from a friend of mine two days ago.A. borrow B. have borrowedC. will borrow D. borrow点拨： 由two days ago可知“借车”是过去某个时间发生的动作，应用一般过去式。,二、若找不到时间状语，则可以通过上下文判断。eg: Where did you go ? I went to Beijing.三、两个或两个以上动词用and连接时，如前一个动词为过去式，后面的动词也要用一般过去式。eg: 我打开了电视 ，坐下来看节目。I turned on TV, sat down and watched the program.,( ) 1. My mother had brekfast and_ to work. A. go B. went C. going D. to go,( )2. - How _ your vacation? - It was pretty good. A. was B. were C. did D. do( ) 3. - Where _ they go yesterday? - They went to the Summer Palace. A. are B. do C. did D. is( ) 4. - Where did you go on vacation? - I _ my grandma. A. visit B. visited C. visits D. visiting,A,C,B,B,1.写出下列动词的过去式.,1. stay _2. visit _3. swim _4. study _5. fly _,6. stop _7. help _8. make _9. walk _10. decide _,stayed,visited,swam,studied,flew,helped,made,walked,decided,stopped,2.动词过去式是怎样构成的呢？,动词过去式的构成,a. 一般在动词原形后直接加-ed。如looklooked。b. 以不发音的字母-e结尾的动词，直接加-ed.如livelived。c. 末尾只有一个辅音字母的重读闭音节，先双写辅音字母，再加-ed。如triptripped。d. 末尾是辅音字母+-y 结尾的动词，先变-y为-I, 再加-ed。如say said。e. 动词的不规则变化。,动词过去式转换练习将下列动词变为过去式,返回上页,订正答案,1. look2. live3. stop4. carry5. hope6. trip7. call 8. finish9. want10.are 11. e16.say17.see18.put19.eat20.take21.read,返回上页,返回首页,返回练习,动词过去式转换练习答 案,1. look looked2. live lived3. stop stopped4. carry carried5. hope hoped6. trip tripped7. call called8. finish finished 9. want wanted10.are were 11.go went 12.have had13.do did14.get e came16.say said 17.see saw18.put put19.eat ate20.take took21.read read,
