时态大比拼,He works. He is working. He worked.,何为时态？,在英语中，不同时间发生的动作或存在的状态要用不同的动词形式来表现。,时态,现在进行时：,一般现在时：,一般过去时：,现在正在进行的动作,经常或习惯性的动作。,过去某个时间或时间段结束的动作。,一般现在时,every, sometimes, at times always , usually, often,seldom, never, every ,three times a day,现在进行时,一般过去时,yesterday, last week, -ago, the other day, in+年, just now ,When,nowthese days, right now， Look,Listen.at Present，at the moment,3,1,2,Tom always gets presents on his birthday.They usually go to school at seven oclcok.My mother often watches TV on the computer.We sometimes play basketball after school.,总 是,通 常,经 常,有 时,Hes twelve. I am a student.,一般现在时：表示现在的状态或经常、 习惯性的动作：,Look!,Lily,Lucy,现在进行时,表示现在说话瞬间正在进行的动作。She is reading in the reading room now.We are working on a farm these days.,1、Lucy did her homework at home.（改否定句）Lucy _ _ her homework at home. 2、He found some meat in the fridge.（变一般疑问句)_ he _ _ meat in the fridge? 3、There was some orange in the cup.（变一般疑问句)_ there _ orange in the cup?,didnt,do,any,find,Did,Was,any,1 一般过去时表示过去某个时间结束的动作或存在的状态。,I did my homework yesterday. I played soccer last Sunday. I cleaned my room last week. I went to the beach three years ago. I played tennis with my friends last weekend. I went to the movies three days ago.,He is a teacher.,2. Kangkang comes from China.,3. I usually take the bus to work.,先（一般疑问句）再（否定句）,Is he a teacher? He isnt a teacher.,Does Kangkang come from China? Kangkang doesnt come from China.,Do you usually take the bus to work? I dont usually take the bus to work.,句型变化操练,4.They are having classes.,5.Jane played the guitar last night.,Are they having classes? They arent having classes.,Did Jane play the guitar last night? Jane didnt play the guitar last night.,句型变化操练,改一般疑问句的方法：,首先看有无be动词，如果有，将be提到句首并大写，句末打问号. 如果没有be动词，看原句的动词形式来决定借用助动词do/does/did,并且行为动词要还原。,V-原形 V-s/es V-ed(过去式),+动词原形 ?,改否定句的方法：,以此类推,首先看有无be动词，如果有，在be 动词后面加not. 如果没有be 动词，看原句的动词形式来决定借用助动词do/does/did,并在后面加not,并且行为动词要还原。,主语+dont/doesnt/didnt+动词原形,表格对比学习,be+v-ing (现在分词）,在be 后加上not,Be提到句首,V -原形 V-三人单,在实义v.前借do ,does后加not，动词还原,Do,Does 提句首，+动原,V-ed (过去式）,在实义v.前借用did后加not，+动原,Did 提到句首，实义动词还原,Complete the sentences. 王先生是我们的英语老师。 1.Mr Wang _ (be) our English teacher. 2.Mr Wang _ ( not be) our English teacher. 3._ (be)Mr Wang our English teacher? 4.Yes,_ _ .No,_ _ .,is,is not/isnt,Is,he is,he isnt,一般现在时,一、写出下列动词的第三人称单数形式 1. work_ read_ 2.clean_ write_ 3. teach_ wash_ 4.guess_ watch_ 5 go_ do_ 6. study_ fly_ 7.cry_ play_ 8. have_,一、写出下列动词第三人称单数形式 1. work works read reads 2. clean cleans write writes 3. teach teaches wash washes 4. guess guesses watch watches 5 go goes do does 6. study studies fly flies 7.cry cries play plays 8. have has,动词第三人称单数,动词-ing形式的构成：,writing taking,getting running swimming,asking,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. look 2. live 3. stop 4. carry 5. hope 6. think 7. call 8. finish 9. want 10.are 11.go 12.have 13.do 14.get 15.come 16.say 17.see 18.put 19.eat 20.take 21.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 stopped 4. carrycarried5. hopehoped6.think thought 7. Callcalled 8. finish finished9. want wanted 10.Arewere 11.go went 12.have had 13.do did 14.get got 15.come came 16.say said 17.see saw 18.put put 19.eat ate 20.take took 21.read read,动词过去式 的构成,规则动词,不规则动词,规则动词过去式的构成,构成规则,例词,一般在动词末尾加 ed look lookedplay played结尾是 e 的动词加 - d live livedhope hoped,辅音字母+元音+辅音 ，双写 最后的辅音，再加ed,stop stopped plan planned,结尾是“辅音+y”的动词，变“y”为“i”再加ed,study studied carry carried,不规则动词表,原形 过去式 am is was are were begin began break broke bring brought build built buy bought,原形 过去式 catch caught come came do did draw drew drink drank drive drove eat ate fall fell,不规则动词表,原形 过去式 am is was are were begin began break broke bring brought build built buy bought,原形 过去式 catch caught come came do did draw drew drink drank drive drove eat ate fall fell,http:/zhdduya100.taobao.com/,am, iswas arewere gowent dodid havehad comecame taketook saysaid eatate seesaw getgot putput sleepslept givegave writewrote readread,