英语动词时态讲解ppt课件.ppt

英语动词时态讲解,时态,定义： 在英语中，不同时间发生的动作要用不同的动词形式来表 示，这每一种不同的形式就叫做时态。,时态,一般现在时一般将来时一般过去时现在进行时现在完成时过去进行时过去将来时过去完成时,一般现在时,表示一般情况和经常发生的动作。时间状语为every day 或 every 引导的时间状语often，always，usually,一般现在时,动词碰到第三人称单数时，要加 “s”work - works辅音字母和“y”结尾的词，如carry - carries以s、x、ch、sh结尾的加“es”，如wash - washesgo - goesdo - doeshave - hasbe 的一般现在时是am is are,一般现在时,例句He goes to school on foot every day.We often have supper at home.She doesnt do her work every Sunday.,一般过去时,指过去发生的动作或事情时间状语：yesterday 引导的词组ago 引导的词组last 引导的词组the day before yesterday,一般过去时,动词变化：动词变成过去式，动词加“ed”Play - played辅音字母和“y”结尾的词，如carry - carried重读闭音节的单词，双写最后一个字母，再加edstop - stopped以e结尾的加-d 不规则的用法要牢记,一般过去时,5. 例句He bought a book yesterday.I watched a match last week.He left here two days ago.,一般将来时,表示将来发生的动作。时间状语： next 引导的词组tomorrow 引导的词组the day after tomorrow动词变化：will + 动词原型例句I will visit you tomorrow.He wont come back next week.,现在进行时,表示正在发生的动作。时间状语：now /Look /Listen由be动词动词ing构成动词变化加ingclean - cleaning以不发音“e”结尾的，去掉字母“e”，再加ingmake - making重读闭音节的单词，双写最后一个字母，再加ingswim - swimming,现在进行时,例句The boys are playing now.Look! They are planting trees.Listen! He is singing.,现在完成时,动词变化 动词变成过去分词加edPlay - played辅音字母和“y”结尾的词，如carry - carried重读闭音节的单词，双写最后一个字母，再加edstop - stopped不规则动词动词由have（has）+ 过去分词 构成,现在完成时,表示动作已经完成He has left .I have already had a rest.表示动作不仅已经完成，还要持续（在这个用法当中，动词要用延续性动词，与for引导的一段时间和since引导的短语连用）He has been away for two days. I have already taught in this school since 1990.The bird has been dead for a month.We have made lots of friends since we came here.,过去进行时,指在过去的某一个时间正在发生的动作。时间状语at this time yesterdayat five oclock yesterday afternoon动词由be动词+动词ing形式构成例句He was watching TV at this time yesterday.,过去将来时,指对过去的某一个时间来讲，将要发生的动作。动词由would+动词原型构成。例句He would go to the park the next day.He said he would work hard next term.,过去完成时,指对过去的某一个时间来讲，已经发生的动作。动词由had+过去分词构成。例句she had borrowed a book before she went to the park.We had learned many new words by the end of last term.,