小学英语四种时态语法讲解课件.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,四种时态讲解,小学的时态分几种？,一、现在进行时（四年级下）,二、一般现在时（五年级上）,三、一般将来时（五年级下）,四、一般过去时（五年级下）,过去,现在,将来,一,般,过,去,时,一,般,现在时,现在进行时,一,般,将来时,时间轴,一、一般过去时,1、概念：,过去,某个时间里发生的动作或状态；,过去,习惯性、经常性的动作、行为。,2、标志词：,1,）,yesterday,或以其构成的短语：yesterday morning(afternoon,evening)等；,2,),由“,last,+一时间名词”构成的短语：last night,last year(winter,month,week)等；,3,),由“时间段+,ago,”构成的短语：long long ago,，,a moment ago,a short time ago,three days ago等；,4,),其它：just now等,一般过去时,3、基本结构：,be动词（注意be的人称变化，单数用,was,，复数用,were,）,I,was,in the classroom,yesterday morning,He,was,in the classroom,yesterday morning,They,were,in the classroom,yesterday morning,行为动词（动词过去式规则变化和不规则变化）,I,visited,my grandparents yesterday.,2,）,动词过去式不规则变化要牢记：,am,is-was are-were do-did see-saw,say-said give-gave get-got go-went come-came have-had,eat-ate take-took,run-ran,sing-sang put-put,make-made,read-read write-wrote,draw-drew,drink-drank,fly-flew,ride-rode speak-spoke sweep-swept,buy-bought swim-swam,sit-sat bringbrought can-could cut-cut become-became begin-began draw-drew feel-felt find-found forget-forgot hear-heard keep-kept know-knew learn-learnt,（,learned,）,leave-left let-let lose-lost,meet-met sleep-slept teach-taught tell-told write-wrote think-though,二、一般现在时,一般现在时：,1、概念,：经常、反复发生的动作或行为及现在的某种状况。,2、标志词：,always,usually,often,sometimes,every week(day,year,month,),on Sundays,etc.,3、基本结构,：,be,动词,(is/am/are),；,行为动词,(,基本用原形，但主语三单动词要加,s/es),e.g：,I,am,a teacher,.(,现在的状态,),He,goes,to school,every,day,.,Katie,often,has,breakfast,at 7:15,.,The earth,moves,around the sun.(,科学事实或真理,),一般现在时常以,动词原形,表示，但当主语是第三人称时，谓语动词要用第三人称单数形式，加,-s/es,。,动词第三人称变化规则：,规则,例子,一般在词尾加,-s,Play,plays leave,leaves,swim,swims,以字母,s,x,ch,sh,o,结尾的词加,-es,，读,/iz/,如果动词原形词尾已有,e,则只加,-s,。,pass,passes watch,watches,teach,teaches wash,washes,do,does,以辅音字母加,y,结尾的词,，先变,y,为,i,再加,-es,读,/z/,study,studies carry,carries,fly,flies,三、现在进行时,现在进行时,1、概念：,现在（说话的瞬间）,正在进行或发生,的动作，强调“此时此刻”。,2、标志词：,look 看；listen听；now现在；,3,、基本结构：,be+,动词,ing,（也叫现在分词）,（主语不同，,be,的形式也不同）,Look,！,It,is raining,outside.,Listen!She,is singing,an English song.,We,are reading,storybooks now.,现在分词的变法规律：,1、一般在动词词尾加上-ing,E.g.jump-jumping,2、以,不发音,字母,e,结尾的动词，先去e，再加-ing.have-having,/,write-writing,/dance-dancing/,take-taking/make-making/come-coming,3、,重读闭音节,结尾的词，,双写尾字母,，,再加上-ing.,sit sitting,/,put-putting,/swim-swimming/,run-running/skip-skipping/hop-hopping,四、一般将来时,一般将来时,1、概念：表示,将要发生的动作,或存在的状态及,打算、计划或准备,做某事。,2、标志词：,tomorrow,next day(week,month,year),soon,the day after tomorrow（后天）等。,3、基本结构：,1）be going to+动词原形；（be有人称变化）,2）will+动词原形.,3）shall 动词原形（第一人称）,I,m going to,have,a picnic,this weekend,.,Tomorrow,will,be,Mid-Autumn Festival.,We,will eat,mooncakes,.,口头小结一下：,一般过去时,一般现在时,现在进行时,一般将来时,概念,标志词,基本结构,课后思考与讨论,1、四种时态的肯定句如何转化为否定句？,2、四种时态的肯定句如何转化为一般疑问句？,3、四种时态的肯定句如何转化为特殊疑问句？,