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1、英语时态总结Ⅰ、一般现在时1、概念:1)表示经常性或习惯性的动作,常与表示频度的时间状语连用。时间状语:always,usually,often,sometimes,seldom,never,everyday,
twiceaweek,onSunday,etc.(提问用Howoften)例:Ileavehomeforschoolat7everymorning.2)客观真理,客观存在,科学事实。例:Theearthmovesaroundthesun.地球绕太阳转动。ShanghailiesintheeastofChina.
2、上海位于中国东部。3)格言或警句。例:Pridegoesbeforeafall.骄者必败。注意:宾语从句中,即使主句是过去时,从句谓语是客观真理也要用一般现在时例:Columbusprovedthattheearthisround.哥伦布证实了地球是圆的。2、结构:表状态S+am/is/are+P(句中有实义动词不用be)表动作S+V原+O(若主语是单三人称,谓动加s/es。)3、句式变化:变疑问,有be把be提到主语前;无be在主语前加do/does,谓动变为原形。变否定,有be在be后加“not”;无be在主语后加
3、don’t/doesn’t,谓动变为原形。例:①Theyareintheclassroom.→Aretheyintheclassroom?Yes,theyare./No,theyaren’t.→Theyaren’tintheclassroom②Heoftenwaterstheflowers.→Doesheoftenwatertheflowers?Yes,hedoes./No,hedoesn’t.→Hedoesn’toftenwatertheflowersⅡ、一般过去时1、概念:1)表示在确定的过去时间里所发生的动作或存
4、在的状态。常用时间状语:yesterday,thedaybeforeyesterday,lastweek,justnow,
anhourago,theotherday,in1982.attheageof5,oneday,longlongago,etc.例:Wheredidyougojustnow?2)表示在过去一段时间内,经常性或习惯性的动作。例:WhenIwasachild,Ioftenplayedfootballinthestreet.2、结构:表状态S+was/were+P表动作S+V过去式+O(注:句中有实义动
5、词不用be)3、句式变化:变疑问,有be把be提到主语前;无be在主语前加did,谓动变为原形。变否定,有be在be后直接加“not”;无be在主语后加didn’t,谓动变为原形.例:①ShewasinXi’anlastmonth.→WassheinXi’anlastmonth?
Yes,shewas./No,shewasn’t.→Shewasn’tinXi’anlastmonth.②Dannygrewarosejustnow,→DidDannygrowarosejustnow?Yes,hedid./No,hedidn
6、’t.→Dannydidn’tgrowarosejustnow,Ⅲ、现在进行时:1.概念:表示现阶段或说话时正在进行的动作。时间状语:now,atthistime,以及有look,listen时。例:Listen!Thebirdsaresinging.2、结构:S+am/is/are+doing3、句式变化:变疑问,把am/is/are提到主语前;变否定,在am/is/are后直接加“not”。例:①Iamwritingaletternow.→Areyouwritingaletternow?
Yes,Iam./No,I
7、’mnot.→Iamnotwritingaletternow.(注:am和not不能缩写。)②Theboysareplayingfootball.→Aretheboysplayingfootball?Yes,theyare./No,theyaren’t.→Theboysaren’tplayingfootball.Ⅳ、过去进行时:1.概念:表示过去某段时间或某一时刻正在发生或进行的动作。.时间状语:atthistimeyesterday,atthattime,at8:00yesterday,或有when/while引导的
8、时间状语从句等。例:WewerehavinganEnglishclassat9:30yesterdaymorning.IwasreadingabookwhilemymotherwaswatchingTV.32、结构:S+was/were+doing3、句式变化:变疑问,把was/were提到主语前;变否定,在was/were后直接