高二时态讲解一般时态进行时态完成时态完成进行时态现在write,writesam/is/are+writinghave/has+writtenhave/has+been+writing过去wrotewas/were+writinghad+writtenhadbeen+writing将来shall/will+writeshall/will+be+writingshall/willhavewrittenshall/willhavebeenwriting过去将来should/would+writeshould/would+be+writingshould/would+have+writtenshould/would+have+been+writing一般现在时提示词：always,often,usually,nowandthen,seldom,sometimes,occasionallyA)表示现在发生的动作、情况、状态和特征。B)习惯用语。C)经常性、习惯性动作。例：Healways_______________others.（他总是帮助别人。）helpsD)客观事实和普遍真理。尤其要注意，如果前后文不是一般现在时，则无法保持主句、从句时态一致。1.Asweallknow,thesun_____________ineast.rises2.Monthsagowesailedtenthousandmilesacrosstheopensea,which______thePacific,andwemetnostorm.A.wascalledB.iscalledC.hadbeencalledD.hasbeencalledE)表示一个按规定、计划或安排要发生的动作，（仅限于某些表示“来、去、动、停、开始、结束、继续”等的动词）可以与表示未来时间的状语搭配使用。常见的用法是：飞机、火车、轮船、汽车等定期定点运行的交通方式。1.Thenexttrain__________at3o'clockthisafternoon.leaves（下一趟火车今天下午3点开车。）2.Howoften________thisbus_______?（这班车多久一趟？）does,run3.Lookatthetimetable.Hurryup!Flight4026_________offat18:20A.takesB.tookC.willbetakenD.hastakenF)在时间和条件状语从句里经常用一般现在（有时也用现在完成时）表示将来事情。1.Whenyouhavefinishedthereport,I__________waitedforabout3hours.（等你完成这份报告的时候，我就已经等了将近3个小时了。）willhaveMyparentshavepromisedtocometoseemebeforeI_________forAfricaA.haveleftB.leaveC.leftD.willleave一般过去时提示词：yesterday;lastmonth;justnow;theotherday3daysago;in1949A)表示过去某个时间发生的动作或情况。The3ofus________aroundEuropeforaboutamonthlastsummer.traveledB.havetraveledC.hadtraveledD.travel----Kevin,youlookworried.Anythingwrong?-----Well,I__________atestandI’mwaitingfortheresult.willtakeB.tookC.hadtakenD.takeB)表示过去习惯性动作。特别是由would/usedtodo表达的句型，本身表示的就是过去时。1.Theoldman____________onabenchinthequietparkandlookatothersforhourswithoutdoinganythingortalkingtoanybody.wouldsit2.He_____________visithismotheronceaweek.（他以前总是每周看望一次他的母亲。）_____________________________________Heisusedtogettingupat6.他习惯于六点钟起床注意：usedtodo的否定形式和疑问形式很特别：你怎么写都正确。以否定形式为例：usednottodo,didn'tusedtodo,didn'tusetodo都对。Usedtodo经常与beusedtodoingsth/sth结构进行对比。前者表