一般现在时一般过去时基本用法1、表示现在经常性或习惯性的动作或状态,以及能力爱好。2、表示客观真理、科学事实、格言或警句和习惯用语中。1、表示过去经常性或习惯性的动作。2、表示过去发生的动作或存在的状态。谓语结构主语+am/isare+表语主语+动词原形/三单1.主语+was/were+表语2.主语+动词的过去式否定句主语+am/isare+not+表语主语+do/does+not+动词原形主语+was/were+not+表语主语+did+not+动词原形疑问句am/isare+主语+表语do/does+主语+动词原形was/were+主语+表语did+主语+动词原形特征词always,usually,often,sometimes,attimes,everyday,onSundays,nowandthen,seldomyesterday,lastSundaymorning,lastweek,lastyear,justnow,theotherday,onceuponatime,anhourago,in1982例句1.Helikeslivinginthecountry.2.Theearthrunsaroundthesun.3.Theteachertoldusthattheearthisround.1.Weoftenplayedtogetherwhenwewerechildren.2.Heboughtthecomputerfiveyearsago.3.Itwasthenasmallfishingvillage.现在进行时过去进行时基本用法1、表示说话人在说话时正在进行的动作。2、表示当前一段时间内的活动或现阶段正在进行的动作.（说话时这个动作并不一定正在进行。）表示过去某一时间正在进行的动作。谓语结构主语+am/is/are+doing主语+was/were+doing疑问否定变疑问往前提，变否定加not变疑问往前提，变否定加not特征词now,listen!,look!,thesedaysthen,atthattime,thistimeyesterday,at10:00lastSundaynight,allday,fromninetotenlastevening，when,while例句1.We’rehavingameeting.2.Weareworkingonthefarmthesedays.3.I’mwritingabookthismonth.1.HewasplayingwhileIwasstudying.2.Iwasdoingmyhomeworkthistimeyesterday.一般将来时过去将来时基本用法表示将来发生的动作或存在的状态.从过去看将来要发生的事(过去的将来)谓语结构主语+am/is/aregoingtodo主语+willdo(第一人称也可用shall)主语+am/is/are+todo主语+was/weregoingtodo主语+woulddo主语+was/were+todo疑问否定变疑问往前提，变否定加not变疑问往前提，变否定加not特征词nextSundaymorning,nextmonth,nexttime常用于主句为过去时的宾语从句中时态的特殊用法1、主句是一般将来时,时间、条件、让步、方式状语从句须用一般现在时表一般将来时(即主将从现)；nextweek,tomorrow,tomorrowafternoon,inafewdays,inamonth,soonthenext/followingday/week/month例句1.Weshallhavealotofrainnextmonth.2.Lookatthedarkclouds.It’sgoingtorain.3.I’mgoingtowashthecarifIhavetime.4.Ithinkwearetomeetagainmanyyearslater.5.Arewetohandinthepapersat10:30?1.TheysaidtherailwaywastobeopenedtotrafficonMayDay．2.Wewereabouttogooutwhenitbegantorain．3.Hesaidhewouldcometoseeyouwhenhehadtime．现在完成时过去完成时基本用法1、表示过去发生的动作对现在产生的影响或结果，或说话时已完成的动作。2、表示从过去已经开始，持续到现在,也许还会持续下去的动作或状态。（延续性动词）过去完成时表示过去某一时刻或者某一动作之前完成的动作或状态，即“过去的过去”谓语结构主语+have/has+动词过去分词主语+had+动词过去分词疑问否定变疑问往前提，变否定加not变疑问往前提，变否定加not特征词1.already,yet,ever,never,just,before,recently=lately;2.for+一段时间,since+点时间/具体时间,sincetwoyearsago,uptonow=sofar=bynow=tillnow,inthelast/pastfewyears,inrecentyearsbefore,by,when,bytheendoflast⋯例句1.Ihavefinishedthereport.2.Shehascleanedtheroom.3.Ihavekeptthelibrarybookfor2weeks.(borrow)4.Greatchangeshavetakenplaceinourhometownsincewelefthere.5.Itis/hasbeentwoyearssinceIgraduated.1.Bytheendoflastyearwehadbuiltfivenewhouses.2.Ihadlearnt5000wordsbeforeIenteredtheuniversity.3.Beforeheslept,hehadworkedfor12hours.现在完成进行时基本用法表示现在以前一段时间里一直在进行的动作,这一动作仍在进行。谓语结构主语+have/hasbeen+动词ing疑问否定变疑问往前提，变否定加not变疑问...
