小升初时态专题四种时态的区分与运用学习教案.pptx

小学(xiǎoxué)的时态分几种？一、现在(xiànzài)进行时现在分词的变法(biànfǎ)规律：1.I____(write,amwriting,iswriting,arewriting)aletternow.
2.Look,it_____(begin,isbeginning,ambeginning,arebeginning)torain.
3.They____(study,isstudying,amstudying,arestudying)medicineattheMedicalInstituteofChengdethesedays.
4.He_____(teach,amteaching,
isteaching,areteaching)anEnglishlessonatthistime.二、一般现在时：
1、概念(gàiniàn)：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,everyweek(day,year,month…),onceaweek,onSundays,etc.
3、基本结构：①be动词；②行为动词
e.g：Hegoestoschooleveryday.
Theygotoschooleveryday.
Heisateacher
当主语是第三人称(dìsānrénchēnɡ)时，谓语动词要用第三人称(dìsānrénchēnɡ)单数形式，加-s/es。除此之外都用动词原形。动词第三人称单数形式(xíngshì)变化规则规则三、一般(yībān)将来时1、There_____someshowersthisafternoon.
AwillbeBwillhave
CisgoingtobeDaregoingtohave
2、It____mybrother’sbirthdaytomorrow.She_____aparty.
Aisgoingtobe;willhaveBwillbe;ishaving
Cwillbe;isgoingtohaveDwillhave;isgoingtobe
3、LiMingis10yearsoldnow,nextyearhe_____11.
AisBisgoingtobeCwillbeDwilltobe
四、一般(yībān)过去时1、概念：过去(guòqù)某个时间里发生的动作或状态；过去(guòqù)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：yesterdaymorning(afternoon,evening)等；
2)由“last+一时间名词”构成的短语：lastnight,lastyear(winter,month,week)等；
3)由“时间段+ago”构成的短语：amomentago,
ashorttimeago,anhourago等；
4)其它：justnow等3、基本(jīběn)结构：动词(dòngcí)过去式
形式变化规则构成规则不规则动词(dòngcí)过去式1.He____(be,was,were,been)hereamomentago.
2.They____(be,was,were,been)herejustnow.
3.Thescientists_____(leave,leaves,leaved,left)forAmericayesterday.
4.Lastweekwe______(visit,visited)theScienceMuseum.
历年(lìnián)真题〔真题回顾(huígù)〕课后思考(sīkǎo)与讨论感谢您的观看(guānkàn)！内容(nèiróng)总结