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1、时态一般现在时1、定义:表示经常发生或习惯性的动作、状态。句中通常有usually,often,everyday,sometimesalways,atweekends,onSundays等表示经常性时间的短语。2、构成:1)当谓语是be动词时，一般现在时的构成:主语+be动词+其他如:Iamastudent.HeisJim'sfather.TheyarefromJapan.2)当谓语是行为动词时，一般现在时的构成:①主语(非第三人称单数)+动词原形+其他如:IoftenwatchTVattheweekends.Mr.GreenandMrs.Greenlikecollectingstamps.②
2、主语(第三人称单数)+动词的第三人称单数形式+其他如:JimusuallyvisitshisgrandparentsonSundays.Shesometimesgoestotheparkwithhermother.3、动词三单形式的变化规则:一般情况下，直接加s如:read-reads,swim-swims以s,x,sh,ch,o结尾，加es如:wash-washes,watch-watches,do-does以辅音字母+Y结尾，变Y为i，再加es如:study-studies,fly-flies不规则变化如:have-has4、一般现在时的句型转换:肯定句…否定句TheywatchTVeve
3、ryday.Theydon'twatchTVeveryday.ShewatchesTVeveryday.Shedoesn'twatchTVeveryday.一般疑问句及回答-DotheywatchTVeveryday?-Yes,theydo./No,theydon't.一DoesshewatchTVeveryday?-Yes,shedoes./No,shedoesn't.现在进行时1、定义:表示现在或现阶段正在进行或发生的动作。句中常有now,look,listen等词。如:Iamwashingclothesnow.Look!LiuTaoisclimbingthetree.Listen!Jan
4、eissinginginthemusicroom.2、构成:be动词(am/is/are+动词现在分词(Ving)3、动词现在分词构成:一般是在动词原形后加ing如:read-reading,drink-drinking,eat-eating,look-looking以不发音的e结尾的动词，去掉e，再加ing如:write-writing,make-making,ride-riding,take-taking以重读闭音节结尾，如末尾只有一个辅音字母，要双写这个字母，再加ing如:sit-sitting,swim-swimming,put-putting,run-running,stop-sto
5、pping,get-getting,begin-beginning,jog-jogging,forget-forgetting动名词其实就是动词的现在分词，它既有名词性质(可作主语)，又有动词性质(可带宾语)。如：AskingthewayMyhobbyiscollectingstamps.Heisgoodatskating.5、现在进行时的句型转换:肯定句否定句一般疑问句及回答-Isherunningnow?-Yes,heis./No,heisn't.Theyaremakingapuppet.Theyaren'tmakingapuppet.一Aretheymakingapuppet?-Yes,
6、theyare./No,theyaren't.一般过去时1、定义:表示过去某个时间里发生的动作或存在的状态。常和表示过去的时间状语连用，如:amomentago,justnow,yesterday,lastweek,thismorning等。如:Mybrotheroftenwenttoschoolbybikelastterm.Thewatchwasbesidethediaryamomentago.IwatchedthemoonandatethemooncakeslastMid-AutumnFestival.Jimwenttothesupermarketyesterday.2、构成:主语+动词的
7、过去式+其他3、动词过去式的变化规则:一般在动词原形末尾加ed如:play-played,listen-listened,look-looked结尾是e的动词，加d如:live-lived,like-liked,taste-tasted辅音字母+y结尾的动词，变y为i，再加ed如:study-studied,carry-carried,cry-cried末尾只有一个辅音字母的重读闭音节词，双写这个
