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1、一般现在时态一、一般现在时的定义一般现在时表示现在经常反复发生的动作，存在的状态或习惯性的动作的时态。二、一般现在时的结构一般现在时用行为动词的原形，但第三人称单数作主语时，动词的词尾要加-s或-es。现在以连系动词be和行为动词read为例，对一般现在时的肯定句、否定句、疑问句及其简略答语的构成以表格形式加以说明：动词肯定句否定句beIam…Iamnot…You/We/Theyare…You/We/Theyarenot…He/She/Itis...He/She/Itisnot…readI/We/You/Theyread…I/W
2、e/You/They/donotread…He/She/Itreads…He/She/Itdoesnotread…动词疑问句简略答语（肯定）简略答语（否定）beAmI…?Yes,youare.No,youarenot.Areyou…?Yes,Iam/weare.No,Iam/wearenot.Arewe…?Yes,we/youare.No,we/youarenot.Arethey…?Yes,theyare.No,theyarenot.Ishe…?Yes,heis.No,heisnot.Isshe…?Yes,sheis.No,sh
3、eisnot.Isit…?Yes,itis.No,itisnot.DoI/we/theyread…?Yes,you/we/theydo.No,you/we/theydonot.readDoeshe/she/itread…?Yes,he/she/itdoes.No,he/she/itdoesnot.连系动词be的各种形式常与代词或not缩写成一个词。助动词do，does一般只有与not缩写。联系动词be缩写形式如下肯定缩写否定缩写IamI’mIamnotI’mnotYouareYou’reYouarenotYou’renot/Yo
4、uaren’tHeisHe’sHeisnotHe’snot/Heisn’tSheisShe’sSheisnotShe’snot/Sheisn’tItisIt’sItisnotIt’snot/Itisn’tWeareWe’reWearenotWe’renot/Wearen’tTheyareThey’reTheyarenotThey’renot/Theyaren’t动词donot的缩写形式为don’t，doesnot的缩写形式为doesn’t。三、动词加-s或-es（动词第三人称单数）当主语是第三人称单数时，谓语动词需加-s或-es
5、1．一般在词尾加–s例：work—worksleave---leavesswim---swims2．以字母s，x，ch，sh或o结尾的词加-es例：pass---passesfix---fixesteach---teachesdo---does3．以辅音字母加y结尾的词，先变y为i再加-es例：study---studiescarry---carriesfly---fliescry---cries四、一般现在时的用法1．表示经常或习惯性的动作。常与often（经常）,always（总是）,sometimes（有时）,everyd
6、ay（每天）,onSundays/Mondays等表示频度的时间状语连用。一般现在时的时间状语有：today,often,sometimes,always,usually,everyday(week,month,year,…),thisyear,onceaweek(month,year,…)一周（月，年）一次例句：Igetupat6o’clockeveryday.Heoftengoestoschoolbybike.2．表示客观事实，普遍真理。例句：Twoandtwoisfour.二加二等于四。Theearthmovesaroun
7、dthesun.地球绕着太阳转。练习：一、写出下列动词的第三人称单数形式posteatstopjumpgolikevisitpassrisereadridehavegivewriteswimstudywatchflyteachdo二、单项选择()1._____youhaveabook?ADoB.AreC.IsD.Have()2.DoesLiLeiliketowatchTV?______________.A.Yes,helike.B.No,hedoesn’t.C.Yes,he’dlike.D.No,helikes.()3.Shed
8、oesn’t______herhomeworkintheafternoon.A.doingB.todoC.doesD.do()4.How____Mr.Smith______toEngland?A.do,goB.is,goC.does,goD.does,goes(
