UNIT 1 The Changing World TOPIC 3 The world has changed for the better Section B--现在进行时.ppt

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1、UNIT1TheChangingWorldTOPIC3TheworldhaschangedforthebetterSectionB--现在进行时现在进行时主语+am/is/are+doing(动词+ing)表示某人正在做某事的时候用现在进行时。现在进行时怎么构成?什么时候用现在进行时?主语be动词行为动词(+ing)Iam/‘mdrawingapicture.HeSheItis/‘ssleepingintheroom.YouWeTheyare/‘rewatchingafilm.这种时态的句子由两种动词组

2、成。be-ingPresentcontinuoustense现在进行时直接在动词后面加ing。goinggoingdotalkwatchplayreadlookdoingtalkingwatchingplayingreadinglookingPresentcontinuoustense现在进行时Practice去e再加ing。comeingcominghavehavingwritewritingrideridinglivelivingdrivedrivingmovemovingPresentconti

3、nuoustense现在进行时Practice以重读、“辅元辅”结构结尾的动词需要双写最后一个字母再加-ing。swimmingswimmingjogjoggingsitsittingdropdroppingrunrunninggetgettingputputtingPresentcontinuoustense现在进行时Practice写出下列动词的现在分词sleepinvitechatlookwriteswimplaycomerunwaitpracticeshopstudyseevisitlielea

4、rntieinginginginginginginginginginginginglyingtyingtingmingningping1.直接加ing;2.去e加ing(除ee字母组合);3.双写加ing;4.改ie为y加ingbe-ingnot主语be动词行为动词(+ing)Iamdrawingapicture.notNegativesentences否定句HeSheItissleepingintheroom.not(isn’t)YouWeTheyarewatchingafilm.not(aren’t)

5、Questions一般疑问句将be动词放在句子开头成为一般疑问句。Yes,sheis./No,sheisn’t.Yes,theyare./No,theyaren’t.Cherryisridingabicycle.IsCherryridingabicycle?Theyarecooking.Aretheycooking?Questions特殊疑问句Questionswithquestionwords:Whatareyoudoing?Whyisthebabycrying?Whenarethechild

6、renleaving?Whereareyougoing?e.g.现在分词的构成1.直接加–ingeg:looklooking2.如果动词末尾有不发音的e，则去e加-ing3.以动词闭音节结尾，且末尾只有一个辅音字母的，应双写此字母，再加–ing。eg:sitsitting口诀教你学doing进行时很好记，be加动词-ing；直加双写去哑e，分词构成须仔细；别说be无词义，主语和它最亲密；变疑问be提前，否定not再后添；何时要用进行时look，listen，now标志。atpresent目前；现在att

7、hemoment此刻；现在rightnow此刻；现在now现在与现在进行时连用的时间状语Sheisreadingabookaboutherhero.Sheiswritingastoryaboutherhero.Thankyou~~