Unit3Grammar课件级英语下册

Unit3Treesandus

GrammarThepresentcontinuous行业PPT模板:///hangye/Icanunderstandthestructureandmeaningofthepresentcontinuoustense.LearningObjectiveBytheendofthelesson,Iwillbeableto...understandthestructureandmeaningofthepresentcontinuoustense.knowthesentencechangesinthepresentcontinuoustense.knowtherulesofformingVerb-ing.usethepresentcontinuoustensetofinishtheexercisecorrectly.行业PPT模板:///hangye/Lookandsay.Usingthestructure“be+Ving”LeadinTom,whatareyoudoingnowIamreadingabook.WhatisthegirldoingnowSheisplayingthepiano.行业PPT模板:///hangye/Lookandsay.Usingthestructure“be+Ving”LeadinWhataretheydoingnowTheyareplantingatree.WhatistheboydoingnowHeisstudying.行业PPT模板:///hangye/LeadinTheyarediggingahole.Heisstudying.Iamreadingabook.Sheisplayingthepiano.Thepresentcontinuous现在进行时Whattenseisusedinthesesentences行业PPT模板:///hangye/

PresentationLiNaistalkingtoWangJieonthephone.Readthedialogueandcirclethepresentcontinuousbelow.LiNa:HiWangJie.WhatareyoudoingnowAreyouathomeWangJie:No,myparentsareaway,soI’mstayingwithmygrandmotherthisweek.I’mwatchingaTVprogrammeabouttrees.LiNa:ReallySuSuandIareworkingonourgroupproject.It’sabouttrees.CouldyouhelpusWangJie:Sure,noproblem!Wecanmeetuptomorrowafterschool.行业PPT模板:///hangye/WhendothesethingshappenInthepast,present,orfutureWeusethepresentcontinuoustoshowthatsomethingishappeningnow.PresentationWhatareyoudoingnowI’mwatchingaTVprogrammeabouttrees.SuSuandIareworkingonourgroupproject.行业PPT模板:///hangye/Presentation一般现在时VS现在进行时1.Weplay

football

everyday

afterschool.2.He

cleans

hisroom

everyday.3.They

often

come

toChinaforavisit.1.Weareplaying

football.2.He

iscleaning

hisroom

now.3.They

arevisiting

China.

每天放学后我们都踢足球。我们在踢足球。他正在打扫房间。他每天都打扫房间。他们经常来中国观光。他们正在中国观光。一般现在时

表示习惯性或经常性的行为

现在进行时表示正在进行的行为行业PPT模板:///hangye/

Presentation现在进行时的含义1.现在进行时可以表示说话时正在进行或发生的动作。(1)HiWangJie.Whatareyoudoingnow嗨，王杰。你现在在做什么(2)Rightnow,sheiscookingdinner.此刻，她正在做晚饭。(3)Listen!TheyaresinginganEnglishsong.听！他们正在唱一首英文歌。★现在进行时常与now,

rightnow,

atthemoment等时间状语,或look，listen等词连用。行业PPT模板:///hangye/

Presentation现在进行时的含义2.现在进行时也可表示现阶段一直持续的动作，但说话时动作不一定进行，常带有thisweek,thesedays等时间状语。(1)I'mstayingwithmygrandmother

thisweek.我这周住姥姥家。(2)We

arenotworking

onafarmthesedays.这些天我们不在农场工作。(3)I'mwritingalongnovelthesedays.我最近在写一部长篇小说。行业PPT模板:///hangye/PresentationThinkWhat’sthestructureofthepresentcontinuoustenseIamreadingabook.Sheisplayingthepiano.They

arediggingahole.Heisstudying.主语be动词(am/is/are)V-ing①Weuseam

+ingformofaverbwiththesubject____.②Weuseis

+ingformofaverbwiththesubjects_____,_____,and____.③Weuseare

+ingformofaverbwiththesubjects____,_____,and____.Ihesheittheyyouwe现在进行时的结构行业PPT模板:///hangye/Presentation现在进行时的句式变化(1)肯定句:________________________________Iam

readingabook.主语+am/is/are+V-ing+其他.(2)否定句：_______________________ ①Iam

notwriting.

②SheisnotwatchingTV.

③Theyarenotstudying.主语+am/is/are+not+V-ing+其他.我正在看书。我没在写东西。她没有在看电视。他们没有在学习。Sheisn’twatchingTV.Theyaren’tstudying.isnot可以缩写为isn’t，arenot可以缩写为aren’t，但是amnot通常不缩写。行业PPT模板:///hangye/Presentation(3)一般疑问句:_____________________________肯定回答:______________________________否定回答:______________________________①-Ishereading-Yes,heis./No,heisn't.

②-Areyoulisteningtomusic-Yes,Iam./No,I’mnot.Am/Is/Are+主语+V-ing+其他？Yes,主语+am/is/are.No,主语+am/is/are+not.—他在读书吗—是的，他是。/不，他不是。—你在听音乐吗—是的，我是。/不，我不是。直接把am/is/are提句首,若原句有第一人称，把第一人称变成第二人称。行业PPT模板:///hangye/PresentationMymotheriscookingdinnerinthekitchen.(4)特殊疑问句：

_______________________________

WhereisyourmothercookingdinnerWhatisyourmotherdoinginthekitchenWhoiscookingdinnerinthekitchen疑问词+一般疑问句行业PPT模板:///hangye/Practice根据题目要求，完成下列句子。1.Theyaredoingthehouseworknow.(分别改成一般疑问句和否定句) Aretheydoingthehouseworknow Theyaren’tdoingthehouseworknow.2.Thestudentsarecleaningtheclassroom.(改为一般疑问句并作肯定和否定回答)ArethestudentscleaningtheclassroomYes,theyare./No,theyaren’t.行业PPT模板:///hangye/Practice3.I’mplayingfootballintheplayground.(改为否定句)I’mnotplayingfootballintheplayground.4.Tomisreadingbooksinhisroom.(改为一般疑问句)IsTomreadingbooksinhisroom行业PPT模板:///hangye/PresentationThinkHowtomakethe-ingformofaverb①一般在动词末尾加ing。read—drink—meet—readingdrinkingmeeting②以不发音字母e结尾的动词，去掉e,再加ing。write—make—have—writinghavingmaking行业PPT模板:///hangye/Presentation③以ie结尾的动词，变ie为y,再加ing。lie—die—lyingdying④一些以一个元音字母+一个辅音字母结尾的动词

双写最后一个辅音字母，再加ing。get—swim—sit—gettingsittingswimming行业PPT模板:///hangye/Presentation情况

变形示例一般情况

加-ingwork-working,listen-listening,study-studying以不发音字母e结尾去e,再加-ingwrite-writing,make-making,hopehoping重读闭音节结尾的动词

双写词尾辅音字母加-ingrun-running;put-putting;begin--beginningswim-swimming;cut-cutting;travel-travelling以ie结尾

变ie为y再加-inglie-lying;tie-tying;die-dying行业PPT模板:///hangye/ExerciseChangetheverbsinto–ingform.think __________tell __________sit __________come __________smile __________lie __________sing __________fight__________change__________run __________thinkingtellingsittingcomingsmilinglyingsingingfightingchangingrunning行业PPT模板:///hangye/Presentation★一些表示感官、认知、情感类的动词常用于一般现在时，不用于现在进行时(1)Iknowtheanswernow.Iamknowingtheanswernow.

Sheislikingthispoem.(2)Shelikesthispoem.行业PPT模板:///hangye/Presentation不用现在进行时的动词行业PPT模板:///hangye/Presentation1、存在状态类动词be,stay,remain等2、表示“拥有，属于”have,own,belongto,possess,consistof等2、心理状态和情感类动词like,dislike,love;hate等3、认知类动词think,believe,want,mind,know,understand,wish,agree3、系动词类seem,taste,turn,remain,appear,look,sound等4、瞬间动词类accept,refuse,receive,decide,promise等不用现在进行时的动词行业PPT模板:///hangye/Presentation一般来说，瞬间动词不能用现在进行时表达，但是像come，go，leave,arrive，start，fly

等瞬间动词用现在进行时表达时常与表示将来时的时间状语连用，表示将要发生的动作。例如:TheyareleavingforAustraliatomorrowafternoon.Iamcoming,Mum!瞬间动词的用法行业PPT模板:///hangye/PracticeChenLiismakingavideoabouthowtreesprotectthemselvesfromenemies.Helphercompletethevideoscriptwiththecorrectformoftheverbsinbrackets.areeatingamfeelingismovingiswaiting行业PPT模板:///hangye/Practiceiseatingisisenjoyinggiving行业PPT模板:///hangye/PracticeTreesareveryimportantinourlives.They

(provide)uswithfoodandoxygen.Inthepast,people____(cut)downmanytrees.This____(cause)alotofenvironmentalproblems.Theair________(become)worseandsomeanimals____(lose)theirhomes.Now,people________

(become)moreawareoftheimportanceofprotectingtrees.Look!Somevolunteers______(dig)holesand____(put)thetree