Unit3TreesandusSection2Grammar课件（2024）七年级英语下册

Unit3Treesandus主题范畴：人与自然主题群：环境保护子主题：热爱与敬畏自然，与自然和谐共生KeyquestionWhydoweneedtrees?understandwhattreesdoforus.identifyamazingfactsabouttrees.describewhatwecandotohelpprotectstrees.explaintherelationshipbetweentreesandhumans.Unitobjectives单元目标Ican:Tom,whatareyoudoingnow?Iamreadingabook.

LeadinWhataretheydoingnow?Theyareplayingbasketball.

Whatisthemandoingnow?Heissingingasong.

Whatarethechildrendoingnow?TheyarewatchingTV.

Iamreadingabook.Theyareplayingbasketball.Heissingingasong.TheyarewatchingTV.Thepresentcontinuous现在进行时LiNa:

HiWangJie.Whatareyoudoingnow?Areyouathome?WangJie:No,myparentsareaway,soI’mstayingwithmygrandmotherthisweek.I’mwatchingaTVprogrammeabouttrees.LiNa:Really?SuSuandIareworkingonourgroupproject.It’sabouttrees.Couldyouhelpus?WangJie:Sure,noproblem!Wecanmeetuptomorrowafterschool.LiNaistalkingtoWangJieonthephone.Readthedialogueandpayattentiontothewordsinbold.Weusethepresentcontinuoustoshowthatsomethingishappeningnow.Presentation①现在进行时态表示现在(说话瞬间)正在进行或发生的动作。②现在进行时态还可以表示当前一段时间内的活动或现阶段正在发生的事情。如:现在进行时的定义Whatareyoudoingnow?I’mwatchingaTVprogrammeabouttrees.No,myparentsareaway,soI’mstayingwithmygrandmotherthisweek.What’sthestructureofthepresentcontinuoustense?Iamreadingabook.Theyareplayingbasketball.Heissingingasong.TheyarewatchingTV.beamisare+v.ingThink现在进行时的结构Iamreadingabookinthelibrary.⭐肯定句:主语+am/is/are+V-ing+其它.Iamnotreadingabookinthelibrary.⭐否定句：直接在am/is/are后加not.现在进行时的句式—Areyoureadingabookinthelibrary?—Yes,Iam./No,I’mnot.一般疑问句及回答:问句，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。肯定回答:Yes,主语+be(be是要变化的，即am/is/are).

否定回答:No,主语+be+not.Whatareyoudoingnow?特殊疑问句：格式为：What+am/is/are+主语+doing?时间状语与现在进行时连用的时间状语：atpresent 目前；现在

atthemoment 此刻；现在rightnow 此刻；现在；立刻；马上

now 现在

提示语: look!/listen!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)Arethestudentscleaningtheclassroom?Yes,theyare./No,theyaren’t.Practice3.I’mplayingfootballintheplayground.(改为否定句)

I’mnotplayingfootballintheplayground.4.Tomisreadingbooksinhisroom.(改为一般疑问句)

IsTomreadingbooksinhisroom?主要动词现在分词例子大多数动词以不发音-e结尾的动词

附加：以发音-e结尾的动词以-ie结尾的动词一些以一个元音字母+一个辅音字母结尾的动词+ingfeel→feeling去e+ing+ingwrite→writingsee→seeing去ie+ying双写这个辅音字母+ingdie→dyingrun→running现在分词的构成方式Changetheverbsinto–ingform.Exercisethink __________tell __________sit __________come __________smile __________lie __________sing __________fight __________change __________make __________thinkingtellingsittingcomingsmilinglyingsingingfightingchangingmakingWedonotusuallyusetheverbsintheboxbelowinthepresentcontinuoustense.

Instead,

weusetheminthesimplepresenttense.believehear

likeprefersmell

understandhate

knowlovesee

realize

taste

want✔Iknowmydeskmate

well.✘Iamknowingmydeskmate

well.✔Myyoungersisterlikeseatingapples.✘Myyoungersisterislikingeatingapples.SpecialrulesareeatingfeelismovingiswaitingiseatingisgivingisenjoyingLook!Theyaretakingcareofthetree.Theyarewateringit.一、根据句意，用括号中所给单词的适当形式填空。1.Theboy_________(draw)apicturenow.2.Listen!Someboys__________(sing)intheclassroom.3.Mymother________(make)acakeatthemoment.4.What_____you________(do)now?isdrawingaresingingismakingaredoing5.Look!They__________(have)anEnglishlesson.6.They_____________(not,water)theflowersnow.7.Look!Thegirls__________(dance)intheclassroom.8.—Whatisourgrandmadoing?—She__________(listen)tomusic.arehavingarenotwateringaredancingislistening二、选择填空。1.Whatareyoudoing?I________noodles.A.eatB.caneatC.eatingD.ameating2.Wewant________thisbooknow.A.readingB.amreadingC.readD.toread3.Ourteacheris________aredsweater.A.puttingonB.putonC.wearingD.wear4.Thatboyisn’t________theteachernow.A.listenB.listensC.listeningD.listeningto5.It’seighto’clock.Jim’sfamily_______TV.A.iswatchingB.arewatchingC.watchD.towatch6.Mymotheris_______acake_______mybirthday.A.making,toB.making,forC.doing,toD.doing,for7.Letme_______thesebooksinthebox.A.