牛津深圳版英语七年级下册Unit4《Save-the-trees》(Grammar)课件

Unit4GrammarListeningtoasongtofillintheblanks.Singing:What(1)____you_____?(2)____________________________________What(3)_____you______?_(4)_____________________cooking,cooking,cookingWhat(5)_____you______?(6)____________________en,yummywhatareyoudoing?_(7)________________________aredoingI’mwatchingTVI’mwatchingTVaredoingI’mcooking.aredoingI’meating,eating.I’mwashingmyhands.ThePresentContinuousTense现在进行时基本结构be+V-ing(am,is,are)Lookatthepicturestoanswerthequestions.Henryisdoinghishomework.WhatisHenrydoing?Sheislisteningtomusic.Whatisshedoing?Whataretheydoing?Theyarereadingbooks.Heisdoinghishomework.Sheislisteningtomusic.Theyarereadingbooks.Whataretheydoing?Whatishedoing?Whatisshedoing?肯定句否定句一般疑问句特殊疑问句结构?现在进行时句型肯定句：主语+be现在分词+其它Sheisswimminginthesea.否定句：在be动词后加notSheisnotswimminginthesea.一般疑问句：把be动词提前Issheswimminginthesea?特殊疑问句：特殊疑问词+一般疑问句Whatisshedoinginthesea?Whereissheswimming?Sentencepatterntransformation句型转换变否定句变一般疑问句变特殊疑问句变否定句Mydadisfishingnow.Mydadisn’tfishingnow.Theyareeatingsomehotdogs.Theyarenoteatinganyhotdogs.变否定句变一般疑问句Tomisplayingbasketballnow.IsTomplayingbasketballnow?TheyarespeakinginEnglish.AretheyspeakingEnglish?变一般疑问句变特殊疑问句Samiseatinganapple.WhatisSameating？变特殊疑问句Theyaredrinkingwater.Whoaredrinkingwater？现在进行时定义定义：现在进行时态表示现在(说话瞬间)正在进行或发生的动作,翻译成正在做某事。Look!Thatdogisbarking.Heislisteningtotheradionow.Listen!Sheissinging.thesedaysatthistimeatthemoment现在进行时的标志词look,now,listen2.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发生的事情，翻译成一直在做某事。Weareworkingonafarmthesedays.Iamwritingabookatthistime.TheyarestayingatPeter’shouseatthemoment.Let’splayagame:Whoistheguessingchampion?Arethey+v-ing…?Isit/he/she+v-ing…?Isthepig________?Yes,itis.No,itisn’t.Whatisitdoing?Itis…skatingIsthegirl…?Yes,sheis.No,sheisn’t.Whatisshedoing?Sheis…eatingnoddlesIstheboy…?Yes,heis.No,heisn’t.Whatishedoing?Heis…playingtheguitarArethey…?Yes,theyare.No,theyaren’t.Whataretheydoing?Theyare…dancingHowtochangetheformsofpresentparticiple.现在分词的变化规则现在分词变化规则直：直接加ing（do---doingtalk---talkingstudy---studyingplay---playingfish–finshingthink-thinking）去：去末尾不发音的e加ing（leave---leavinghave---havingdance----dancingride----ridingcome—comingmake-making）双：重读闭音节双写尾字母加ing（sit---sittingforget---forgettingrun---runningbegin---beginningswim—swimmingput-putting）改：把ie变为y加ing（die-dyinglie---lying躺tie-tying系，栓）isdoingisplayingareplayingisfishingisswimmingarelyingiseatingisplayingamtalkingWecannotusesomeverbsinthepresentcontinuoustense.?现在进行时的特殊用法：D.有些动词（状态动词不用于进行时态）4.表示拥有的动词want,belongto（属于）1.表示知道或了解的动词:believe,know,understand2.表示喜爱或不喜爱hate,like,love,prefer3.表示感官的动词seesmellsoundtasteisringingknowamthinkingpreferGrammarexercisesmellsareeatingameatingDowantGrammarexercise•注意：•come，go，leave，more，arrive•进行时表将来Summary现在分词变化：直，去，双，改状态动词不能用于进行时eat--begin--leave—lie—cry--eatingbeginningleavinglyingcryinguse--usingstop--stoppingstudy--die--put--have--wait--get--studyingdyingputtinghavingwaitinggetting现在分词变化形式抢答：dig--diggingcarry--carryingYouactIguess你比划我来猜:RuleswimmingbrushingteethdancingwashinghairreadingbookslisteningtomusicplayingthepianoStudentA:UsebodylanguagetoactoneofsixactionsStudentB:Toguess,e.g.Ask:Isshe/hedancing?Otherstudents:AnswerYes,she/heisorNo,she/heisn’tCorrectthemistakes(改错)Look!SimonandIhavingabirthdayparty.Therearemanyfriendsatourparty.LucyandLilyissitingonthefloor.TheyareplaywithMary.Someofmyfriendsissinginganddanceing.________arehaving_________aresitting_____playing__are___________dancing