语法专题四：时态1.现在时(Presenttenses)时态结构与用法一般现在时结构：do/does/be(am/is/are)用法：1.表示现在的习惯动作、状态。2.表示客观规律、真理；特征、性格等。3.用于标题，小说、剧本、图片等中的情节介绍。4.用于时间、条件、让步状从中，表将来。5.表示按计划、规定的时间发生的动作，如时刻表等。现在进行时结构：be(am/is/are)doing;或be+adv./prep.(如：in,on,under等)用法：1.表示现在、现阶段正在发生、进行的动作。2.常与go,leave,come,arrive,stay,move等连用，表示将来的动作。3.与always,forever等连用，表示动作的反复，含厌倦或赞赏的意思。注意：1.表示感觉、心理、结果性的动词一般不用于进行时。2.常见表进行的副词、介短：inprogressinoperationonshow现在完成时结构：have/hasdone用法：1.过去发生且结束，但对现在造成影响。2.过去发生且持续到现在。3.在以下两个句型中，其从句要求用现在完成时：It(This)isthefirst(last,second,third,…)timethat…It(This)isthebest(worst,mostinteresting,…)+n.+that…完成进行时结构：have/hasbeendoing用法：过去发生，目前还在进行，且可能持续下去，强调动作的延续性。巩固练习：1.I’vewonaholidayfortwodaystoFlorida.Imymum.A.amtakingB.havetakenC.takeD.willhavetaken2.Becausefarmland______quickly,thegovernmentisconsideringsolvingtheproblem.A.isbeinglostB.islostC.islosingD.loses3.JohnandI______friendsfor8years.Wefirstgottoknoweachotherataparty.Butwe______eachotheracoupleoftimesbeforethat.A.hadbeen;havebeenB.havebeen;havebeenC.hadbeen;hadseenD.havebeen;hadseen4.DadwillcometoseemewhenI______thetrainingcourse.A.willhavefinishedB.willfinishC.arefinishingD.finish5.---Didhenoticeyouentertheroom?---Idon’tthinkso.He______totheradiowithhiseyesshut.A.listenedB.waslisteningC.haslistenedD.hadlistened6.We______ournewneighborsyet,sowedon’tknowtheirnames.A.don’tmeetB.won’tmeetC.haven’tmetD.hadn’tmet7.Ihavetogotoworkbytaxibecausemycar______atthegarage.A.willberepairedB.isrepairedC.isbeingrepairedD.berepaired8.---______leaveattheendofthemonth.---Idon’tthinkyoushoulddothatuntil______anotherjob.A.I’mgoingto;you’dfoundB.I’mgoingto;you’vefoundC.I’ll;you’llfindD.I’ll;you’dfind19.Iwon’ttellthestudenttheanswertothemathproblemuntilhe______onitforanhour.A.hasbeenworkingB.willhaveworkedC.willhavebeenworkingD.hadworked10.Thefatheraswellashisthreechildren______skatingonthefrozenrivereverySundayafternooninwinter.A.isgoingB.goC.goesD.aregoing11.I______inLondonformanyyears,butI’veneverregrettedmyfinaldecisiontomovebacktoChina.A.livedB.waslivingC.havelivedD.hadlived12.Thismachine______.Ithasn’tworkedforyears.A.didn’tworkB.wasn’tworkingC.doesn’tworkD.isn’tworking13.Myfriend,who______ontheIOCallhislife,isretiringnextmonth.A.servedB.isservingC.hadservedD.hasserved14.Lookatthetimetable.Hurryup!Flight4026______offat18:20.A.takesB.tookC.willbetakenD.hastaken15.---Idon’tsupposethepoliceknowwhodidit.---Well,surprisinglytheydo.Amanhasbeenarrestedand______now.A.hasbeenquestionedB.isbeingquestionedC.isquestioningD.hasquestioned16.SofaritisthebestcrosstalkI______.A.heardB.haveheardC.willhearD.hadheard17.---Iwillcometoattendyourlectureat10:00tomorrow.---I’msorry,butbythenmylecturewillhaveendedandI______myguestsinmyoffice.A.isbeingmetB.willmeetC.willbemeetingD.willhavemet18.---Hi,Tracy,youlooktired.---Iamtired.I______thelivingroomallday.A.paintedB.hadpaintedC.havebeenpaintingD.havepainted19.Withthedevelopmentofscience,morenewtechnology______tothefieldofIT.A.hasintroducedB.isbeingintroducedC.isintroducedD.wa...
