初一英语介词练习题

介词练习题1()1ChildrengetgiftsChristmasandtheirbirthdays.A.on;onB.at;onC.in;inD.in;on()2-Thereisnothingtomorrowafternoon,isthere?-No.Wecanhaveagameoftabletennis.A.onB.inC.outD.up()3AlotofstudentsinourschoolwerebornMarch,1981.A.inB.atC.onD.since()4tiesuddenlyreturnedarainynight.A.onB.atC.inD.during()5MygrandfatherwasbornOct.10,1935.A.onB.inC.atD.of()6Thetrainisstartingfiveminutes.A.inB.atC.forD.still()7Mikedoeshisexercisesseventheevening.A.on;toB.at;inC.by;ofD.at;on2()1Thepopulationoftheworldhasgrownveryfastfourhundredyears.A.forpasttheB.inthepassC.inthepastD.forpast()2Wereturnedtoourhometown.A.nextweekB.inthelastweekC.lastweekD.foraweek()3Greatchangeshavetakenplace.A.inthelastfewyearB.inthelastfewyearsC.lastyearD.onthelastyear3()1ChildrenwakeupveryearlythemorningofChristmasDay.A.inB.onC.forD.at()2acoldwintermorning,Imetherinthestfeet.A.InB.OnC.AtD.For()3Ithappenedtobeverycoldthemorningofoursportsmeet.A.atB.onC.withD.of()4Whydidyougetupsoearlythismorning.A.onB./C.atD.in4()1HewenttoShanghaiSeptember3,1991andcamebackacoldmorninglastyear.A.in;onB.on;inC.on;onD.in;ia()2LucywasbornthenightofMay12,1984 A.onB.inC.atD.to()3MrsBrowncametoChina1996.A.onB.ofC.to,D.in()4themorningofNovember20,1915,theworkerscametoChicagotoshowtheirmourningJoeHill.A.On;toB.In;of.C.On;for,D.At;for()5AnnmovedHangzhouSeptember,1992.A./;iniB.to;inC.to;onD,in;in()6Theystartedoffanautumnafternoon.A.duringB.atC.inD.on5()1Heoftengoesschoolsixthirtythemorning.A.for;to;inB.to;atinC.to;for;atD,for;at;to()2HearrivedShanghai9:30March5.fA.at;in;atB.to;on;atC.in;on;atD.in;at;on()3TheEnglishteachertoldmetogettherehalfpastten.A:inB.atC.onD.of()4Thechildrengetup6o'clock.A.atB.onC.duringD.in6()1Thedoctorworkedfivehoursarest.A.for;withB.on;withoutC.about;havingD.for;without()2IworkedontheproblemalongtimeandIworkeditoutmyselflast.A.for;by;atB.in;with;onC.on;by;inD.for;for;atthe()3Anewfactorywillbesetup:ayear.八'lotaeA.forB.inC.afterD.on()4Twoyearshebegantowriteanotherstory-book.A.afterB.later;C.inD.late()5Wewillfinishthepicture aday.A.inB.onC.afterD.on()6Theworkershadbeenstrikealmostamonth.A.on;inB.at;inC.on;forD.on;during()7MrBrownhadlainthegroundfourhoursbeforetheyfinallyfoundhim.A.on;forB.at;inC.on;afterD.in;during7()1Theteacheriscomingbackanhour.A.afterB.forC.inD.before()2Shelivedinthemountainvillagetheyears1940-1950.A.betweenB.duringC.inD.since()3MissWangwillcometoBeijingtwodays.A.afterB.inC.onD.before()4TheAmericanCivilWarlastedfouryearsbeforetheNorthwontheend.A.byB.atC.inD.on8()7MaryhadfinishedherhomeworkthetimeIgothome.A.untilB.byC.atD.when()2Westayedatthelabourteacherreturned.A.tillB.byC.duringD.while()3Theydidn'tleavethestationtheygetonthetrain.A.untilB.byC.afteryD.at91Don'tworry.Hewillreturn.A.beforelongB.longbeforeC.longlongagoD.longagoTherelivedanoldman,fishingatsea.A.longbeforeB.beforelongC.longtimeagoD.soonItwasnottheycameback.A.longbeforeB.beforelongC.longtimebeforeD.longafterIwastoldthathisunclehadgonetoFrance.longbefore-B.shortlyafterC.beforelongD.longago10()1Tomgetsupatfiveinthemorning.A.SometimeB.SometimesC.SometimeD.Sometimes()2Irememberwemeteachotherlastyear.A.Sometime'B.sometimesC.sometimeD.sometimes()3MaryandIhavebeentotheGreatWall,.A.sometimeB.sometimeC.sometimesD.sometimes()4HestudiedEnglishforinLondon,andthenhewenttoAmerica.A.sometimesB.sometimenewsometimeB.sometimes11()1Idon'tliketositTom'sright.Iwouldliketositthebackrow.A.on;inB.in;onC.on;atD.at;on()2Thereisabrookredflowersandgreengrassbothsides.A.ofwithB.with;onC.of;atD.with;in()3Therearemanytreesoftheroad!Andofthetreesisgrowinglargerandlarger A.onbothside;anumberB.oneachsides;anumberonbothsides;thenumberD.oneveryside;thenumber12()1Theplaneisflying.A.intheskyB.in.theairC.inspaceD.insky()2Thereisasweetsmell.A.intheairB.intheopenairC.intheskyD.inthespace()3Weheldaninterestingparty.A.intheairB.intheskyC.intheopenairD.inspace()4Seenfrom,theearthappearstobeabigblueball.A.thespaceB.spaceC.aspaceD.thisspace13()1TomsitstheclassroomwhileJohnsitstheroom.A.infrontof;atbackofB.inthefrontof;atthebackofC.infrontof;atthebackofD.inthefrontof;atbackof()2Lucysitsthethirdrow,Jim'sleft.A.on;onB.in;atC.at;inD.in;on()3JiangsuistheeastofChina,butJapanistheeastofChina.A.to;inB.in;to.C.on;toD.to;on14()1.-CanIlookupawordyourdictionary?-Ihaven'tgotme.A.into;aboutB.in;withC.at;inD.on;on()21likemooncakesmeatthem.A.in;onB.with;onC.in;theD.with;in()3Whenyouaretroublepleaseaskhelpus.A.in;fromB.in;forC.on;fromD.on;of()4Theshopkeepersaidtheyhadsoldouttheshoesyoursize.A.aboutB.inC.toD.of()5Isawhimhurryatthemoment.A.inaB.inC.onD.ona15()1Heputupamapthebackwallbecausetherewasaholeit.A.on;onB.at;inC.on;inD.on;at()2Thereisadoorthewall."ta人ncA.onB.toC.ofD.in()3ThiskindofVCDismadeChina..A.inB.fromC.atD.on()4Anymaneyeshisheadcanseethathe'sexactlylikearope.A.with;onB.with;inC.on;withD.in;with16()1Therearesomebirdssingingthetrees.A.inB.onC.atD.from()2Don'treadthesun.It'sbadyoureyes.A.in;toB.under;forC.with;toD.in;on()3Thewomanabluedressismyteacher.A.inB.onC.ofD.at()4Therearesomanyapplesthattree.A.inJB,onC.at,D.from17()1Theboatispassingthebridge.A.throughB.belowC.underD.across()2Twoplanesareflyingthecity.A.throughB.over,C.on,D,below()3Wecanseeariverrunningtotheeastthehill.A.underB.belowC.overD.on()4Doyouseethekitethebuilding.A.overB.crossC.onD.above18()1TheUnitedStatesisthesouthofCanadaandtheeastofJapan.A.to;inB.on;toC.in;besideD.at;on()2Myhometownliesthecity.Ioftengotothecitybybike.A.50milesintheeast;HoweverB.totheeast40milesof;ButC.intheeast45milesfrom;ButD.35mileseastof;However()3Themanstoodthewindow,watchingtheboysplayingoutside.A.inB.byC.withD.to()4JapanliestheeastofChina.A.onB/toC.inD.with19()1Isthestreettoonarrowforthebustogo?A.throughB.acrossC.onD.in()2Amothercamelwaswalkinghersonthedesert.A.without;alongB.with;throughC.nextto;passD.beside;through()3Theriverrunsthecity.A.acrossB.throughC.overD.from()4Ittookusoveranhourtowalkthisstreet.A.fromB.throughC.overD.across20()1UncleWangarrivedNo.14MiddleSchoolhalfanhourago.A.atB.inC.,to人D./()2Didyourfriendsendyousomethingtheendoflastweek?A.atB.byC.inD.to()3Themonumentthoseheroesstandsthefootofthemountain.A.of;atB.to;onC.for;byD.to;at()4Myunclelives88BeijingStreet.A.toB.ofC.atD.on()5Theyarewaitingabusthebusstop.A.for;inB.on;atC.with;atD.for;at21()1Woodisoftenmadepaper.A.byB.fromC.ofD.into()2researchtheuniversescientistshaveputalotofinformationcomputers.A.With;over;atB."On;at;toC.In;about;intoD.For;with;through()3;Whenapieceoficeistakenawarmroom,itgetssmallerandsmalleruntiltheenditdisappearscompletely.A.in;inB.outof;atC.into;inD.to;by()4Awomanfelltheboatthewater.A.off;intoB.at;belowC.down;underD.away;in22()1Thetablesintherestaurantaresoclosetogetherthatthere'shardlyanyroomtomovethem.A.amongB.betweenC.inthemiddleofD.atthecentreof()2Englishiswidelyusedforbusinessdifferentcountries.A.betweenB.toC.forD.on()3Isthereanydifferencethesetwosentences?A.forB.inC.amongD.between()4Wevisitedhimathisworkplacetheyoungtreesandaskhimabouthiswork.EA.inB.amongC.betweenD.at()5ThereisthedifferenceChinesefoodandAmericanfood.A.fromB.atC.betweenD.by()6Thepolicestationistheclothingshopthepostoffice.A.between;andB.among;andC.near;ofD.on;right()7Heisthegreatestscientistsintheworld.A.amongB.betweenC.inD.of23()1Thereisabook-storeourhouse.A.atB.throughC.acrossD.near()2Ourheadmastershowedthevisitorsourschool.A.toB.forC.around-;D.near()3Themoonisthetotheearth.A.closedB.nearC.nearestD.close24()1WehaveclasseseverydaySunday.A.besideB.besidesC.exceptD.exceptfor()2Nobodyknewitme.A.butB.besideC.besidesD.without()3Whatdoyouspendyourtimeonworkandstudy?A.exceptB.besidesC.butD.without()4DoyouknowanyotherforeignlanguageEnglish.A.withoutB.besideC.besidesD.except()5Weneedfifteenmorepeoplethetwentyofustodothejob.A.besidesB.andC.exceptD.without()6NooneknewwhereMrSmithlivedhisdaughter.A.besidesB.andC,onlyD.except25()1thehelpoftheteacher,Tomhasmaderapidprogresshisstudies.A.For;atB.Of;forC.By;onD.With;in()2Thechildrenareinterestedthissubject.A.toB.withC.inD.at()3HismotheroftenhelpshimEnglishsohedoesbetterEnglishthanothers.;A.with;inB.on;inC.in;withD.with;at()4I'velostmyinterestphysics.A.inB.onC.atD.for()5HedroveawaythedirectionofLondon.A.inB.atC.toD.for()6Theletterwaswrittenink.A.withB.inC.byD.at26()1themoney,sheboughtanewcoatherfather.A.With;forB.With;toC.For;withD.To;with()2WeiHuagetsonwellherclassmates.A.withB.inC.toD.at()3Thereissomethingwrongmybike.A.atB.inC.onD.with()4Theyarefillingtheirbagsbooksandotherthings.A.inB.withC.ofD.by()5Whentheteacherheardustalkinginclass,hewasveryangryA.toB.withC.forD.of()6WeusuallycovertheChristmastreescolourlights.A.inB.useC.forD.with27()1-Hissuddendeathsurprisedhiswife.-Itwassobad.Hiswifewassurprisedhisdeath.A.byB.withC.atD.on()2Don'tlaughhim,heonlymadeasmallmistake.A.atB.toC.aboutD.over()3Theboycriedoutthetopofhisvoice.A.atB.inC.onD.to28()TWeChinesepeopleareallourmotherland.A.famousforB.proudofC.busywithD.goodat()2Thebeautifulbottlewasmadeglass.A.fromB.inC.ofD.by()3ThisisamapChina.A.inB.atC.ofD.on()4Agroupboysandgirlsaredancinginthepark.A.withB.ofC.forD.to29()1TheyaregettingreadyflyEnglandtheirholiday.A.for;to;toB.to;to;forC.for;for;toD.to;to;to()2Whatdidyouhavebreakfast?A.atB.asC.forD.about()3Theywereinvitedtoanimportantballthefirsttimetheirlives.A.for;inB.at;inC.on;forD.in;with()4Tomalwayscomeslateschool.A.at.B.insideC.toD.for()5MrSmithcaughtholdBobandsaid,"Thisisagoodlessonyou.A.of;forB.for;ofC.of;ofD.for;for()6Theshopclothesistherightsidethestreet.A.of;at;besideB.for;on;atC.for;on;ofD.of;in;of参考答案：1.1-7BAAAAAB2.1-3CCB3.1-4BBBB4.1-6CADBAD5.1-4BDBA6.1-7BABBACA7.1-4CBBC8.1-3BAA9.1-4AAAATOC\o"1-5"\h\z1-4 B A D C1-3 A B C1-4 A A C B1-3 B D B1-5 B D A B A1-4 C D A B1-4 A A A B1-4 C B B D1-4 B B B B1-4 A B B B1-5 A A D C D1-5 D C C A1-7 B A D B C AA1-3 D C C1-6 C A B C A D1-6 D C A A A B1-6 A A D B B D1-3 C A A1-4 B C C B1-6 B C A C A C英语共有十六种时态,其表现形式如下（以study为例）一般时 进行时 完成时 完成进行时壬现在study bestudying havestudied havebeenstudying过去studied bestudying hadstudied hadbeenstudying将来willstudywilbestudying willhavestudied willhavebeenstudying过去将来wouldstudywouldbestudyingwouldhavestudied wouldhavebeenstudying时态（Tense）是表示行为、动作和状态在各种时间条件下的动词形式。因此,当我们说时态结构的时候,指的是相应时态下的动词形式。一般现在时用法：A）表示现在发生的动作、情况、状态和特征。B）习惯用语。C）经常性、习惯性动作。例：Healwayshelpsothers.（他总是帮助别人。）D）客观事实和普遍真理。尤其要注意，如果前后文不是一般现在时，则无法保持 主句、从句时态一致。E）表示一个按规定、计划或安排要发生的动作，（仅限于某些表示“来、去、动、停、开始、结束、继续”等的动词）可以与表示未来时间的状语搭配使用 。常见的用法是：飞机、火车、轮船、汽车等定期定点运行的交通方式。例：Thenexttrainleavesat3o'clockthisafternoon.（下一趟火车今天下午3点开车。）Howoftendoesthisshuttlebusrun?（这班车多久一趟？）

F）在时间和条件状语从句里经常用一般现在（有时也用现在完成时）表示将来事 情。例：Whenyouhavefinishedthereport,Iwillhavewaitedforabout3hours.（等你完成这份报告的时候，我就已经等了将近3个小时了。）现在进行时（bedoing）用法：现在正在进行的动作。现在完成时（havedone）用法：A）表示动作至1|现在为止已经完成或刚刚完成。例：Iboughtanewhouse,butImyoldoneyet,soatthemomentIhavetwohouses.A)didn'tsellB)soldC)haven'tsoldD)wouldsell答案是C）haven'tsoldoB）表示从过去某时刻开始,持续至1|现在的动作或情况.并且有可能会继续延续下去。此时经常用延续性动词。时间状语常用since加一个过去的时间点,或for加一段时间,或by加一个现在时间。例：GreatasNewtonwas,manyofhisideastodayandarebeingmodifiedbytheworkofscientistsofourtime.aretochallengemaybechallengedaretochallengemaybechallengedarechallenging全句的意思是：“虽然牛顿是个伟大的人物，但他的许多见解直到今天还在受到挑战，并且被现代科学家的工作所修正。"challenge是及物动词，在本句中应当是被动语态；其动作延续到今天，所以要用现在完成时态。可见答案是C）havebeenchallenged。A）aretochallenge和D）arechallenging都是主动语态，不可能是答案。B）maybechallenged虽然是被动语态，但意思与全句内容不合，所以不对。C）表示发生在过去，但对现在仍有影响的动作或情况。通常用点动词.如：arrive,begin,find,give,lose例：Johnhasbrokenhisleftleg.（约翰摔断了左腿。）注意事项：A）现在完成时是联系过去和现在的纽带。现在完成时和过去时的区别在于：现在完成时强调动作的动态,或受动态的影响，是动态的结果,对现在有影响：过去时只表示过去的某个具体时间里发生的动作,与现在没有联系。例：Heworkedinthathospitalfor8years.（他曾经在那家医院工作了8年。这只是讲述一个过去的事实，他现在已经不在那家医院了。）Hehasworkedinthathospitalfor8years.（他已经在那家医院里工作了8年。表示他从过去开始工作，一直工作到现在，现在仍在那家医院工作。）B）因为含有化「加一段时间或since加一个时间点这样的时间状语的完成时，有动态和延续性的特点,所以不能使用终端动词或瞬间动词。例：Mysisterhasbeenmarriedfor5years.（过去分词做表语表示状态，可以延续）Mysisterhasmarried.Don'tdisturbher.（终端动词）C）在"计》$isthefirst/second/third timethat ”句型里要求用完成时。^：ThisisthesecondtimethattheproductsofourcompanyhavebeenshownintheInternationalExhibition.（这是我公司产品第二次参加国际展览会。）D）句型"Itis/hasbeen……since"所使用的两种时态都正确。例：Itis/hasbeen10yearssinceIlastsawhim.（从我上次见到他以来已经10年了。）E）在"nosoonerthan"、"hardly/scarcely when"、"before"、"priorto"等句型中，主句要求完成时。例：Ihaven'tmetthatprofessorpriortotoday.（以前我从未见过那位教授。）4.现在完成进行时（havebeendoing）用法：表示某一动作开始于过去某一时间，延续或重复地出现至今,或将继续延续至将来。例：Wehavebeenworkingonthisprojectforoveramonthnow.(到目前为止，我们一直在处理那个项目，已经花了一个多月时间了。)注意事项：与现在完成时相比，现在完成进行时更强调：在从过去到现在的时间里，动作或状态一直持续或一直反复出现。例：Itseemsoilfromthispipeforsometime.We'llhavetotakethemachineaparttoputitright.A)hadleaked B)isleakingC)leaked D)hasbeenleaking从本题上下文看，这两个句子的意思是：“看来，这个管道漏油已有一段时间了，我们将不得不拆卸机器排除故障。”第二句表示将要采取的措施。第一句动作发生在第二句之前，并且延续到现在为止仍在继续。因此，空格中需用现在完成时或现在完成进行时。D)hasbeenleaking是现在完成进行时，因此是本题的答案。有11%的考生误选了B)isleaking,由于本句有时间状语forsometime,表示谓语动作延续，谓语不能用现在进行时，必须用和完成时有关的时态。有些考生误选了①leaked或A)hadleaked。是因为他们没有注意到本题第二句是一般将来时，所以第一句的谓语不能用过去时或过去完成时。5.一般过去时用法：A)表示过去某个时间发生的动作或情况。B)表示过去习惯性动作。特别是由would/usedtodo表达的句型，本身表示的 就是过去时。例：Theoldmanwouldsitonabenchinthequietparkandlookatothersforhourswithoutdoinganythingortalkingtoanybody.(老人过去常常坐在宁静的公园里的一条长椅上，看着其他的人，一坐就是数个小时，什么也不干，也不和任何人交谈。)Heusedtovisithismotheronceaweek.(他以前总是每周看望一次他的母亲。)C)有时可代替一般现在时，表达一种婉转、客气、礼貌、商量的语气。例：IwantedtoaskyouifIcouldborrowyourcar?(我想向您借车用一用，可以吗？)Wouldyoumindmysittinghere?(您介意我坐在这里吗？)注意事项：A)注意时间状语的搭配。一般过去时的时间状语应该是表示过去某个时间的词或词组,如：yesterday,lastmonth,in1999,twodaysago等，绝对不可与recently,inthepast10years,thismonth等连用，因为这样的时间状语都与现在有关系,应该用现在完成时或一般现在时。B)usedtodo的否定形式和疑问形式很特别：你怎么写都正确。以否定形式为例：usednottodo,didn'tusedtodo,didn'tusetodo都对。Usedtodo经常与beusedtodoingsth/sth结构进行对比。前者表示"过去常常或过去曾经二要求加动词原形：后者表示'习惯于"，要求加名词或动名词。.过去完成时(haddone)用法：表示在过去的某个时间或动作以前已经发生的动作或已经存在的状态。就是我们常说的：表示"过去的过去的动作或状态”。Untilthen,hisfamilyfromhimforsixmonths.A)didn'thearC)hasn'theardB)hasn'tbeenhearingD)hadn'theard全句的意思是：“到那时为止，他家里已经有六个月没得到他的消息了。”由此可以看出，谓语动词的动作延续到过去的某一时刻才完成，因此谓语要用过去完成时。答案是D)。其它选项中：A)didn'thear,因为一般过去时只表示过去发生的事情或存在的状态，所以不能与时间状语forsixmonths连用。B)hasn'tbeenhearing,现在完成进行时表示过去某时刻继续到现在或现在还在进行的动作，与题意不符。C)hasn'theard,现在完成时表示从过去某一时刻到现在为止发生的动作。而题中的then只表示过去的某一时刻，不能表示现在时间。注意事项：“过去的过去”这种逻辑关系常通过上下文体现出来，而不一定受某个时间状语的限制。例：Therehadbeensomeoneinourroomjustnow,becausenoticedaburningcigaretteendonthefloorwhenweopenedthefrontdoor.(刚才有人在我们的房间里，因为我们打开前门进来时，我注意到地板上有一支仍在燃烧的香烟。）分析：虽然时间状语是justnow,似乎应该使用一般过去时，但是“在房间里”这个状态是在，开门"和"注意”这两个过去的动作之前就存在的，所以应该用过去完成时。.过去将来时（would/shoulddo）用法：表示从过去的某个时间看将要发生的事。例：IsaidonThursdayIshouldseemyfriendthenextday.（我星期四说我将于第二天拜访我的朋友。）注意事项：由于过去将来时是由过去时和将来时组合而成的，所以其注意事项可以参考过去时和将来时的相关注意事项。.过去进行时（was/weredoing）用法：A）表示在过去一个比较具体的时间正在发生的动作。例：Marywaslisteningtolightmusic10minutesago.（10分钟前，玛丽正在听轻音乐。）B）如果when,while这样的时间状语引导词所引导的主从句之一是一般过去时，则另一个句子常用过去进行时。例：Iwaswashingmyhairwhenyouknockedatthefrontdoor.（你敲前门时我正在洗头发。）。注意事项：其它与将来时有关的事项请参见下面所讲的一般将来时.一般将来时用法：A）基本结构是will/shalldo。_例：Weshallsendheraglasshand-madecraftasherbirthdaygift.（我们将送给她—个玻璃的手工制品，作为给她的生日礼物。）有些动词,如：arrive,beclose,come,do,done,go,have,leave,open,play,return,sleep,start,5七2丫等，用于一般进行时，并且通常与一个表示将来时间的时间状语连用，可以表示将来时。—例：MymotheriscomingtovisitmenextweekandisstayinghereuntilMay.（我妈妈下周将来看我，并会呆到5月。）表示“打算去 ，要 “时，可用begoingtodo。例：ThisisjustwhatIamgoingtosay.（这正是我想说的。）D）表示“即将、正要”时，可用beabouttodo。强调近期内或马上要做的事。例：Don'tworry,Iamabouttomakeacloseexaminationonyou.（别担心，我马上就给你做一次仔细的检查。）E）"betodo"的5种用法：a）表示“按计划、安排即将发生某事或打算做某事”。例：SheistobeseeninthelabonMonday.（星期一你准会在实验室见到她。）b1该做或不该做的事情（语气上接近于$卜m9,must,oughtto,haveto）,表示一种命令、规劝性语气。例：Youaretogotobedandkeepquiet,kids.Ourguestsarearrivinginlessthan5minutes.（孩子们，你们必须上床睡觉，不准吵闹。我们的客人5分钟之内就要到了。）口能或不能发生的事情（接近can,may）例：HowamItopaysuchadebt?（我怎么可能还得起这么大的一笔债呢？）d）不可避免将要发生的事情■后来将要发生的事情。例：Iassureyouthatthematterasquicklyaspossible.Havealittlepatience.A.willbeattendedB.willbeattendedtoC.isattendedD.isattendedtowillbeattendedto关键的一点是：attend表示“处理，解决”时是不及物动词，必须与to连用。另外，从上下文看，事情显然尚未解决，所以应该用将来时的被动语态。答案是B。e）用于条件从句“如果……想，设想"（接近》手……wantto,或if……should）例：Greatereffortstoincreaseagriculturalproductionmustbemadeiffoodshortageavoided.A）istobeB）canbeC）willbeD）hasbeen答案是A）istobe。全句的意思是：“如果要避免食品短缺，就必须作出更大努力来增加农业产量。”F）同样可以表示“正要、将要”的意思的句型是beonthepointofdoing。例：Thecoachisonthepointofgivingupthegamebecauseourteamhasbeenscored7points.（教练想要放弃这场比赛了，因为对方已经射进了7个球。）例：Iwasthepointoftelephoninghimwhenhisletterarrived.A）inB）toC）atD）on答案是D）。onthepointofdoing是固定词组，意思是“正要、打算”。全句的意思是：“当他的信到的时候我正要打电话给他。”注意事项：在以if,when,as10