高中一轮复习英语讲义必修二Module2NoDrugs

Module2NoDrugs一、单词表词汇全查验——运用多媒体，提问默写词汇Ⅰ.阅读词汇(英译汉)[第一屏听写]1．drugn． 毒品；药品2．bronchitisn. 支气管炎3．cancern. 癌症4．cigaretten. 香烟5．tobaccon. 烟草；烟丝6．cannabisn. 大麻[第二屏听写]7．cocainen． 可卡因8．needlen. (注射用的)针；针管9．burglaryn. 盗窃；窃案；盗窃罪10．shopliftingn. 逛商店时偷窃商品的行为11．cafén. 咖啡馆；餐馆12．leafletn. 传单；印刷品13．joggingn. 慢跑Ⅱ.高频词汇(汉译英)[第三屏听写]1．addictiveadj. (药物等)上瘾的2．dangern. 危险3．addictn. 对(药物等)上瘾的人；瘾君子4．injectvt. 注射5．powerfuladj. 有力的；(药等)有功效的[第四屏听写]6．reducevt. 减少7．nearbyadj. 附近的8．crimen. 罪行；犯罪行为9．criminaln． 罪犯10．connection 联系；关系；关联[第五屏听写]11．illegaladj. 违法的；不合法的12．ration. 比；比率13．treatmentn. 治疗14．likelyadj. 可能的15．adultn. 成人[第六屏听写]16．disagreevi. 不同意；意见不合17．banvt. 禁止18．horribleadj. 令人不快的；极讨厌的19．affectvt. 影响；对……有坏影响20．participantn. 参与者；参加者[第七屏听写]21．recognisevt. 认识；认知；认出22．distractionn. 分心；分散注意力23．gymnasticadj. 体操的24．related_to 有关系的；有关联的25．break_into 破门而入；强行闯入[第八屏听写]26．belong_to 属于27．bee_addicted_to 对……上瘾；沉迷于28．take_one's_advice 听某人的意见29．in_order_to 为了……30．so_as_to 为了……31．give_up 戒除；放弃二、单元核心考点初热身——提供语境，单元考点自测回顾(一)分类识记单词——用时少·功效高识记单词写对Ⅰ.知其意(英译汉)1.drugn．毒品；药品2.bronchitisn.支气管炎3.cancern.癌症4.cigaretten.香烟5.tobaccon.烟草；烟丝6.cannabisn.大麻7.cocainen．可卡因8.needlen.(注射用的)针；针管9.burglaryn.盗窃；窃案；盗窃罪10.shopliftingn.逛商店时偷窃商品的行为11.cafén.咖啡馆；餐馆12.leafletn.传单；印刷品13.joggingn.慢跑Ⅱ.写其形(汉译英)1.crimen．罪行；犯罪行为2.criminaln.罪犯3.affectvt.影响；对……有坏影响4.recognisevt.认识；认知；认出5.gymnasticadj.体操的核心单词练通1.Inthelargestroomaboutadozenchildrenandsevenadults(成人)aresittingonthecarpet.2.Heisnotlikely(可能的)toeatthistimeoftheday.3.Theseanimalsconsumedlargeamountsofvegetation(植被),whichreduced(减少)plantdiversityinthepark.4.Wewentouttohavedinnerinanearby(附近的)restaurant.5.Thebottomchartshowstheratio(比率)ofpersonaldebttopersonaline.6.Doyouadvocatebanning(禁止)carsinthecitycentre？7.Thenoisesonthestreetledtogreatdistraction(分心)fromourlessons.8.Unlessyourespectotherpeople'sreligions,horrible(极讨厌的)mistakesandconflictwilloccur.拓展单词用活[记全记牢]1.addictiveadj.(药物等)上瘾的→addictn．对(药物等)上瘾的人；瘾君子vt.使入迷；使上瘾→addictedadj.上瘾的；成瘾的；有瘾的→addictionn．瘾；入迷；嗜好2.dangern．危险→dangerousadj.危险的→endangervt.危及；危害；使遭受危险3.injectvt.注射→injectionn．注射4.powerfuladj.有力的；(药等)有功效的；强大的→powern．能力；力量；权力→powerlessadj.无权力的；没有能力的5.connectionn．联系；关系；关联→connectv．联系；连接→connectedadj.连接的；相连的6.illegaladj.违法的；不合法的→(反义词)legaladj.合法的7.treatmentn．治疗；处理；对待→treatvt.治疗；对待8.disagreevi.不同意；意见不合→disagreementn．不同意9.participantn．参与者；参加者→participatev．参加；参与→participationn．参与[用准用活]1.Theysaidtheydisagreedwithourview.Asamatteroffact,theirdisagreementwasduetoamisunderstanding.(disagree)2.Afterhecametopower,_everyonesaidhewasapowerfulleader,butnowhefeelssopowerlessthatheevencan'tsavehisdaughter.(power)3.Peoplehadtotreatthemselvesintheirownwaybeforetheyreceivedthetreatmentsentbythegovernment.(treat)4.HedrovesofastthatIreallyfeltmylifewasindanger.SoItoldhimdrivingfastwasdangerousandifhedidn'tslowdown,hewouldendangerourlives.(danger)5.Helikedplayingonlinegamessomuchthatitdidn'ttakehimlongtobeeaddictedtothem.Theaddictiontogamesistakingoverhislife.Soheisreallyagameaddict.(addict)6.Theyencouragedtheparticipantstoparticipateinthesingingperformanceafterthecontestandtheirparticipationgavethestudentsmuchdelight.(participate)⇩eq\a\vs4\al(积得多平时多输入，用时顺手出)1.皆有“可能”①likelyadj.可能的②possibleadj.可能的③probableadj.很可能的④perhapsadv.可能，大概⑤maybeadv.也许，大概2.­ible结尾形容词一览①horrible令人不快的②terrible可怕的③accessible易接近的④sensible明智的⑤flexible易弯曲的⑥digestible可消化的3.“前缀en­＋adj./n.”构成的动词全扫描①danger→endanger使……遭遇危险②able→enable使能够③large→enlarge使扩大④sure→ensure确保；担保⑤rich→enrich使充实⑥title→entitle给……命名(或题名)(二)语段串记短语——不枯燥·兴趣高先写对再用准第一组1.look_up向上看；查找2.break_into破门而入；强行闯入3.belong_to属于4.bee_addicted_to对……上瘾；沉迷于5.put_up提高(价钱)；举起6.break_the_law犯法LiHua①belongs_toClassTwo,andhe②became_addicted_toputergameslastyear.He③broke_intoahouseonedaytogetthemoneyforgames,andthenhewasarrested.LiHuaregrettedhehad④broken_the_lawanddecidedtogetridofthebadhabit.Nowheisagoodstudentinourschool.第二组1.give_up戒除；放弃2.set_a_date定下一个日期3.in_pain处于痛苦中4.related_to有关系的；有关联的5.in_danger处于危险之中6.in_order_to/so_as_to为了……7.take_one's_advice听某人的意见MrSmithsuffersfromaseriousdisease.Hisdiseaseis①related_tosmokingandhislifeis②in_danger.Thedoctorsaysifhedoesn'tstopsmoking,heislikelytolosehislife.③In_order_to/So_as_toliveahealthylife,he④takes_the_doctor's_adviceanddecidesto⑤give_upsmoking.⇩eq\a\vs4\al(积得多平时多输入，用时顺手出)1.无被动语态的动词短语小结①belongto属于②datefrom/backto追溯到③consistof由……组成④etrue变成现实⑤takeplace发生⑥breakout爆发2.“be＋v.­ed＋prep.”短语联想①berelatedto与……有关系②beaccustomedto习惯于③bedevotedto致力于④beadmittedto接纳；录取⑤beabsorbedin全神贯注于⑥beconcernedabout担忧⑦beopposedto反对；对抗3.“连接，结合，关联”短语集合①relateto有关系的；有关联的②coupled...with...把……与……连接起来③connectwith/to...与……连接④binewith与……联合⑤linkto连接到……⑥associatewith联合⑦joinwith与……结合(三)仿写用活句式——造佳句·表达高背原句明句式学仿写1.NowIworkinacentrefordrugaddicts,helpingotherstostoptakingdrugs.现在我在一家戒毒中心工作，帮助其他吸毒者戒毒。现在分词短语作伴随状语。他们高高兴兴地回家了，有说有笑。Theywenthomehappily,talking_and_laughing.2.Thegovernmentputupthepriceofcigarettessoastostoppeoplebuyingthem.为了阻止人们购买香烟，政府提高了香烟价格。stopsb./sth.(from)doing“阻止……做……”。必须做些事情来阻止这家工厂排放有毒气体，这样可以让城市免遭污染。Somethingmustbedoneto_stop_the_factory_(from)_sending_outpoisonousgasessoastokeep_the_city_from_being_polluted.3.Icouldn'tagreemore.我完全同意。“否定词＋adj./adv.的比较级”表示最高级的含义。我以前从未观看过比这更令人激动的比赛。Ihave_never_watched_a_more_exciting_matchbefore.4.Whateveryou'redoingwhenyouwanttosmoke—dosomethingelse！当你想抽烟时，无论你在做什么，(停下来去)找点儿别的事做！whatever引导让步状语从句。无论他说什么，他的老板都不相信。Whatever_he_says,_hisbossdoesn'tbelieveit.考点新组合阅读微技能Tomformedabadhabitofdrinkingandsmoking.Hisparentsreducedhislivingcostandwarnedhimthathewaslikelytobepunishedifhewentonlikethis,but________vain.❶Heevenbrokeintoahousetostealmoney.Nowunderthehelpofhisteachersandclassmateshehasrecognisedthatheshouldnothavebrokentheschoolrules.❷Hehasmadeuphismindtochangehimself,________❸makesallofushappy.1.①处短语缺一介词，应填入in，与vain组成短语意为“徒劳无益；枉费心机”。2.②句中有一处语言错误，请改正。under→with3.③处应填引导词which。1．reducevt.减少；降低；使处于reduce...to... 把……减少到……reduce...by... 把……减少了……bereducedto(doing) 沦落为……；陷入某种状态[多角练透]单句语法填空①Shetakesexerciseeveryday,andshehasreducedherweightto50kilos.②Thoughthepriceofthehousehasbeenreducedby10%,wecan'tafforditeither.补全句子③Hislifeinthebigcitywashardandfinallyhewas_reduced_to_beggingforaliving.他在大城市的生活很艰难，最后他沦落到以乞讨为生。[名师指津]reduce“减少”的近义词是decrease，反义词是increase,rise(增加)。这三个词与reduce用法一样，后可接to...表示增减的结果，接by...表示增减的幅度。2．likelyadj.可能的adv.很可能belikelytodosth. 很可能做某事Itislikelythat...＝Sb./Sth.belikelytodosth. 很可能……notlikely (表示坚决不同意)决不可能；绝对不会[多角练透]句型转换①Youarelikelytosufferfrombadhealthifyoukeepsmoking.→It_is_likely_thatyouwillsufferfrombadhealthifyoukeepsmoking.补全句子②IneversaidI'dgivehermynewbooks.Not_likely!我从没说过我会把我的新书给她。决不可能！[辨析比较]likely,possible,probablelikely表示较大的可能性；用于Itislikelythat...;Sb./Sth.belikelytodosth.句型中，但不用于Itislikelyforsb.todosth.句型中possible表示的可能性较likely,probable小；用于Itispossible(forsb.)todosth.；Itispossiblethat...句型中，但不用于Sb.bepossibletodosth.句型中probable表示的可能性比likely略大；常用于Itisprobablethat...句型中选用以上单词填空③Itispossiblethatitwillrain,butwithsuchablueskyitdoesn'tseemprobable.Inthatcase,wearelikelytogoclimbingthisafternoon.3．recognisevt.认识；认知；认出(1)recognisesb./one'svoice 认出某人/听出某人的声音berecognised...as/tobe... 被认作……/被认为是……Itisrecognisedthat... 人们公认……(2)recognitionn. 认出；认识beyondrecognition 不出来[多角练透]单句语法填空①Itis_recognised(recognise)thateverycitizenshouldprotectourenvironment.②Ihaven'tseenSarasinceshewasalittlegirl,andshehaschangedbeyondrecognition(recognise)．③Since1958,theyhavebeenrecognisedasthenationaltheatreofIsrael.(2017·全国卷Ⅱ)句型转换④WerecogniseLisaasanoutstandingtennisplayer.→WerecogniseLisato_beanoutstandingtennisplayer.⑤Environmentalpollutionisrecognisedtohavebeeoneofthemostseriousproblemsthatpeopleface.→It_is_recognised_thatenvironmentalpollutionhasbeeoneofthemostseriousproblemsthatpeopleface.[联想发散]除了recognized...as/tobe...，表示“认为……是……”的短语还有：①regard...as... ②consider...as...③see...as... ④view...as...⑤thinkof...as... ⑥lookon...as...⑦treat...as... ⑧thinkof...tobe...4．breakinto破门而入；强行闯入；突然……起来[归纳拓展]❶breakawayfrom 脱离；放弃；打破❷breakin 打断；插嘴；闯入❸breakthrough (在某领域)有进展或突破；冲破障碍❹breakdown (身体)垮掉；(机器)出故障；(化学)分解❺breakup 打碎；拆散，解体；开始放假[应用领悟]①Nosoonerhadhesteppedonthestagethantheaudiencebrokeintothunderousapplause.他一登上舞台，观众就发出了雷鸣般的掌声。②Scientistshopetobreakthroughsoonintheirfightingagainstheartdisease.科学家希望在治疗心脏病方面能很快有所突破。③Old­fashionedphonesmatterwhenwirelessnetworksbreakdownindisasters.在灾难中，当无线网络出故障时，老式的就显得很重要了。[名师指津]breakinto中into为介词，其后须接宾语；而breakin中in为副词，为不及物动词短语，表示“强行闯入；打断(谈话等)”。考点新组合阅读微技能NowmoreandmorestudentsarebeingaddictedtotheInternet.Togiveitupishardforthem.❶Theirparentsandteachersdidallthattheycan________(help)❷them,butwhatevertheydid,somestudentscouldn'tgetawayfromit.Herearesomeusefultips.Firstly,set________❸limitedtimeforputeruse.Secondly,callpeopleinsteadofsendinginstantmessagesortexts.Lastbutnotleast,useanalarmclockortimer.1.把句①改为it作形式主语。It_is_hard_for_them_to_give_it_up.2.②处应填入单词的正确形式为to_help。3.③处填介词aside，与set构成的短语意思为“留出”。5．addictn．对(药物等)上瘾的人；瘾君子vt.使入迷；使上瘾(1)addictoneselfto... 沉溺于……；醉心于……(2)addictedadj. 有瘾的；上瘾的；成瘾的be/bee/getaddictedto... 沉迷于……；热爱……；迷上……addictiveadj. (药物等)上瘾的(3)addictionn. 瘾；入迷；嗜好haveaddictionto... 对……上瘾[多角练透]单句语法填空①Teenagerswhoareaddicted(addict)totheInternetaremorelikelytosufferfromdepression.②Addictinghimselftoplaying(play)theviolin,hedidn'tnoticeathiefwalkintohishouse.③LiMingisagameaddict,_andhisfatherhasbeentryingtopreventhimfrombeingaddictedtoplayingputergameswhichareveryaddictive.(addict)④Somestudentsarenowfightingtheiraddiction(addict)toputergames.句型转换⑤ManykidsareaddictedtosurfingtheInternet,sotheyhavelostinterestinstudy.→Addicting_themselves_to_surfingtheInternet,manykidshavelostinterestinstudy.→Addicted_to_surfingtheInternet,manykidshavelostinterestinstudy.[名师指津](1)addicted,addiction常与介词to连用，后跟名词、代词或动名词作宾语。(2)addicted常修饰人；addictive“使人上瘾的”，常修饰物。6．giveup戒除；放弃；让给；停止[归纳拓展]❶giveupsth.to 把……让给/献给……❷giveaway 泄露(机密)；暴露；分发；捐赠❸givein 投降；屈服；让步❹giveinto 屈服于，向……让步❺giveoff 发出(光、热、气味等)；发散(光线)❻giveout 用完，用尽；分发；分布[应用领悟]①HerfatherPeter,44,wantshertogiveupschooltomodelfull­time.(2017·全国卷Ⅲ)她的父亲，44岁的彼得想要她放弃学业，做全职模特。②Thatweekend,wewenttoanearbyneighborhoodandgavethemawaytothepeoplethere.(2016·北京高考书面表达)那个周末，我们去了附近的一个社区并把它们捐赠给那里的人们。③Mymoneywasbeginningtogiveoutandtherewerenojobstobefound.我的钱快用光了，工作也没有找到。7．whatever引导让步状语从句Whatever_you're_doingwhenyouwanttosmoke—dosomethingelse!不管你正在做什么，当你想抽烟时，做点别的事吧！whatever引导让步状语从句，并在从句中作宾语。eq\b\lc\\rc\}(\a\vs4\al\co1(1wherever＝nomatterwhere,whenever＝nomatterwhen,however＝nomatterhow)) 引导让步状语从句(2)whatever,whichever,whoever,whomever既可引导让步状语从句，又可引导名词性从句(3)nomatterwhat,nomatterwhich,nomatterwho(m)只引导让步状语从句①Everyyear,whoevermakesthemostbeautifulkitewillwinaprizeintheKiteFestival.(2017·北京高考单选)每年，在风筝节上风筝做的最漂亮的人会赢得奖品。②Whichever/No_matter_whichroadyoutake,itwillleadyoutothestation.无论你走哪一条路都会到车站。③Whenever/No_matter_whenI'munhappy,itismyfriendswhocheermeup.不管什么时候我不高兴了，总是我的朋友们让我振作起来。[单元语基落实]Ⅰ.单句语法填空1．Itisgenerallyconsideredthatterrorismisadangertosociety.2．It'sgoodmannerstogiveupyourseattotheoldwhenonthebus.3．Thetrainwasdelayedbecauseoftheheavyfog.MrSmithislikelyto_arrive(arrive)abitlate.4．Consideringtheirage，theycouldn'thavedoneitbetter(good)．5．Addicted(addict)toputergames,helostinterestinhisstudy.6．Theyweresoangrythattheybrokeintoaquarrel.7．Thisgirlwasreducedtobeing(bee)abeggartoearnaliving.8．Itisillegal(legal)tosellcigarettestosomeoneunder18.9．—Isthenewjobarealchallengeforhim?—Well,whateverdifficultieshemeets,Ibelievehewillneverloseheart.10．To_be_recognised(recognise)amongthecrowdbyMike,hernetfriend,shewaswearingabrightblueskirtinparticular.11．Hewasbannedfromdrivingforthreeyearsbecauseoftheaccidenthecaused.12．WhileIdisagreewithyouonthismatter,Irespectyourchoice.Ⅱ.单句改错1．Thisdictionarybelongedtomeisworth20dollars.belonged→belonging2．Eventuallyhewasreducedtogiveitup.give→giving3．Deeplyaffect,theaudienceapplaudedwarmlyforalongtime.affect→affected4．Theoperationwasasuccessandsheisnowoutofthedanger.去掉the5．Theywerediscussingsomethingimportantwhenamanbrokeo→in6．AddictingtoChineseculture,hedecidedtolearnChineseinanightschool.Addicting→AddictedⅢ.根据提示词和相关要求补全句子1．这不妨碍我们按期动工。(stop...from...)Thiswon't_stop_us_from_starting_the_workontheprojectontime.2．身体活跃的孩子更有可能成长为积极健康的成年人。(belikelytodosth.)Physicallyactivechildrenare_more_likely_to_beeactiveandhealthyadults.3．无论结果怎样，我们都应该微笑着接受，因为我们已经尽了全力。(whatever引导让步状语从句)Whatever_the_result_is,_weshouldacceptitwithasmile,becausewehavetriedourbest.4．这条狗跟着主人进了屋。(现在分词短语作伴随状语)Thedogenteredtheroom,following_its_master.5．如果我们期望人们放弃开车的习惯，我们必须给他们可以依赖的替代品。(giveup)If_we_expect_people_to_give_up_the_habit_of_driving,_wemustgivethemanalternativetheycanrelyon.Ⅳ.句型转换/一句多译1．Thecarwhichbelongstomeismuchnewerthanyours.→Thecarbelonging_tomeismuchnewerthanyours.2．Whateverhedid,hisparentssupportedhim.→No_matter_what_he_did,_hisparentssupportedhim.3．白天这个时候他不可能来了。①He_is_not_likely_to_eatthistimeoftheday.(belikelyto)②It_is_not_possible_for_him_to_eatthistimeoftheday.(It'spossible...)③It_is_not_likely/possible_that_he_will_eatthistimeoftheday.(It'slikely/possiblethat...)[高考拆组训练]语言知识运用组块专练——练准度(限时：25分钟)Ⅰ.完形填空I'msuremanyofyouarefamiliarwiththeNewYear'sresolution(决心)—“get__1__”.AfteraChristmasofstaying__2__，watchingtelevisionandeatingfartoomuchchocolate,Idecidedenoughwasenough.Januarywasgoingtobe__3__.Januarywasgoingtobethestartofthenew,healthyme—lesschocolate,more__4__，anall­roundhealthierlifestyle.But__5__wasIgoingtodothis?AsIbrowsedtheInternetlookingfor__6__，IrealisedjusthowlittleIknewaboutwaystogetfit.Intermsofexercise,Ihadalways__7__youeitherplayedateamsportlike__8__orwenttothegym.AndwiththearrivalofJanuarysnow,playingfootballoutsidedidn'tseemlikethebestoption,andasIhaveadeep­rooted__9__offallingoffrunningmachines,thegymwasn'tgoingtoworkouteither.PlusI'veneverquiteunderstoodtheconceptof__10__toruninsidewhenyoucouldrunoutsideforfree!__11__，IknewthatIneededtoresearchmyoptionsfurther.ThefirstthingIfoundwastheworldofYouTubeexercisevideos.Therearevideosfor__12__abouteverything.ThegoodthingaboutYouTubevideosisthattheyarefree,theyare__13__(youcandothemwheneveryouwant)andyoudon'thaveto__14__yournicewarmhousetodothem.But__15__youdothemwithafriendit's__16__tomotivateyourselftokeepgoing,andwithoutaninstructortherewithyouit'ssometimeshardtoknowifyou'redoingthemove__17__.Ithenresearchedlocalfitnessclassesandfoundmysmalltowntobeabsolutelyswimmingwith__18__！Iquicklysigneduptotheoverallsportsclub,hadalookattheweeklytimetableand__19__totrythemallout.SofarIhavetriedoutmostofthem.My__20__onesarebyfarthedance­basedonesthattakeplacetomusic,becauseitmakesexercisesomuchmorefun!语篇解读：本文是一篇记叙文。作者讲述了自己探索适合自己的运动方式的经历。1．A.rich B．fitC．busy D．ready解析：选B由下文的“thenew”“healthyme”及“waystogetfit”可知，作者的新年打算是变得“健康(fit)”。2．A.alone B．abroadC．indoors D．outside解析：选C圣诞节期间天气寒冷，作者应该是一直“在室内(indoors)”，看电视、吃东西，过着很不健康的生活。3．A.hard B．similarC．relaxing D．different解析：选D由下文的“Januarywasgoingtobethestartofthenew,healthyme”可知，作者打算用“不同的(different)”方式过新年的第一个月。4．A.exercise B．foodC．fun D．work解析：选A由下文的“healthierlifestyle”及“Intermsofexercise”可推断，作者打算以后少吃巧克力，多做“运动(exercise)”。5．A.when B．howC．whether D．why解析：选B由下文的“waystogetfit”可知，作者在考虑“如何(how)”才能健康生活。6．A.impression B．preparationC．inspiration D．permission解析：选C作者浏览网上的信息以获得关于健康生活的“灵感(inspiration)”。7．A.allowed B．admittedC．assumed D．promised解析：选C关于运动，作者原来一直“以为(assumed)”只有两种方式：做团体性运动或去健身房。8．A.tennis B．basketballC．badminton D．football解析：选D由上文的“ateamsportlike”及下文的“playingfootball”可知，作者把踢“足球(football)”作为团体性运动的例子。9．A.surprise B．angerC．sadness D．fear解析：选D由下文的“fallingoffrunningmachines,thegymwasn'tgoingworkout”可推断，作者很“害怕(fear)”从跑步机上摔下来。10．A.paying B．planningC．practicing D．playing解析：选A此处是相对于下文的“forfree”而言。即作者无法理解人们为什么明明可以免费在室外跑步却偏要“花钱(paying)”在室内跑步。11．A.Therefore B．HoweverC．Besides D．Otherwise解析：选A由上段可知，作者发现她所了解的两种运动方式都不可行，“因此(Therefore)”，她知道自己需要多做一些研究。12．A.only B．alsoC．just D．still解析：选C作者发现YouTube上面有关于几乎所有运动方式的视频。justabout“几乎”。13．A.cheap B．flexibleC．useful D．safe解析：选B由下文括号中的解释“youcandothemwheneveryouwant”可知，跟着YouTube上面的视频做运动在时间方面比较“灵活(flexible)”。14．A.clean B．leaveC．build D．buy解析：选B跟着网上视频做运动不必“离开(leave)”家，在家里就可以做。15．A.if B．thoughC．since D．unless解析：选D虽然跟着网上视频做运动有诸多好处，但是“除非(unless)”你和朋友一起做，否则你“很难(difficult)”激励自己坚持下去。16．A.boring B．importantC．possible D．difficult解析：选D参见上题解析。17．A.smartly B．quicklyC．correctly D．beautifully解析：选C没有教练在身边，有时你很难知道自己的动作是否“正确(correctly)”。18．A.opportun