2021学年高中英语Unit4Breakingboundaries教学知识细解码教师用书外研版选择性

Unit4Breakingboundaries1．assistv．帮助，协助→assistancen．帮助；协助→assistantn．助手；助理2．specialadj.特殊的；特别的→specialistn．专家3．infectv．感染→infectionn．感染，传染→infectiousadj.传染性的→disinfectvt.给……杀菌；为……消毒4．devotevt.献身于→devotionn．奉献→devotedadj.献身的；热爱的5．twinadj.双胞胎的→twinsn．双胞胎devotionn．挚爱；关爱；关照；奉献；忠诚；专心；热心①Hisdevotiontohiswifeandfamilyistouching.挚爱，关爱②Herdevotiontothejobleftherwithverylittlefreetime.忠诚；专心③Asasoldier，heshowedselflessdevotiontoduty.奉献WordsandPhrases知识要点1assistvt.&vi.帮助，协助(教材P38)Itassistspeoplebasedonneed,regardlessofwhichcountrytheyarefrom.它根据需要帮助人们，不管他们来自哪个国家。[例1]We'lldoallwecantoassistyou.我们要尽量帮助你。[例2]Anyonewillingtoassistcancontactthisnumber.凡愿协助者可拨此号码联系。[造句]我们正寻找愿意协助该团体工作的人。Wearelookingforpeoplewhowouldbewillingtoassistinthegroup'swork.[知识拓展](1)assist(sb.)in(doing)sth.帮助(某人)(做)某事assistsb.withsth.帮助某人做某事assistsb.todosth.帮助某人做某事(2)assistantadj.副的；助理的n.助手；店员assistancen.帮助，援助[即学即练]单句语法填空①Twomenareassistingthepolicein/withtheirenquiries.②Wewillassistyouinfinding(find)somewheretolive.③BillassistedhisfriendMiketoestablish(establish)anewcompany.④Chinawillcontinuetoincreaseitsassistance(assist)toAfricainbothquantityandquality.[小片段填空]Theshopassistantrushedoutoftheshoptoassisttheoldladywithherluggage.Withhisassistance,theoldladycrossedtheroad.(assist)知识要点2vitaladj.极其重要的，必不可少的(教材P38)Butitisvitalnottotakeanychances.但重要的是不要冒险。[例1]Goodfinancialaccountsarevitaltothesuccessofanyenterprise.妥善的财务账目对任何公司的成功都是极其重要的。[例2]Thepoliceplayavitalroleinoursociety.警察在我们的社会中起着极其重要的作用。[造句]现在，我们接着往下讨论今天的重要事宜。Nowwemoveonanddiscussthevitalbusinessoftheday.[知识拓展]bevitalto/for对……极其重要；必不可少Itisvitalthat...……极其重要(that从句中谓语用shoulddo形式)ofvitalimportance至关重要[即学即练]单句语法填空①Thequickrecognitionofdiseaseisvitalforeffectivetreatment.②Itisvitalthatweshouldbekept(keep)informedofalldevelopments.③Itiswithoutdoubtthatthedevelopmentofscienceandtechnologyisofvitalimportance(important)tohumanadvancement.知识要点3atrisk处在危险中(教材P38)IknewIwasputtingmylifeatrisk...我知道我在冒生命危险……[例1]Thecrisiscouldwellplacetherelationshipatrisk.这场危机可能会使这一关系有破裂的危险。[例2]Iftheyhavethevirustheyareputtingpatientsatrisk.如果他们有这种病毒，就会将病人置于危险境地。[造句]当一种新型流感感染了一个人，那么所有人都有危险。Whenanewfluinfectsonehumanbeing,allareatrisk.[知识拓展](1)riskdoing...冒险做……riskone'shealth/life以健康做赌注/冒着生命危险(2)attheriskof(doing)...可能导致(不快等)，冒(做)……的危险atallrisks无论如何run/takearisk/risks冒险run/taketheriskof(doing)...冒(做)……的危险[即学即练]单句语法填空①Whichteamismorewillingtotakerisks(risk)?②Hegotwell­preparedforthejobinterview,forhecouldn'trisklosing(lose)suchagoodchance.③Hewasdeterminedtodoitevenattheriskofbeinglaughed(laugh)at.知识要点4(教材P38)MymissionwastorelieveEmma,aCanadianspecialistininfectiousdiseasesattheendofherposting.我的任务是在加拿大传染病专家艾玛任职结束后接替她。(1)specialistn．专家，专业工作者[例1]Peckham,himselfacancerspecialist,iswellawareofthewidevariationsinmedicalpractice.佩卡姆本人就是个癌症专家，非常清楚医疗实践中的广泛差异。[例2]Wehadbettercallinaspecialistatthiscriticalmoment.在这个关键时刻我们最好请一位专家来。[造句]农民们把他看作专家。Thepeasantslookeduponhimasaspecialist.[知识拓展]specialadj.特殊的，专门的specializevi.专攻，专门从事specializein...专攻……specialization专业化[即学即练]单句语法填空①Wespecializeincreatingbeautiful,delicious,andtrulyuniquecakes.②Ithinkwe'veenteredanageofspecialization(special)．(2)infectiousadj.传染性的[例1]Thesevirusesaffectchildrenandarehighlyinfectious.这些病毒会侵袭儿童，而且具有很强的传染性。[例2]Infectiousdiseasesarespreadingamongmanyofthefloodvictims.传染病正在遭受洪灾的很多灾民中蔓延。[造句]苍蝇和蚊子是传染病的传播者。Fliesandmosquitoesarecarriersofinfectiousdiseases.[知识拓展]infectvt.传染；使感染disinfectvt.为……消毒；给……杀菌infectionn.传染；感染[即学即练]单句语法填空①WhenIneededdisinfect(infect)thenursingbottles,Iwouldcomeheretousethemicrowaveoven.②Earinfections(infect)arecommoninpreschoolchildren.知识要点5inone's50s在某人五十多岁时(教材P38)Alfonso,asoft­spokenArgentiniandoctorinhis50s,whohadpreviouslyworkedonEbolaoutbreaksinSierraLeoneandGuinea.阿方索是一位50多岁说话温和的阿根廷医生，此前曾在塞拉利昂和几内亚研究埃博拉疫情的爆发。[例1]Hediedwhenhewasinhis50s,mucholderthansomeoftheearlyteenagedancers.他是50多岁去世的，比那些青少年时就去世的舞蹈演员年纪大多了。[例2]Thespeakerwasinhis50s.Hewasinabluelonggownwhichwasfadedtopale.那说话人50来岁，一件青布长袍早洗得褪成了蓝灰色。[造句]不久前，我和50多岁的叔叔在伦敦喝咖啡。IwasrecentlyinLondonsharingacoffeewithmyuncle,who'sinhis50s.[知识拓展]inone'stwenties/thirties在某人二十/三十多岁时inthe1930s在二十世纪三十年代[即学即练]单句语法填空①WhenhemovedtoGermanyinthe1930s,hewasalreadyinhissixties(sixty)．②WhenJohnbegantorestorethehouseinthe1960s,nothinghadbeentouchedfor40years.知识要点6nottomention更不必说(教材P39)ItissoinspiringtohavecolleagueslikeWilton,MaisyandAlfonso,nottomentionalltheothersIhaveworkedwith.有哈桑、梅西、阿方索这样的同事，更不用说和我共事过的其他人了，真是太令人鼓舞了。[例1]Wecan'taffordacar,nottomentionthefactthatwehavenogarage.我们买不起汽车，没有车库的事就更不必说了。[例2]Theaudience，nottomentionthebewilderedcast，werenotamused.观众们并没有觉得好笑，更不用说那一头雾水的演员了。[造句]潮湿就令人不舒服，更不必说寒冷了。Thedampnessisuncomfortable，nottomentionthecold.[知识拓展]mentionv．&n.提到；涉及mentionsth.tosb.向某人提及某事mentiondoingsth.提及做某事don'tmentionit不用谢；别客气make(no)mentionof(没)提及[即学即练]单句语法填空①Nobodymentionedanythingtomeaboutit.②Thestatementmadenomentionofgovernmentcasualties.③Hedidn'tmentiontaking(take)sleepingpillsregularly.SentencePatterns重点句式1不定式作表语(教材P38)MymissionwastorelieveEmma,aCanadianspecialistininfectiousdiseasesattheendofherposting.我