Unit 4 Breaking boundaries一-2025-2026学年高中英语重点词汇精讲选择性必修第二册（外研版）

高中选择性必修第二册外研版 寒假专版 词汇核心考点精讲 【寒假专版】 高中·外研·选择性必修第二册Unit4 Breaking boundaries一 单元词汇总览 boundary/'baundri//n.分界线；tragic/'trad3k/adj.悲惨的，不毒，给…杀菌 边界 幸的 outbreak/'autbreik/n.爆发，突 statistic/st'tstk/n.(一项)统Ebola /i'b3l3/n.埃博拉病毒 然发生 计数据 combat/'kpmbaet/v.防止，抑制 devotion/dr'van/n.奉献 assist/'sIst/V协助，帮助 relieve /r'li:v/v.给（某人)换班vomit/vomt/n.呕吐物 tackle'tekl/v.处理，对付（难specialist/'spefalrst//n.专家 miracle/mirakl/n.意外的幸运 题) infectious/m'fek∫3s/adj.传染性事；奇迹 iral/'varral/adj.极其重要的 的 van /vaen/,n.小型货车 comrade/'kpmreid/n.同志；朋clinic/'"klnk/n.诊所；门诊部twi/twm/adj.双胞胎的 友 disinfect/,dsn'fekt/v.为…消 词汇核心考点精讲 1.boundary/'baundri/n.分界线：边界 ·核心考点：词性：名词(n.) 2个核心义：分界线（具体空间）、边界（抽象概念） ·必记搭配与例句：●cross the boundary(越过边界)：They crossed the boundary into the next country. ·the boundary between A and B(A与B之间的界限)：There is a clear boundary between work and life ·重点派生词：●bond(动词)：be bound to(必然，一定)He is bound to succeed. 2.statistic/ste't虹stkn.(一项)统计数据 ·核心考点：词性：名词(n.) 1个核心义：（一项）统计数据 ·必记搭配与例句：·official statistics(官方统计数据)：Official statistics show the economy is growing ●statistics(复数，统计学)：He studies statistics at university. ·重点派生词：·statistical(形容词)：statistical analysis(统计分析) ·statistically(副词)：statistically significant(统计上显著的) 高中选择性必修第二册外研版 寒假专版 3.assist/A'sIst/v.协助，帮助 ·核心考点：词性：动词(v) 1个核心义：协助，帮助 ·必记搭配与例句：●assist sb.in doing sth.(协助某人做某事)：She assisted me in solving the problem ●assist with sth.（协助处理某事)：He assists with the project management,. ·重点派生词：●assistance(名词)：give assistance(提供帮助) ●assistant(名词)：a teaching assistant(助教) 4.tace/tek/v.处理，对付（难题） ·核心考点：词性：动词(v) 1个核心义：处理，对付（难题） ·必记搭配与例句：●tackle a problem(处理间题)：We need to tackle this issue immediately. ●tackle with(与…交涉)：He tackled with the manager about the salary. ·重点派生词：●tackler（名词)：a good tackler(善于解决问题的人) 5.ial/'var/ad.极其重要的 ·核心考点：词性：形容词(adj) 1个核心义：病毒性的：（信息）像病毒般传播的 ·必记搭配与例句：·viral infection(病毒感染)：She got a viral infection last week ●go viral(迅速传播)：The video went viral on the Internet.. ·重点派生词：·vius(名词)：computer virus(电脑病毒) 6.tragic/tred3kadj.悲惨的，不幸的 ·核心考点：词性：形容词(adj) 1个核心义：悲惨的，不幸的 ·必记搭配与例句：●tragic accident(悲惨的事故)：The tragic accident killed 10 people ●tragic ending(悲惨结局)：The story has a tragic ending. ·重点派生词：●tragedy(名词)：a national tragedy(国家悲剧) ·tragically（副词)：tragically killed(不幸遇难) 7.combat/'kpmbaet/v.防止，抑制 ·核心考点：词性：动词(v) 1个核心义：防止，抑制：战斗 ·必记搭配与例句：●combat against(与…作斗争)：We must combat against pollution. ●combat disease(防治疾病)：Measures are taken to combat the disease. 高中选择性必修第二册外研版 寒假专版 ·重点派生词：●combatant(名词)：combatants in the war(战争中的combatants) 8.relieve/rI'liv/v.给（某人)换班 ·核心考点：词性：动词(v) 2个核心义：缓解（痛苦等）、给（某人）换班 ·必记搭配与例句：●relieve pain(缓解疼痛)：This medicine can relieve your pain. ●relieve sb.of sth.(减轻某人负担)：Let me relieve you of this heavy box. ·重点派生词：●relief(名词)：a sense ofrelief(如释重负) ·relieved(形容词)：feel relieved(感到宽慰的) 9.specialist/'spefalist/n.专家 ·核心考点：词性：名词(n) 1个核心义：专家 ·必记搭配与例句：·a specialist in(某领域专家)：He is a specialist in heart disease. ●see a specialist(看专家)：You should see a specialist about your eyes. ·重点派生词：●specialize(动词)：specialize in(专攻)She specializes in history. ●special(形容词)：special treatment(特殊待遇) 10.infectious./m'fekfas/adj.传染性的 ·核心考点：词性：形容词(adj) 1个核心义：传染性的：有感染力的 ·必记搭配与例句：●infectious disease(传染病)：COVID-l9 is an infectious disease. ●infectious smile(有感染力的微笑)：Her smile is infectious. ·重点派生词：·infect(动词)：infect others(传染他人) ●infection(名词)：reduce the risk of infection(降低感染风险) ll.disinfect/.dsn'fekt/v.为…消毒，给…杀菌 ·核心考点：词性：动词(v) 1个核心义：为…消毒，给…杀菌 ·必记搭配与例句：●disinfect the room(给房间消毒)：Please disinfect the room before use. ●disinfect with(用…消毒)：Disinfect the wound with alcohol. ·重点派生词：●disinfection(名词)：regular disinfection(定期消毒) ●disinfectant(名词)：a bottle of disinfectant(一瓶消毒剂) 12.devotion/d'van/n.奉献 ·核心考点：词性：名词(n) 1个核心义：奉献；热爱 高中选择性必修第二册外研版 寒假专版 ·必记搭配与例句：●devotion to(对…的奉献)：Her devotion to teaching is admirable. ●with devotion(虔诚地)：He prays with devotion. ·重点派生词：·devote(动词)：devote oneself to(致力于) 。devoted(形容词)：a devoted friend(忠实的朋友) 词汇核心考点综合训练 1.一、单项选择 1.We need to find a clear between our personal and professional lives. 。A.boundary ●B.statistic ·C.specialist ●D.devotion 2.Official show that the number of students choosing science majors is increasing. 。A.statistics ●B.statics ●C.statistical ●D.statistic 3.The teacher asked Tom to her in preparing the teaching materials. ●A.assist ·B.tackle 。C.combat ●D.relieve 4.It's important to environmental problems before they get worse. ●A.tackle ●B.assist 高中选择性必修第二册外研版 寒假专版 ·C.devote ●D.disinfect 5.The video of the rescue on social media within hours. ●A.went viral ·B.got viral ·C.became viral 。D.turned viral 6.The accident caused heavy losses to the local community. ·A.tragic ●B.infectious ·C.viral ·D.special 7.The government has taken measures to the spread of the disease. ●A.combat ●B.relieve ·C.infect ·D.specialize 8.This medicine can effectively your headache ●A.relieve ●B.assist ·C.tackle ●D.devotion 9.You should consult a in heart disease for your symptoms. ·A.specialist 高中选择性必修第二册外研版 寒假专版 ·B.assistance ·C.statistic ●D.combatant 10.Her to helping the poor has inspired many young people. 。A.devotion ●B.relieve 。C.tackle ●D.boundary 2.二、根据提示补全句子 1.The doctor used alcohol to the wound.(disinfect) 2.She has a smile that always cheers others up.(infect) 3.His to the research project led to its success.(devote) 4.The analysis shows a significant trend in the data.(statistic) 5.We need to take measures to prevent infection.(special) 6.After the storm,there was a sense of when everyone was safe.(relieve) 3.三、首字母填空 1.The river forms a natural b between the two countries. 2.Regular d of public areas is necessary during the epidemic. 3.She is as in traditional Chinese medicine 4.The team worked with great d to complete the task on time. 5.The disease is highly i so we must take protective measures 4.参考答案 ·一、单项选择 1.A2.A3.A4.A5.A6.A7.A8.A9.A10.A ·二、根据提示补全句子 1.disinfect 2.infectious 3.devotion 4.statistical 5.special 6.relief ·三、首字母填空 1.boundary 2.disinfection 3.specialist 4.devotion 5.infectious