Unit 4 Breaking boundaries二-2025-2026学年高中英语词汇变形及词缀精讲选择性必修第二册（外研版）

高中外研版 【词汇精讲】 选择性必修第二册 词汇精讲 Unit 4 Breaking boundaries 词汇变形及词缀精讲 全部单元单词 division/d'3n/n.分歧，分裂 portion/'pojn/n.一部分 noby/naubli/adv.高尚地，崇 bring forth使产生，使出现 altogether/,:lta'geia(r)/adv.完高地 conceive /kan'si:v/v.构想，设想全 in vain白白地 liberty/libati/n.自由 consecrate'konsikrert/V.宣布perish/'pev.死亡 dedicate/'dedrkert/v.致力于，献…为神圣之处 influential/,nflu'en/adj.有影 身于 hallow/'helw/v.使成为神圣响力的 endure /m'djoa(t)/v.持续存在 detract/dr'traekt/v.减低，破坏，communist/'kpmjanIst/ad.共 battlefield/baetlfi:ld/n.战场 损害 产主义的 词汇变形及词缀精讲 1.liberty/'lbati/n.自由 词汇变形 形容词形式：liberal(自由的；开明的) 构词解析 后缀y:加在形容词后构成抽象名词，表”性质、状态”。 同类词：security(安全)←-secure(安全的)、cruelty(残忍)←一cuel（残忍的) 例句：People all over the world fight for liberty and justice. 真题链接（外研版高中选择性必修第二册同步练习）：The philosopher argued that (liberty)is the most valuable human right..(答案：liberty) 2.dedicate/'dedikert/.致力于，献身于 词汇变形 名词形式：dedication(奉献：献身) 构词解析 前缀de-:表完全、加强；后缀-ate:构成动词；-tion:构成名词，表”动作、状态”。 例句：She dedicated her life to helping the poor in remote areas. 真题链接（外研版高中选择性必修第二册教材例句）：His dedication to scientific research inspired many young students. 高中外研版 【词汇精讲】 选择性必修第二册 3.endure/m'djua/v.持续存在 词汇变形 形容词形式：enduring(持久的；不朽的) 名词形式：endurance(耐力：持久力) 构词解析 前缀en-:表”使”；后缀-ure:构成名词，表”行为、结果”；-ing:构成形容词，表”具有。 性质的。 同类词：ensure(确保)、endurance(耐力) 例句：The ancient temple has endured for over a thousand years. 真题链接（外研版高中选择性必修第二册同步练习)：Long-distance running requires both physical strength and (endure).(答案：endurance) 4.portion/'pn/n.一部分 词汇变形 动词形式：portion(分配，分摊) 构词解析 后缀i0:构成名词，表”行为、结果”：该词也可直接用作动词，表”将…分成部分”。 同类词：division(分歧，分裂)、section(部分) 例句：Each child received an equal portion of the cake.. 真题链接（外研版高中选择性必修第二册教材例句）：She portioned out the food to the hungry children, 5.detract/d'traekt/v.减低，破坏，损害 词汇变形 名词形式：detraction(贬低：诋毁) 形容词形式：detractive(减损的：诽谤的) 构词解析 前缀de-:表”向下、相反”；词根tract:表”拉”（如attract'”吸引')：后缀-ion:构成名词；-ive:构 成形容词。 例句：Minor mistakes do not detract from the overall quality of the work, 真题链接（外研版高中选择性必修第二册同步练习）：Spreading1 umors is a form of」 (detract) that harms others'reputation..（答案：detraction) 6.influential/,mflu'en/adj.有影响力的 词汇变形 名词形式：influence(影响；势力) 动词形式：influence(影响) 构词解析 前缀in-:表进入、在…内：词根flu:表”流动”（如fluid液体”）：后缀-tial:构成形容词，表” 具有…性质的”。 The professor is an influential figure in the field of environmental science. 真题链接（外研版高中选择性必修第二册同步练习）：Her ideas have a great (influence)on young people's choices.(答案：influence) 2 高中外研版 【词汇精讲】 选择性必修第二册 7.communist/'kpmjanist/adj.共产主义的：n.共产主义者 词汇变形 名词形式：communism(共产主义) 构词解析 前缀com-:表”共同’；词根mun:表”公共的”（如community”社区”）：后缀-ist:表”信仰者、实 践者”，可构成名词和形容词。 同类词：socialist(社会主义者；社会主义的)←-socialism(社会主义) 例句：The book introduces the basic principles of communist ideology.. 真题链接（外研版高中选择性必修第二册教材例句）：He devoted himself to the cause of communism. 8.division/dr'vI3/n.分歧，分裂 词汇变形 动词形式：divide(分开：划分) 形容词形式：divisive(引起分歧的) 构词解析 前缀di-(=dis):表”分开”；词根vis:表”看、分开（如visible”可见的)；后缀-ion:构成名 词，表”行为、结果”；ive:构成形容词。 例句：The division between the two groups grew deeper over time. 真题链接（外研版高中选择性必修第二册同步练习）：We need to (division)the task into smaller parts to save time.(答案：divide) 9.conceive /kan'si:v/v.构想，设想 词汇变形 名词形式：conception(概念：构想) 形容词形式：conceivable(可想象的) 构词解析 前缀con-:表”共同、完全”；词根ceive:表”拿、抓”（如receive”收到)：后缀-tion:构成名词； -able:构成形容词，表”可…的'。 It's hard to conceive how life was before the invention of electricity. 真题链接（外研版高中选择性必修第二册同步练习）：The_(conceive)of the project was first proposed by a young engineer..(答案：conception) l0.consecrate/'kpnsikreit/.V.宣布…为神圣之处 词汇变形 名词形式：consecration（神圣化：奉献仪式) 构词解析 前缀con-:表”共同、加强”；词根secr:表”神圣的”（如sacred'神圣的”)：后缀-ate:构成动词： -ion:构成名词。 The ancient temple was consecrated as a place of worship centuries ago. 真题链接（外研版高中选择性必修第二册教材例句）：The ceremony included the consecration of the new church building. 3 高中外研版 【词汇精讲】 选择性必修第二册 11.hallow/'hela/v.使成为神圣 词汇变形 形容词形式：hallowed(神圣的：受崇敬的) 构词解析 后缀-d:构成形容词，表”已…的；被…的”。 同类词：sacred(神圣的)、blessed(神圣的) 例句：The soldiers fought to defend the hallowed land of their country. 真题链接（外研版高中选择性必修第二册同步练习）：The memorial stands as a symbol of the hallow)memory of the fallen heroes.(答案：hallowed) 12.perish/'pev.死亡 词汇变形 名词形式：peril(危险；冒险) 形容词形式：perishable(易腐烂的：易消亡的) 构词解析 前缀per-:表”完全、彻底”：后缀-ish:构成动词，表”使”；-able:构成形容词，表”易…的”。 例句：Many lives perished in the terrible earthquake. 真题链接（外研版高中选择性必修第二册教材例句）：The explorers faced great peril during their journey to the North Pole. 综合训练 一、 根据句意及汉语提示完成单词 6.The government is committed to protecting the (自由)of citizens. 7.His to the project earned him the respect of all teammates. 8.The (friendship between the two families has lasted for generations. 9.Each student should take an equal (部分)in group discussions. 10.The (between the two political parties has widened recently. 二、用所给单词的适当形式填空 6.The artist (dedicate)his life to creating works that reflect social reality. 7.Long-distance hiking requires not only physical strength but also mental (endure). 8.Her (conceive)of the new marketing plan impressed the entire team. 9.The (divide)of labor among team members improved work efficiency. 4 高中外研版 【词汇精讲】 选择性必修第二册 10.The old castle has (perish)over time,leaving only ruins. 三、完成句子（每空一词） 5.这位科学家致力于癌症研究多年。 The scientist cancer research for many years. 6.这个古老的传统已经持续了数百年。 The ancient tradition has hundreds of years. 7.他的演讲对年轻一代有很大影响。 His speech has a great the younger generation. 8.我们需要将这个大任务分成几个小部分。 We need to the big task several small parts 四、语篇填空 阅读下面短文，在空白处填入一个适当的单词或用括号内单词的正确形式填空，使短文通顺、连 贯。 Many people dream of achieving(liberty)in both body and mind.To realize this,one must have strong(dedicate)and the ability to endure hardships.For example,a writer may spend years conceiving a story before putting it into words.The(divide)of time between writing and research is crucial.Even small distractions can detract from progress,but_ (influence)works often come from such persistence.In history,many(communism)fighters dedicated their lives to the cause of justice,leaving a (hallow)legacy for future generations. 参考答案 I.根据句意及汉语提示完成单词 6.liberty 7.dedication 8.enduring 9.portion 10.division 工.用所给单词的适当形式填空 6.dedicated 7.endurance 8.conception 9.division 10.perished ⅡL完成句子 5.has dedicated himself to 6.endured for 7.influence on 8.divide;into V.语篇填空 1.liberty 2.dedication 3.endurance 4.conception 5.division 6.detract 7.influen- tial 8.communist 9.hallowed 5