Unit 5 A delicate world三-2025-2026学年高中英语词义辨析及同义替换精讲选择性必修第二册（外研版）

高中外研版 【核心词汇精讲】 选择性必修第二册 核心词汇 Unit 5)A delicate world 词义辨析及同义替换精讲 本单元核心词汇 一、全部单元单词 rare /rea(r)/adj.稀有的，罕见的化 elsewhere/.els'wea)/adv.在别 biological/,ba3'lDd3k/adj.生thrive/raIv/v.茁壮成长 处 物的，与生物有关的 fossil/'fosl/n.化石 invasion/m'veI3/n.涌入 apparently /a'paerantli/adv.据floral/'flo:ral/adj.花的 coexist/kavIg'zIst/V.共存，共 说：看来，似乎 vertebrate/'v3 tibrat/n.脊椎动处 vast/va:st/adj.巨大的：广大的物 secure/sr'kjUa()/adj.稳固的：安 altitude/lttju:d/n.海拔（高beehive/bi:harv/n.蜂房，蜂箱全的 度) endangered/m'demd3d/adj.濒greeting/'gri:t/n.间候，招呼 variation/,veri'en/n.差异；变临灭绝的 词义辨析及同义替换 1. rare /rea(r)/adj.稀有的，罕见的 词义辨析： rare:侧重指因数量稀少而珍贵，或发生频率低，如稀有物种、罕见现象。 scarce:强调“供不应求的、紧缺的”，侧重资源因短缺而难以获得，如食品紧缺。 同义替换： scarce,uncommon 例句： Pandas are rare animals in the world 真题链接：（外研版高中选择性必修第二册同步练习） This kind of plant is becoming due to environmental changes. A.common B.rare C.ordinary (答案：B) 2.vast/wast/adj.巨大的：广大的 词义辨析： vast:强调面积、范围或数量的“广阔无垠”，常修饰海洋、沙漠、草原等自然空间。 高中外研版 【核心词汇精讲】 选择性必修第二册 uge:侧重体积、规模或程度“庞大”，可修饰具体事物（如巨石）或抽象概念（如问题）。 同义替换： enormous,extensive 例句： The vast desert stretches for thousands of miles 真题链接：（外研版高中选择性必修第二册单元测试） The company has made a investment in renewable energy. A.vast B.tiny C.small (答案：A) 3.secure/sr'kja)/adj.稳固的；安全的 词义辨析： scre:既可指物理上“安全的、无危险的”，也可指抽象上“稳固的、有保障的”（如工作、关 系)。 saf:侧重“无风险的、未受伤害的”，强调避免危险或伤害的状态，如安全的地方、安全的行 为。 同义替换： safe,stable 例句： We need to find a secure place to store these documents. 真题链接：（外研版高中选择性必修第二册期中复习题） It'snot_ to walk alone in the street at night A.secure B.dangerous C.difficult (答案：A) 4.apparently/paerantli/adv.据说；看来，似乎 词义辨析： apparently:指“从表面上看、似乎”，可能与事实不符，强调表象。 obviously:侧重“明显地、显而易见地”，指事实或道理清晰易懂，无需证明。 同义替换： seemingly,supposedly 例句： Apparently,the project will be completed next month. 真题链接：（外研版高中选择性必修第二册同步练习） he has never been to Paris,although he talks about it often. A.Apparently B.Really C.Certainly (答案：A) 5.variation/,veri'ern/n.差异：变化 词义辨析： variation:指同一类事物在形式、程度、特征等方面的“差异、变体”，如价格波动、口音差异 difference:.泛指“不同之处”，强调两个或多个事物之间的区别，如意见分歧、文化差异。 高中外研版 【核心词汇精讲】 选择性必修第二册 同义替换： difference,fluctuation 例句： There are many variations in climate between the north and south of the country. 真题链接：（外研版高中选择性必修第二册单元测试） The in temperature today is between 10C and 20C. A.variation B.similarity C.equality(答案：A) 6.endangered/m'demd3ad/adj.濒临灭绝的 词义辨析： endangered:指物种“濒临灭绝的、有生命危险的”，强调处于危险状态，常用搭配endangered species。. dangerous:侧重“危险的、可能造成伤害的”，修饰事物或人具有危险性，如dangerous animals。 同义替换： threatened,at risk 例句： Many endangered species are protected by law. 真题链接：（外研版高中选择性必修第二册期末复习题） We must take action to save animals like the Siberian tiger. A.common B.endangered C.ordinary (答案：B) 7.coexist/,kaoig'zIst//V.共存，共处 词义辨析： coexist:指不同事物或群体“和平共处、共存”，强调相互包容，不冲突，如人与自然共存。 exst:泛指“存在、有”，仅表示事物的客观存在，不涉及与其他事物的关系。 同义替换： live together,cohabit 例句： Humans and nature should coexist in harmony. 真题链接：（外研版高中选择性必修第二册同步练习） Different cultures can if people respect each other. A.coexist B.fight C.compete (答案：A) 8.thrive/Orarv/v.茁壮成长 词义辨析： thrive:指生物“茁壮成长、兴旺发达”，强调在适宜环境中健康成长或事业蓬勃发展。 gow:泛指“生长、成长”，侧重自然的生长过程，不强调状态的旺盛。 同义替换： flourish,prosper 高中外研版 【核心词汇精讲】 选择性必修第二册 例句： Plants thrive in warm and sunny conditions. 真题链接：（外研版高中选择性必修第二册单元测试） With proper care,the young trees will in a few years. A.die B.thrive C.fall (答案：B) 9.invasion/n've3m/n.涌入 词义辨析： invasion:指“涌入、入侵”，既可指生物或物种的大量进入（如外来物种入侵），也可指军事入 侵。 ival:泛指“到达、到来”，强调某人或某物抵达某地，中性词，无负面含义。 同义替换： influx,intrusion 例句： The invasion of foreign species has damaged the local ecosystem. 真题链接：（外研版高中选择性必修第二册期中复习题） The of tourists in summer has brought both benefits and problems to the town A.invasion B.departure C.stay (答案：A) 10.f1oral/flrl/adj.花的 词义辨析： floral:指“花的、与花有关的”，侧重装饰或图案上的花卉元素，如floral dress(花裙子)、floral pattern（花卉图案)。 flowering:指“开花的”，强调植物处于开花阶段，如flowering plants(开花植物)。 同义替换 flowery,flower-decorated 例句： She wore a beautiful dress with a floral design. 真题链接：（外研版高中选择性必修第二册同步练习） The room was decorated with paintings and fresh flowers. A.floral B.plain C.simple (答案：A) 综合演练 4 高中外研版 【核心词汇精讲】 选择性必修第二册 综合练习 一、 单项选择 1.This species of bird has become increasingly due to habitat loss. A.common B.rare C.ordinary 2.The company plans to make a expansion into the Asian market next year. A.vast B.tiny C.small 3.It's not to leave your valuables unattended in crowded places. A.secure B.dangerous C.difficult 4. the team will finish the project ahead of schedule,but we need to confirm with the manager. A.Apparently B.Really C.Certainly 5.There are significant in dialects between northern and southern regions of the country. A.variation B.similarity C.equality 6.The government has taken measures to protect animals like the giant panda A.common B.endangered C.ordinary 7.Different ethnic groups have learned to peacefully in this multicultural city. A.coexist B.fight C.compete 8.With sufficient sunlight and water,the plants in the garden will quickly. A.die B.thrive C.fall J 高中外研版 【核心词汇精讲】 选择性必修第二册 9.The sudden of tourists during the holiday caused traffic jams in the area. A.invasion B.departure C.stay 10.The living room is decorated with curtains and fresh lilies. A.floral B.plain C.simple 二、根据句意及汉语提示完成单词 1.The museum displays many _(稀有的)artifacts from ancient civilizations.. 2.The (广阔的)grassland stretches as far as the eye can see. 3.We need to find a(安全的)location to store the confidential files.. _(显然)，the new policy has received widespread public support. 5.The (in temperature between day and night is quite large in the desert. 6.This area is home to several_(撷临灭绝的)species of plants. 7.Humans and wildlife should (in harmony with nature. 8.Children need a loving environment to (both physically and mentally. 9.The (of new technology has transformed the industry completely. 10.She wore a beautiful dress with a()pattern on her birthday. 三、用所给单词的适当形式填空 1.This is a (rarely)opportunity to study abroad,you shouldn't miss it. 2.The (vastly)majority of students support the new school policy. 3.The company provides(securely)employment contracts for all employees. (Apparent),he has made great progress in his English studies recently. 5.There are_ (vary)opinions on whether students should use smartphones at school. 6.Many (endanger)animals are protected by international laws. 6 高中外研版 【核心词汇精讲】 选择性必修第二册 7. The two communities have learned to (coexistence)peacefully for centuries. 8.The business began to(thriving)after introducing new management strategies. 9.The(invade)of foreign pests has damaged the local agricultural industry. 10.The room was filled with the sweet scent of (floral)arrangements. 四、完成句子（每空一词） 1.这种植物因为过度采摘而变得越来越稀有。 This kind of plant is becoming and due to over-picking. 2.我们应该努力与自然和谐共存。 We should strive to with nature in harmony. 3.据报道，这个国家有大量的自然资源。 that this country has natural resources. 4.为了保护濒临灭绝的物种，政府建立了许多自然保护区。 To protect _the government has set up many nature reserves. 5.适宜的气候条件使这些植物在这里茁壮成长。 The suitable climate conditions allow these plants to here. 五、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。 7 高中外研版 【核心词汇精讲】 选择性必修第二册 The Amazon rainforest is known for its(1) (vast/huge)biodiversity,home to countless species of plants and animals.However,some species are now (2) (endangered/dangerous)due to deforestation and climate change.For example,the golden lion tamarin,a small monkey with a bright orange mane,is one of the most(3)(rare/scarce)primates in the world. Local communities and environmentalists are working to protect these animals.They believe that hu- mans and wildlife can (4)(coexist/exist)if proper measures are taken.Efforts include creating protected areas and promoting sustainable farming practices.(5)(Apparently/Obviously), these actions have helped some species(6)(thrive/grow)again.For instance,the number of golden lion tamarins has increased in recent years,thanks to conservation programs. The(7) (variation/difference)in climate patterns has also affected the rainforest.Scientists are studying these changes to better understand their impact on the ecosystem.They warn that without further action,the(8) (invasion/arrival)of non-native species could disrupt the delicate balance of the rainforest. 参考答案 I.单项选择 1B2.A3.A4.A5.A6B7.A8.B9.A10.A IⅡ.根据句意及汉语提示完成单词 1.rare 2.vast 3.secure 4.Apparently 5.variation 6.endangered 7.coexist 8.thrive 9.invasion 10.floral I用所给单词的适当形式填空 1.rare 2.vast 3.secure 4.Apparently 5.various 6.endangered 7.coexist 8.thrive 9.invasion 10.floral V.完成句子 1.more;more rare 2.coexist together 3.It is reported;vast 4.endangered species 5.thrive V.语篇填空 1.vast 2.endangered 3.rare 4.coexist 5.Apparently 6.thrive 7.variation 8.invasion P