Unit 5 A delicate world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 5 A delicate world 词汇变形及词缀精讲 全部单元单词 rare /rea(r)/adj.稀有的，罕见的变化 elsewhere/,els'wea)/adv.在别 biological/,ba3'lDd3k/adj.生thrive/rarv/v.茁壮成长 处 物的，与生物有关的 fossil/'fDsl/n.化石 invasion/m've3m/n.涌入 apparently /a'per3ntli/adv.据floral/'flor/adj.花的 coexist/,kaoig'zIst/V.共存，共 说：看来，似乎 vertebrate/'v3tbrt/n.脊椎动处 vast /va:st/adj.巨大的；广大的物 secure/sr'kja)/adj.稳固的： altitude/'eltrtju:dn.海拔（高beehive/bi:harv/n.蜂房，蜂箱安全的 度) endangered/m'demd3ad/adj.濒greeting/'gri:t/n.问候，招呼 variation/,veari'en/n.差异；临灭绝的 词汇变形及词缀精讲 1.biological/,ba'lDd3kl/adj.生物的，与生物有关的 词汇变形 名词形式：biology（生物学) 构词解析 前缀bio-:表“生命、生物”；后缀logy:表“学科”；-ical构成形容词，表“…的”。 同类词：geological(地质的)←-geology(地质学) 例句：The biological diversity of the rainforest is amazing 真题链接（外研版高中选择性必修第二册同步练习)：The study of (biology)processes helps us understand how living things work.(答案：biological) 2.endangered/m'demd3 ad/adj.濒临灭绝的 词汇变形 动词形式：endanger(危害，使濒危) 构词解析 前缀en-:表“使…处于某种状态”；后缀-ed:构成形容词，表“处于…状态的”。 固定搭配：endangered species(濒危物种) 例句：Many endangered animals are protected in nature reserves. 真题链接（外研版高中选择性必修第二册教材例句）：We should take action to save endangered plants and animals 高中外研版 【词汇精讲】 选择性必修第二册 3.variation/,veari'eufn/n.差异：变化 词汇变形 动词形式：vay(变化，改变) 形容词形式：various（各种各样的) 构词解析 前缀vari-:表“变化”；后缀-ation:构成名词，表“动作或状态”；-ous:构成形容词。 例句：There is a great variation in climate between the north and south, 真题链接（外研版高中选择性必修第二册同步练习）：Prices of vegetables (variation)with the seasons.(答案：vary) 4.invasion/m've3n/n.涌入；入侵 词汇变形 动词形式：invade(入侵，涌入) 构词解析 前缀in-:表“进入”；后缀-sion:构成名词，表“动作或过程”。 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同步练习）：The army (invasion)the city and took control of it.(答案：invaded) 5.coexist/kaoIg'zIst//V.共存，共处 词汇变形 名词形式：coexistence(共存) 构词解析 前缀co-:表“共同”；exist(存在)：后缀-ence:构成名词。 例句：Humans and nature should coexist harmoniously. 真题链接（外研版高中选择性必修第二册教材例句）：The two communities have learned to coexist peacefully. 6.secure/s'kja)/adj.稳固的；安全的 词汇变形 动词形式：secure(保护，使安全) 名词形式：security(安全，保障) 构词解析 前缀se-:表“分开、离开”：cure(照料)：后缀ity:构成名词，表“性质、状态”。 例句：We need to secure the door before leaving. 真题链接（外研版高中选择性必修第二册同步练习)：The government is working to improve national (secure)).（答案：security) 7.floral/'flo:ral/adj.花的 词汇变形 名词形式：flower（花) 构词解析 2 高中外研版 【词汇精讲】 选择性必修第二册 词根flor-:表“花”：后缀-al:构成形容词，表“…的”。 同类词：natural(自然的)←-nature（自然) 例句：The room was decorated with beautiful floral patterns. 真题链接（外研版高中选择性必修第二册同步练习）：The (floral)design on the dress is very attractive.(（答案：floral) 8.vertebrate/'v3tbrt/n.脊椎动物 词汇变形 形容词形式：vertebrate(脊椎的)：反义词：invertebrate(无脊椎动物) 构词解析 词根vertebr-:表“脊椎”；后缀-ate:构成名词或形容词；前缀in-:表“无、非”（反义前缀）。 例句：Mammals,,birds,.and fish are all vertebrates. 真题链接（外研版高中选择性必修第二册教材例句)：Vertebrate animals have a backbone,while invertebrates do not 9.greeting/grit/n.问候，招呼 词汇变形 动词形式：greet(问候，迎接) 构词解析 后缀ig:加在动词后构成名词，表“动作或行为”。 例句：She sent her greetings to all her friends 真题链接（外研版高中选择性必修第二册同步练习)：H (greeting)us with a warm smile when we arrived.(答案：greeted) l0.apparently /3'aranti/adv.据说；看来，似乎 词汇变形 形容词形式：apparent(明显的，表面上的) 构词解析 前缀ap-:表“加强”；词根parent--:表“出现”；后缀-y:构成副词。 例句：Apparently,he has already left for Beijing, 真题链接（外研版高中选择性必修第二册同步练习）：It was一(apparently)that she was not interested in the topic.(答案：apparent) 综合训练 一、 根据句意及汉语提示完成单词 6.The government is working to protect (颜危的)species from extinction, 7.There is a wide_ (in the cultural traditions of different regions. 8.The illegal (of wild animals has disrupted the local ecosystem. 高中外研版 【词汇精讲】 选择性必修第二册 9 (checks are necessary before entering the airport. 10.The garden is filled with beautiful (花的)decorations for the festival. 二、用所给单词的适当形式填空 5.The (biology)research on plant growth has made great progress. 6.Many species are in danger because their habitats are being (endanger). 7.The climate in this area(variation)greatly between summer and winter. 8.The (invade)of foreign plants has caused serious environmental problems. 9.Humans and animals should learn to(coexist)in harmony 10.She felt (secure)after locking all the windows before leaving 三、完成句子（每空一词） 1.热带雨林的生物多样性令人惊叹。 The of the rainforest is amazing 2.我们必须采取行动拯救濒危动植物。 We must take action to save plants and animals. 3.价格随季节变化是很正常的。 It is normal for prices to with the seasons. 4.两国人民学会了和平共处。 The people of the two countries have learned to 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。 The study of (biology)processes helps us understand how living things work.Many (endanger)species are facing threats due to habitat loss and foreign species(invade).The cli- mate (variation)across different regions,which affects the distribution of plants and animals. To ensure their survival,we need to(secure)their natural habitats and promote (coex- ist)between humans and nature. (apparent),protecting biodiversity is crucial for a balanced ecosystem. 高中外研版 【词汇精讲】 选择性必修第二册 参考答案 I根据句意及汉语提示完成单词 6.endangered 7.variation 8.invasion 9.Security 10.floral Ⅱ用所给单词的适当形式填空 5.biological 6.endangered 7.varies 8.invasion 9.coexist 10.secure I.完成句子 1.biological diversity 2.endangered 3.vary 4.coexist peacefully V.语篇填空 1.biological 2.endangered 3.invasion 4.varies 5.secure 6.coexistence 7.Appar- ently 5