Unit 3 Conservation Topic Talk-2025-2026学年高中英语词汇变形及词缀精讲选择性必修第一册（北师大版）

高中选修1北师大版 【寒假专版】 词汇变形及词缀精讲 寒假专版 【Unit3】Conservation Topic Talk 词汇变形及词缀精讲 全部单元单词 conservation/konsa'ven/n.保教育意义的：知识性强的 *horn /ho:n/n.(牛、羊等头上 执 threat/ret/n.威胁；（灾难等坏的）角 destroy /d'stro/t.破坏；毁掉 事)发生的可能 extinct/ik'stkt/adj.灭绝的，绝 plastic/'plaestik/adj.塑料制的 switch/swt/vi.&t.转换，改种的 *mining/mam)/n.采矿业 变 incredibly /in'kredabli/adv. item/'atam/n.一项，一条 have a role起某种作用 常地，极端地 recycle/ri:'saik/V.&t.再利do one's part尽自己的职责 urgent/'3:d3ant/adj.紧急的，急 用，回收利用 *rhino/'rama/n.犀牛 迫的 unrecyclable/,nri:'saiklabl/adj.illegally'li:gali/adv.非法地， 不可回收的 违法地 informative/m'fo:matrv/adj.有hunt /hAnt/vi.&t.猎取，猎杀 词汇变形及词缀精讲 1.conservation/,konsa'vei/n/n.保护 动词形式：conserve 构词解析：前缀con-:表”共同、一起”；后缀-ation:加在动词后构成名词，表动作、过程或结 果”。 同类词：information(信息)、education(教育) Water conservation is becoming increasingly important in many dry regions. 真题链接（北师大版高中选修l同步练习）：We should take measures to promote the (conserve) of natural resources..(答案：conservation) 2.destroy/d'stro/vt.破坏；毁掉 名词形式：destruction 形容词形式：destructive 构词解析：前缀de-:表”否定、相反”；后缀-tion:构成名词：ive:构成形容词，表”具有…性 质的”。 同类词：instruct(指导)→instruction(指示)→instructive(有启发性的) 例句：The earthquake destroyed thousands of homes in the area. 1 高中选修1北师大版 【寒假专版】 词汇变形及词缀精讲 真题链接（北师大版高中选修1教材例句）：Human activities have caused the destruction of many forests. 3.plastic/'plaestrk/adj.塑料制的；n.塑料 名词复数：plastics(表示”塑料学”或”塑料制品”时) 构词解析：后缀-c:加在名词后构成形容词，表”与…有关的”。 同类词：electric(电的)、historic(历史的) 例句：We should reduce the use of plastic bags to protect the environment. 真题链接（北师大版高中选修1同步练习)：This bottle is made of_(plastic),soit's lightweight (答案：plastic) 4.ecycle/,ri:'sakl/v.&t.再利用，回收利用 名词形式：recycling 形容词形式：recyclable 构词解析：前缀re:表”重复、再”；后缀-ing:构成名词（表动作或过程）-able:构成形容词，表” 可…的”。 同类词：reuse(再利用)reuse(名词)、readable（易读的) 例句：We should recycle paper and glass to save resources. 真题链接（北师大版高中选修I同步练习）：These bottles are(recycle),so please put them in the blue bin.(答案：recyclable) 5.unrecyclable/,ri:'saiklabl/adj.不可回收的 反义词：recyclable 构词解析：前缀un-:表”否定”；recyclable(可回收的)去掉否定前缀un-即为反义词。 同类词：unhappy(不开心的)、uncomfortable(不舒服的) Styrofoam is usually unrecyclable and causes environmental problems. 真题链接（北师大版高中选修I教材例句）：Unrecyclable waste should be disposed of properly to avoid pollution 6.informative/n'fmtv/adj.有教育意义的；知识性强的 动词形式：inform 名词形式：information 构词解析：前缀in-:表”进入、使”；后缀-ative:构成形容词，表”具有…性质的”；-ation:构成 名词。 同类词：communicate(交流)→communicative(爱说话的)、education(教育)→educational(教 育的) The documentary was very informative and taught us a lot about wildlife 真题链接（北师大版高中选修1同步练习)：This book provides_(inform)about environmental protection.(答案：information) 7.threat/ret/n.威胁：（灾难等坏事）发生的可能 动词形式：threaten 高中选修1北师大版 【寒假专版】 词汇变形及词缀精讲 形容词形式：threatening 构词解析：后缀-n:加在名词后构成动词，表’使”；-ing:构成形容词，表”令人…的”。 同类词：strength（力量)→strengthen（加强)、fright(恐惧)→frightening(吓人的) 例句：Pollution poses a serious threat to marine life. 真题链接（北师大版高中选修1教材例句）：The company threatened to close down if the situation didn't improve. 8.switch/switf/vi..&t.转换，改变；n.开关 过去式/过去分词：switched 现在分词：switching 构词解析：无明显前后缀，属于基础动词，变形规则为规则变化（直接加-d-ing)。 例句：She switched on the light and began to read.. 真题链接(（北师大版高中选修1同步练习)：Please(switch)off the TV when you leave the room, (答案：switch) 9.illegal'li:gal/ad.非法的，违法的 副词形式：illegally 反义词：legal(合法的) 构词解析：前缀-：表”否定”（用于以1开头的词前）：后缀-y:构成副词。 同类词：illogical(不合逻辑的)、legal(合法的)→legally(合法地) 例句：Illegal hunting has led to a sharp decrease in rhino numbers. 真题链接（北师大版高中选修1同步练习）：It is (legal)to sell protected animal products.(答 案：illegal) l0.hunt /hAnt/vi.&t.猎取，猎杀：n.打猎 名词形式：hunter(猎人) 现在分词：hunting 构词解析：后缀-r:加在动词后构成名词，表”做…的人”。 同类词：teach(教)→teacher(教师)、work(工作)→worker(工人) 例句：Poachers hunt rhinos for their horns,which are sold illegally. 真题链接（北师大版高中选修1教材例句）：The hunter was arrested for illegal hunting in the nature reserve 11.extinct/k'stkt/adj.灭绝的，绝种的 名词形式：extinction 构词解析：前缀ex-:表”出、完全”：后缀-tion:加在动词后构成名词（此处动词为extinct,较少 用，名词形式更常见)。 同类词：exist(存在)→existence(存在)、predict(预测)→prediction(预测) 例句：Many species have become extinct due to habitat loss. 真题链接（北师大版高中选修1同步练习）：The(extinct)of dinosaurs happened millions of years ago.（答案：extinction) 3 高中选修1北师大版 【寒假专版】 词汇变形及词缀精讲 l2.urgent/'3d3ant/adj.紧急的，急迫的 名词形式：urgency 副词形式：urgently 构词解析：后缀-et:构成形容词：-ency:对应的名词后缀；-y:构成副词。 同类词：different(不同的)→difference(差异)、fluent(流利的)→fluently(流利地) 例句：It is urgent to take action to protect endangered species. 真题链接（北师大版高中选修1同步练习）：The doctor said the patient needed (urgent)treatment. (答案：urgent) 综合训练 一、根据句意及汉语提示完成单词 6.The government has taken measures to promote the (保护）)of wild animals. 7.The storm caused serious (破坏)to the village last night 8.We should reduce the use of()products to protect the environment. 9 (回收利用)helps save resources and reduce pollution 10.The documentary provides (信息)about endangered species. 二、用所给单词的适当形式填空 6.These materials are (recycle),so please put them in the recycling bin. 7.Illegal hunting has led to the(extinct)of some species. 8.It is (urge)to take action to protect our planet 9.The (hunt)was caught for killing protected animals. 10.The factory was criticized for its (destroy)effect on the environment. 三、完成句子（每空一词) 4.节约水资源在干旱地区越来越重要。 Water is becoming increasingly important in dry regions 5.人类活动对海洋生物构成了严重威胁。 Human activities pose a serious to marine life. 4 高中选修1北师大版 【寒假专版】 词汇变形及词缀精讲 6.请离开房间时关掉灯。 Please off the lights when you leave the room 7.这种塑料袋是不可回收的，会造成环境问题。 This kind of plastic bag is and causes environmental problems. 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。 Environmental protection is an important issue today.We need to pay attention to the (con- serve)of natural resources.Some human activities,such as illegal(hunt)and deforestation, have caused great (destroy)to the environment.To solve these problems,we should (recycle)more and reduce the use of(plastic)bags.We should also avoid buying products made from (endanger)animals.It is (urge)that everyone takes action to protect our planet before more species face (extinct). 参考答案 I.根据句意及汉语提示完成单词 6.conservation 7.destruction 8.plastic 9.Recycling 10.information Ⅱ.用所给单词的适当形式填空 6.recyclable 7.extinction 8.urgent 9.hunter 10.destructive II.完成句子 4.conservation 5.threat 6.switch 7.unrecyclable V语篇填空 1.conservation 2.hunting 3.destruction 4.recycle 5.plastic 6.endangered 7 urgent 8.extinction 5