Unit 3 Conservation Lesson1-2025-2026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 【词汇精讲】 Unit 3:Conservation 词汇精讲 Unit 3:Conservation Lesson 1 词汇变形及词缀精讲 全部单元单词 die out消失：绝迹，灭绝 形形色色的 endangered /m'demd3ad/adj. species/'spi:i:z/n.物种，种 asteroid/'aestaroId/n.小行星 危的 wipe /warp/vt.擦；拭 decrease/d'ki:s/n.减少：减少solar/'sala/ad.太阳光（能）的 wipe out彻底毁灭 的量；vi.&vt.减少 hatch /haet/i.&t.(使)孵化 unusual/n'ju:3lal/adj.异常的；blame /blemm/v.责怪，指责 restore /r'st:/t.(使)恢复 不平常的 be to blame(对某事)负有责任 mass /mas/adj.大量的 affect/a'fekt/t.影响 varied/'vearid/adj.各种各样的，be at risk处境危险，受到威胁 词汇变形及词缀精讲 1.species/'spi:ji:z/n.物种，种 词汇变形 单复数同形：species(单数)；species(复数) 构词解析 无明显前后缀，源自拉丁语”species”"(种类、外貌)。 同类词：sheep(绵羊)、deer(鹿)（单复数同形） 例句：This rare species of bird is only found in the deep forest. 真题链接（北师大版高中选修1同步练习)：Many (species)are in danger of dying out due to habitat loss.(答案：species) 2.unusual/n'ju:3al/adj.异常的；不平常的 词汇变形 反义词：usual(平常的) 副词形式：unusually 构词解析 前缀un-:表”否定”，加在形容词前构成反义词：后缀-ual:构成形容词。 同类词：unhappy(不开心的)、unfair(不公平的) 例句：It's unusual for him to arrive late-一he's always on time. 真题链接（北师大版高中选修I教材例句)：The weather this summer is unusually cold compared to last year. 1 高中选修1北师大版 【词汇精讲】 Unit 3:Conservation 3.mass/maes/adj.大量的：n.团，块 词汇变形 动词形式：mass(聚集，集结) 副词形式：massively(大量地) 构词解析 无明显前后缀，多词性转换。 例句：A mass of dark clouds appeared in the sky,.and it soon rained heavily 真题链接（北师大版高中选修1同步练习）：The company has made (mass)profits from the new product.(答案：massive) 4.decrease/d'kri:svi.&t.减少：n.减少 词汇变形 反义词：increase(增加，vn.) 形容词形式：decreasing(减少的) 构词解析 前缀de-:表”向下、减少”；-crease源自拉丁语'crescere'”(生长)，合意为”使生长减少”。 The number of students in this school has decreased by 20%in the past five years. 真题链接（北师大版高中选修1教材例句）：We need to take action to prevent the decrease of forest areas 5.blame /bleim/v.责怪；n.责备 词汇变形 形容词形式：blameless（无过错的) 构词解析 后缀lss:表”无…的”，加在名词后构成形容词，含否定意义。 同类词：homeless(无家可归的)、careless(粗心的) 例句：Don't blame him for the mistake-he didn't do it on purpose.. 真题链接（北师大版高中选修1同步练习）：She felt (blame)for not taking good care of her little sister.(答案：to blame) 6.affect/A'fekt/vt.影响 词汇变形 名词形式：effect(影响，效果) 形容词形式：effective(有效的) 构词解析 无明显前后缀，注意与名词'effect''的区别(affect=have an effect on)。 例句：Smoking can seriously affect your health 真题链接（北师大版高中选修1同步练习）：The new policy will have a great (affect)on the local economy.(答案：effect) 7.endangered/m'demd3d/adj.撷危的 词汇变形 2 高中选修1北师大版 【词汇精讲】 Unit 3:Conservation 动词形式：endanger(使濒危，危害) 名词形式：danger(危险) 构词解析 前缀en-:表”使…处于某种状态”；后缀-d:构成形容词，表”处于…状态的”。 同类词：encourage(鼓励)、enlarge(扩大) 例句：Pandas are one of the most endangered species in the world. 真题链接（北师大版高中选修1教材例句）：Human activities have endangered many wild animals and plants. 8.solar/'sawl/adj.太阳光（能）的 词汇变形 名词形式：sun（太阳) 构词解析 前缀sol-:源自拉丁语”so”（太阳)，-ar为形容词后缀，表”与…有关的”。 同类词：lunar(月亮的)、stellar(恒星的) 例句：Solar energy is a clean and renewable source of power. 真题链接（北师大版高中选修1同步练习）：Many houses in this area use(solar)panels to generate electricity..（答案：solar) 9.restore/rI'sto:/t.恢复 词汇变形 名词形式：restoration(恢复，修复) 形容词形式：restored(恢复的) 构词解析 前缀r-:表”再、重新；-store源自拉丁语”stare”(站立)，合意为”使重新站立”，即”恢复”。 同类词：rebuild(重建)、reuse(重复使用) The government is trying to restore the old temple to its original beauty. 真题链接（北师大版高中选修1教材例句）：After the storm,workers worked hard to restore power to the city. l0.varied'vearid/adj..各种各样的 词汇变形 动词形式：vay(变化，改变) 名词形式：variety（多样性) 构词解析 后缀-ed:加在动词后构成形容词，表”已完成的动作或状态”：-vay源自拉丁语”variare'”(变化)。 同类词：excited(兴奋的)、interested(感兴趣的) The menu offers a varied selection of dishes from different countries. 真题链接（北师大版高中选修1教材例句）：Her interests are varied,including painting,music,and sports l1.asteroid/'aestaroid/n.小行星 3 高中选修1北师大版 【词汇精讲】 Unit 3:Conservation 构词解析 前缀astro--:表”星星、宇宙”（源自希腊语”astron'”):-oid表”类似…的形状”，合意为”类似星星 形状的物体”。 同类词：planetoid(类行星)、meteoroid(流星体) Scientists are studying an asteroid that might pass close to Earth next year. 真题链接（北师大版高中选修1同步阅读）：The extinction of dinosaurs is believed to have been caused by an (asteroid)impact.(答案：asteroid) 综合训练 一、 根据句意及汉语提示完成单词 6.The number of this (物种)has decreased rapidly in recent years. 7.Itis (不平常的)for her to stay up late because she always goes to bed early 8.A (大量的)amount of money was spent on the project, 9.We need to take action to stop the (减少)of natural resources.. 10.The government is trying to. (恢复)the damaged ecosystem. 二、用所给单词的适当形式填空 6.Many(species)are in danger of dying out due to habitat loss 7.The weather this summer is(usual)hot compared to last year. 8.The company has made (mass)profits from the new product. 9.The number of students in this school has(decrease)by 10%this year. 10.She felt (blame)for the accident 11.The new policy will have a great (affect)on the environment. 12.We must protect (endanger)animals like pandas. 13.The menu has a(vary)of dishes from different countries 14. (solar)energy is becoming more and more popular. 三、完成句子（每空一词) 4 高中选修1北师大版 【词汇精讲】 Unit 3:Conservation 1.这个地区有各种各样的物种。 There are 0 in this area. 2.他的缺席使老师很生气。 His the teacher very angry. 3.吸烟严重影响健康。 Smoking health 4.政府正在努力恢复森林。 The government is trying to the 5.这个濒危物种需要我们的保护。 This needs our protection. 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。 Our planet is home to many (species).However,some of them are becoming (endanger) due to human activities.For example,the(mass)cutting down of trees has destroyed their habitats.The number of these animals has been(decrease)year by year.We should not (blame)others only,instead,we should take action.We can use (solar)energy to reduce pollution and help (restore)the environment.With (vary)efforts,we can make a difference. 参考答案 I.根据句意及汉语提示完成单词 6.species 7.unusual 8.mass 9.decrease 10.restore Ⅱ.用所给单词的适当形式填空 6.species 7.unusually 8.massive 9.decreased 10.to blame 11.effect 12.endan- gered 13.variety 14.Solar II完成句子 1.a variety;species 2.absence made 3.affects;seriously 4.restore;forest 5.endangered species V.语篇填空 1.species 2.endangered 3.massive 4.decreasing 5.blame 6.solar 7.restore 8 5 高中选修1北师大版 【词汇精讲】 Unit 3:Conservation varied 6