Unit 2 Communication-2025-2026学年八年级下册英语词汇变形及词缀精讲（北师大版）

8年级下册北师大版 【词汇精讲】 Unit 2 Communication 词汇精讲 【Unit2】Communication 词汇变形及词缀精讲 全部单元单词 interested/'ntrastId/adj.感兴趣明；教养 value'vaelju:/n.价值；重要性： 的：关心的 correct/ka'rekt/adj.正确的：恰价值观V.重视：珍视：估价 missing/'misr/ad.丢失的：失当的v.纠正：批改 private/prarvat/adj.私人的：私 踪的：缺少的 shy小a/ad.害羞的：腼腆的：密的：私有的 discover/d'sk△var)/v.发现：发胆怯的 against/A'genst/prep.反对；违 觉：了解 treat /tri:t/v.对待：治疗：款待反；靠着：逆 gentleman/d3 entlman/n.绅士；n.款待；乐事 such as/sAt∫ez短语例如；像 先生：有教养的人 increase rapidly /m'kris…这样 knowledge'nDld3n.知识；学'raepidli/短语迅速增长；快速lead to /li:dtu/短语导致；通向 问：认识 增加 wherever /wear'eva(r)/adv. trainer/'trema)/n.训练员；教monthly/'mnθli/adj.每月的；conj.无论哪里；无论什么地方 练；运动鞋 每月一次的adv.每月：每月 culture/'klt(r)/n.文化：文次n.月刊 词汇变形及词缀精讲 l.interested/ntr3strd/adj.感兴趣的；关心的 动词形式：interest(使感兴趣) 名词形式：interest(兴趣；利益) 反义词：uninterested(不感兴趣的) 构词解析：后缀-ed:加在动词后构成形容词，表“感到…的”（修饰人）；对应的ig形式为 interesting(有趣的，修饰物)。 例句：She is interested in painting and spends two hours on it every day. 真题链接（北师大版八年级下册同步练习）：This storybook is so (interest)that all the students want to read it.(答案：interesting) 2.missing/'msm/adj.丢失的：失踪的：缺少的 动词形式：miss(错过；想念：丢失) 名词形式：loss(损失，丢失) 构词解析：后缀-g:加在动词后构成形容词，表“处于…状态的”，强调“未被找到的”。 8年级下册北师大版 【词汇精讲】 Unit 2 Communication 例句：The police are still looking for the missing child in the forest. 真题链接（北师大版八年级下册单元测试)：My keys were (miss)yesterday,but I found them under the sofa this morning.(答案：missing) 3.discover/d'skAva()/V.发现：发觉：了解 名词形式：discovery 形容词形式：discoverable(可发现的) 构词解析：前缀dis-:表“相反；除去”；cover意为“覆盖”，discover即“揭开覆盖物→发现”；后 缀-y将动词变为名词。 例句：Columbus discovered America in 1492. 真题链接（北师大版八年级下册阅读填空）：The (discover)of electricity changed the world completely.（答案：discovery) 4.knowledge/'nplid3/n.知识；学问；认识 形容词形式：knowledgeable(知识渊博的) 构词解析：词根kmow（知道)：后缀-ledge构成名词；-able加在名词后构成形容词，表“有…能 力的”。 例句：Reading books can increase our knowledge about the world. 真题链接（北师大版八年级下册同步练习）：Our science teacher is very(knowledge)and we all like asking him questions.(答案：knowledgeable) 5.correct/k'rekt/adj.正确的：恰当的v.纠正；批改 副词形式：correctly 名词形式：correction 反义词：incorrect(错误的) 构词解析：前缀cor-(表“完全”)+ct(词根，意为“直的”)，字面义“完全直的→正确的”；后 缀-y构成副词，-ion构成名词。 Please correct the mistakes in your composition before handing it in. 真题链接（北师大版八年级下册语法填空）：You answered the question」 (correct),so you got full marks.(答案：correctly) 6.treat/tri:t/v.对待：治疗；款待n.款待；乐事 名词形式：treatment(治疗；对待) 形容词形式：treatable(可治疗的) 构词解析：后缀-ment加在动词后构成名词，表“行为或结果”；-able表“可…的”。 The doctor treated his illness with traditional Chinese medicine. 真题链接（北师大版八年级下册完形填空）：The__(reat)for this disease usually takes about three months.(答案：treatment) 7.monthly/mn0li/adj.每月的：每月一次的adv.每月；每月一次n.月刊 名词形式：month 构词解析：名词nonth（月)+后缀-y,构成形容词/副词/名词，表“每…的/地/物”。 8年级下册北师大版 【词汇精讲】 Unit 2 Communication 同类词：daily(每日的)、weekly(每周的) 例句：My parents receive a monthly magazine about gardening 真题链接（北师大版八年级下册词汇运用）：We have a(month)test on the last Friday of each nonth.(答案：monthly) 8.value'vaelju:/n.价值；重要性；价值观V.重视：珍视：估价 形容词形式：valuable(有价值的) 反义词：valueless(无价值的) 构词解析：后缀-ble加在动词后构成形容词，表“具有…价值的”。 例句：Time is more valuable than money,.so we should not waste it. 真题链接（北师大版八年级下册阅读理解）：These old stamps are very. (value)to collectors. 案：valuable) 9.private/'prarvat/adj.私人的；私密的；私有的 副词形式：privately 名词形式：privacy(隐私) 反义词：public(公共的) 构词解析：前缀pri-(表“首要的；个人的”)+后缀-ate(构成形容词)：-ly构成副词；-acy构成 名词。 例句：It's impolite to ask others about their private life. 真题链接（北师大版八年级下册补全对话）：We need a_(private)room for the meeting because we will discuss some secret plans..(答案：private) 10.against/月'gnst/prep.反对；违反；靠着；逆 动词形式：oppose(反对，较正式) 反义词：for(支持) 构词解析：前缀a-（表“朝向”)+gainst（古英语，意为“相反”)，合为“反对；逆着”。 固定搭配：be against(反对)；play against(与…比赛) 例句：My parents are against staying up late to play computer games. 真题链接（北师大版八年级下册情景交际)：Most students are__(against)the new rule of wearing school uniforms every day..(答案：against) ll.wherever /wear'eva(r)/adv.&conj.无论哪里；无论什么地方 拆分解析：where(哪里)+ever（后缀，表“无论…”) 同类词：whenever(无论何时)、whoever(无论是谁) 构词解析：复合词，由疑问词+ever构成，引导让步状语从句或名词性从句。 例句：You can sit wherever you like in the classroom, 真题链接（北师大版八年级下册语法填空）：(wherever)you go,remember to call your parents and tell them you are safe.(答案：Wherever) 3 8年级下册北师大版 【词汇精讲】 Unit 2 Communication 综合训练 一、 根据句意及汉语提示完成单词 1.The police are still searching for the (失踪的)child in the park. 2.We should protect our personal (隐私)in the digital age,. 3.The (of new energy sources will solve many environmental problems. 4.His (of history helped him win the quiz competition. 5.The (for this illness requires patience and careful care. 6.Our school holds a(每月的)English corner on the first Friday.. 二、用所给单词的适当形式填空 1.She is (interest)in space science and reads books about it every day. 2.This antique watch is very(value)and has been kept for over a century. 3.The teacher praised him for answering the question (correct) 4.The (discover)of penicillin saved millions of lives in history. 5.My uncle is a(knowledge)engineer who can solve complex problems. 6.We need to make a (decide)before the meeting ends tomorrow. 7.The (treat)of the injured animals was carried out by volunteers. 三、完成句子（每空一词） 1.他反对在公共场所吸烟。 He is smoking in public places. 2.无论你去哪里，保持联系很重要。 you go,it's important to keep in touch. 3.这本小说很有趣，我对它非常感兴趣。 This novel is very and I am it. 4.她的私人收藏包括许多有价值的画作。 Her includes many paintings. 4 8年级下册北师大版 【词汇精讲】 Unit 2 Communication 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。 Tom has a (month)magazine about science.He is deeply (interest)in space explo- ration.Last month,he read an article about the (discover)of a new planet.The article was written by a (knowledge)scientist who has done research for over 20 years. Tom shared the article with his classmates.They had a (heat)discussion and even argued (against)some ideas in it.The teacher said their questions showed they were thinking (careful).She told them that (correct)information comes from questioning and exploring. 参考答案 I.根据句意及汉语提示完成单词 1.missing 2.privacy 3.discovery 4.knowledge 5.treatment 6.monthly Ⅱ.用所给单词的适当形式填空 1.interested 2.valuable 3.correctly 4.discovery 5.knowledgeable 6.decision 7. treatment I.完成句子 1.against;smoking 2.Wherever;you 3.interesting;interested,in 4.private;collection; valuable V.语篇填空 1.monthly 2.interested 3.discovery 4.knowledgeable 5.heated 6.against 7 carefully 8.correct 5