Unit 6 Detectives-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 【Unit6】 词汇变形及词缀精讲 Unit6】Detectives 词汇变形及词缀精讲 全部单元单词 humorous/'hju:maras/adj.幽默来：不久前 create/kri'etw.创造：创作；创 的：诙谐的 reappear/ria'pIa(r)/w.再次出建；引起 degree/d'gri/n.度；度数；学现；重新露面 wealthy/'wel0i/ad.富有的；富 位：程度 impossible/m'ppsabl/adj.不可裕的：富饶的 unclear/,n'kla/adj.不清楚 能的：办不到的：难以忍受的 education/edu'keifn/n.教育： 的：模糊的：不明朗的 exactly /ig'zaektli/adv.确切地；培养；教育学 truth /tru:θ/n.真相；实情：事精确地：正好：完全正确 实；真理 thirsty/'3sti/adj.口渴的；渴望 recently/'ri:sntli/ad.最近；近的 词汇变形及词缀精讲 1.humorous/'hju:mer3s/adj.幽默的；诙谐的 词汇变形 名词形式：humor(美式)/humour(英式) 构词解析 后缀-0uS:加在名词后，构成形容词，表”具有…性质的”。 同类词：dangerous(危险的)、famous(著名的) 例句：The humorous story made all of us laugh loudly.(北师大版八年级下册同步练习) 真题链接（北师大版八年级下册单元测试）：My uncle is a_ (humor)man.He always tells funny stories at family parties.(答案：humorous) 2.unclear/,n'klIa)/a.不清楚的；模糊的 词汇变形 反义词：clear(清楚的) 副词形式：unclearly 构词解析 前缀un-:加在形容词前，构成反义词，表”不”；后缀-y构成副词。 同类词：unhappy(不开心的)、unfair(不公平的) 例句：His handwriting is unclear,.so I can'tread his notes.(北师大版八年级下册教材例句) 真题链接（北师大版八年级下册同步练习)：The instructions were(clear),so many students couldn’t finish the task.(答案：unclear) 1 8年级下册北师大版 【Unit6】 词汇变形及词缀精讲 3.impossible/m'ppsabl/adj.不可能的：办不到的 词汇变形 反义词：possible(可能的) 副词形式：impossibly 名词形式：impossibility 构词解析 前缀im-:加在以”p”开头的形容词前，表”不”（否定前缀）：后缀-ible构成形容词；-ity构成 名词。 同类词：impolite(不礼貌的)、impatient(不耐烦的) 例句：It's impossible to finish the work in such a short time..(北师大版八年级下册教材例句) 真题链接（北师大版八年级下册单元测试）：一Can you finish the project by Friday?一It's (possible),butI'lltry my best..(答案：impossible) 4.exactly1g'zaektli/adv.确切地：精确地 词汇变形 形容词形式：exact(确切的) 构词解析 前缀x-:表”完全、彻底”；后缀-y构成副词。 例句：Can you tell me exactly when the meeting will start?(北师大版八年级下册同步练习) 真题链接（北师大版八年级下册单元测试)：-Is this the right answer?一 (exact))！You got it. (答案：Exactly) 5.thirsty/'03:sti/adj.口渴的：渴望的 词汇变形 名词形式：thirst(口渴；渴望) 构词解析 后缀y:加在名词后，构成形容词，表”充满…的：具有…性质的”。 同类词：angry(生气的)、cloudy（多云的) 例句：After running for an hour,I felt very thirsty.(北师大版八年级下册教材例句) 真题链接（北师大版八年级下册同步练习）：The little girl is(thirst)for knowledge and reads every day.(答案：thirsty) 6.wealthy/'welθiadj.富有的：富裕的 词汇变形 名词形式：wealth(财富) 比较级：wealthier 最高级：wealthiest 构词解析 后缀-y:加在名词后，构成形容词，表”充满…的”。 同类词：healthy(健康的)、lucky(幸运的) 例句：The wealthy man donated a lot of money to the poor..(北师大版八年级下册同步练习) 真题链接（北师大版八年级下册单元测试）：In the past,only a few people were (wealth),but 2 8年级下册北师大版 【Unit6】 词汇变形及词缀精讲 now more families have a better life.(答案：wealthy) 7.education/,ed3u'ken/m.教育；培养 词汇变形 动词形式：educate(教育；培养) 形容词形式：educational(有教育意义的) 构词解析 前缀e-:表”出”；词根duc表”引导”；后缀-ation构成名词；-al构成形容词。 同类词：information(信息)←-inform(通知)、invitation(邀请)←-invite(邀请) 例句：Education is very important for a country's development.(北师大版八年级下册教材例句) 真题链接（北师大版八年级下册同步练习)：Parents should (education)their children to be kind to others..(答案：educate) 8.reappear/,ri:a'pIe(r)/w.再次出现；重新露面 词汇变形 动词原形：appear(出现) 反义词：disappear(消失) 名词形式：appearance(出现：外貌) 构词解析 前缀re-:表”再次、重新”；前缀dis-:表”不、相反”：后缀-ance构成名词。 同类词：return(返回)、rebuild(重建) 例句：The sun reappeared after the rain stopped.(北师大版八年级下册同步练习) 真题链接（北师大版八年级下册单元测试)：The lost cat (appear)at the door this morning,and we were all happy.(答案：reappeared) 9.ruth /tru:θ/n.真相：实情；事实 词汇变形 形容词形式：ue(真实的) 副词形式：uy(真实地：真正地) 构词解析 后缀h:加在形容词后，构成抽象名词，表”性质、状态”。 同类词：growth(成长)←-grow(生长)、strength（力量)←strong(强壮的) 例句：He finally told the truth about what happened that day.（北师大版八年级下册教材例句) 真题链接（北师大版八年级下册同步练习）：You should always tell the__(rue)to your parents. (答案：tuth) l0.recently/'ri:sntli/adv.最近：近来 词汇变形 形容词形式：recent(最近的) 构词解析 后缀y:加在形容词后，构成副词，表”…地”。 例句：I have read several books recently..（北师大版八年级下册教材例句) 3 8年级下册北师大版 【Unit6】 词汇变形及词缀精讲 真题链接（北师大版八年级下册单元测试)： (recent),my father bought a new computer for me. (答案：Recently) 11.degree/d'gi:m.度：度数；学位：程度 词汇变形 动词形式：degrees(第三人称单数形式，较少独立使用，常见于短语'degree of..”表”…的程度”) 构词解析 词根grad:表”等级、步”；后缀-e构成名词。 例句：Water boils at 100 degrees Celsius.(北师大版八年级下册同步练习) 真题链接（北师大版八年级下册单元测试)：The temperature will drop to five (degree)below zero tomorrow.(答案：degrees) l2.create /kri'ert/v.创造；创作；创建 词汇变形 名词形式：creation(创造；作品) 形容词形式：creative(有创造力的) 构词解析 前缀cre:表”生长、产生”；后缀-ate构成动词：-ion构成名词；ive构成形容词。 同类词：invent(发明)→invention(发明物)、active(活跃的) 例句：Artists create beautiful works to express their ideas..（北师大版八年级下册教材例句) 真题链接（北师大版八年级下册同步练习)：The (create)of new technology has changed our life a lot.(答案：creation) 综合训练 一、 根据句意及汉语提示完成单词 l.The storyteller’s(幽默)made the whole audience laugh. 2.The (of the accident will be announced tomorrow. 3.She received a()in physics from Harvard University last year. 4.The temperature dropped to 10()below zero last night 5.His parents have high hopes for his (教育) 二、用所给单词的适当形式填空 1.It's (possible)to solve the problem without his help 2.My mother has been very busy (recent). 4 8年级下册北师大版 【Unit6】 词汇变形及词缀精讲 3.The artist spent three months (create)this beautiful painting. 4.The little boy's(appear)at the door surprised everyone. 5.You should answer the questions_ (exact)to get full marks. 三、完成句子（每空一词） 1.雨后，太阳再次出现在天空中。 After the rain,the sun in the sky. 2.他说话不清楚，所以很少有人能听懂他。 He speaks _so few people can understand him. 3.这位富有的商人捐了很多钱给贫困儿童。 The businessman donated much money to poor children. 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 is a (humor)boy who loves telling jokes.Last week,he lost his favorite book and was very sad.However,it(appear)on his desk this morning,which made him excited.His teacher often says that (educate)is the key to success,so Tom studies hard every day.He wants to get (degree)in science when he grows up. (recent),he joined a reading club and made many friends.Everyone thinks Tom is (create)and always has new ideas 参考答案 I.根据句意及汉语提示完成单词 1.humor/humour 2.truth 3.degree 4.degrees 5.education I.用所给单词的适当形式填空 1.impossible 2.recently 3.creating 4.appearance 5.exactly II.完成句子 1.reappeared 2.unclearly 3.wealthy V语篇填空 1.humorous 2.reappeared 3.education 4.degree 5.Recently 6.creative 5