Unit 2 Wonders of nature-2025-2026学年七年级下册英语词汇变形及词缀精讲（沪外版）

7年级下册沪外版 【同步精讲】 ,E版词汇变形及词缀精讲 同步精讲 【Unit2】Vonders of nature 词汇变形及词缀精讲 全部单元单词 wonder/wda(r)/v.m.想知道；素；成分 relationship /rI'lerfnfp/n.关系： 琢磨：奇迹 underground /,nd'graund联系 language/'1e)gwId3/n.语言 ad./adv.m.地下的：在地下：地tourist/t5 arIst/n.游客；旅行者 imagine'med3n/v.想象；设铁 landform/'laendfo:m/n.地形： 想 against /a'genst/prep.反对；违地貌 powerful/'paaf/adj.强大的；反：靠着 channel/t∫enl/n.v.频道：渠 强有力的 through/u:/prep./adv.通过；道；输送 explorer /k'splo:ra)/n.探险穿过；自始至终 discovery/d'skavari/n.发现： 家：勘探者 perfect/p3:fkt/adj./w.完美的；发觉 appear月'pIa)/v.出现；似乎；理想的：使完美 separate/'seprat/adj.;/'separert/ 显得 sunshine/'sAnfam/n.阳光；日V.分开的；单独的；分开：分离 recognize/'rekagnaIz/V.认出；光 识别：承认 rise up /raIz Ap/phrase起义；崛 element/eliment/n.元素；要起 词汇变形及词缀精讲 1.language/'le)gwid3/n.语言 词汇变形 形容词形式：linguistic(语言的；语言学的) 构词解析 后缀-ge:加在动词或名词后构成名词，表“行为、结果或状态”。 同类词：marriage(婚姻)、passage(通道) 例句：English is an international language used in many countries, 真题链接（沪外版7下同步练习）：Chinese is our mother(language).We should learn it well.. (答案：language) 2.powerful/'pavafl/adj.强大的：强有力的 词汇变形 名词形式：power 1 7年级下册沪外版 【同步精讲】 ,E版词汇变形及词缀精讲 副词形式：powerfully 构词解析 后缀ul:加在名词后构成形容词，表“充满…的：具有…性质的”；-y构成副词。 同类词：careful(小心的)、successful(成功的) 例句：The king had a powerful army to protect his country. 真题链接（沪外版7下单元测试）：Wind is a(power)force of nature.(答案：powerful) 3.explorer /ik'splo:ra(r)/n.探险家；勘探者 词汇变形 动词形式：explore(探索；勘探) 构词解析 后缀-r:加在动词后构成名词，表“从事…的人”。 同类词：teacher(教师)、writer(作家) 例句：The explorer spent three years traveling through the desert.. 真题链接（沪外版7下阅读真题）：Columbus was a famous _(explore)who discovered America. (答案：explorer） 4.appear /a'pIa()r/v.出现；似乎；显得 词汇变形 名词形式：appearance（外貌；出现) 反义词：disappear(消失) 构词解析 前缀ap-(=ad-,表“向”)+pear(出现)：dis-表“否定”，构成反义词disappear。 例句：A rainbow appeared in the sky after the rain stopped. 真题链接（沪外版7下同步练习）：Her sudden__(appear)surprised everyone at the party..(答案： appearance) 5.recognize/'rekagnaIz/v.认出；识别；承认 词汇变形 名词形式：recognition(认出：承认) 形容词形式：recognizable(可认出的) 构词解析 前缀re-(表“再次”)+cogn(知道)+iz(动词后缀)：-ition构成名词，-able构成形容词表“可 …的”。 例句：I recognized my old friend from the photo she sent me. 真题链接（沪外版7下完形填空）：Even after many years,,she could still (recognition)her childhood home.（答案：recognize) 6.element/elimant/n.元素；要素：成分 词汇变形 形容词形式：elementary(基本的；初级的) 构词解析 2 7年级下册沪外版 【同步精讲】 ,E版词汇变形及词缀精讲 后缀-ay:加在名词后构成形容词，表“与…有关的；具有…性质的”。 同类词：imaginary（想象的)、secondary(次要的) 例句：Water is made up of two elements:hydrogen and oxygen.. 真题链接（沪外版7下科学英语阅读）： (element)school is the first stage of formal education. (答案：Elementary) 7.underground/,nd'graond adj./adv.h.地下的；在地下；地铁 构词解析 前缀under-（表“在…之下”)+ground(地面)，合成词。 同类词：underwater（水下的)、underwear(内衣) 例句：Many cities have underground systems to reduce traffic jams. 真题链接（沪外版7下听力真题）：We took the_(underground)to the city center yesterday..(答 案：underground) 8.against/A'genst//prep.反对；违反；靠着 词汇变形 反义词：for(支持：赞成) 构词解析 前缀a-(表“朝向”)+gainst(=against,对抗)。 固定搭配：play against（与…对抗)、be against(反对) 例句：Most students are against the new rule of no mobile phones at school. 真题链接（沪外版7下语法填空）：Are you_(against))or for the plan to build a new park?(答 案：against) 9.perfect/'p3fkt/ad.完美的：理想的；v.使完美 词汇变形 副词形式：perfectly 名词形式：perfection(完美) 构词解析 前缀per-(表“完全”)+fect(做)：-ly构成副词，-ion构成名词。 例句：She practiced the piano every day to perfect her skills. 真题链接（沪外版7下写作真题）：The weather was(perfect)for a picnic in the park.(答案： perfect) l0.relationship/r'lenp/n.关系；联系 词汇变形 动词形式：relate(联系：叙述) 形容词形式：related(相关的) 构词解析 前缀re-（表“再次”)+lat(携带)+ion(名词后缀)+ship(表“关系”)。 固定搭配：have a good relationship with(与…关系好) 例句：The relationship between parents and children is very important. 7年级下册沪外版 【同步精讲】E版词汇变形及词缀精讲 真题链接（沪外版7下完形填空）：She (relation)the story of her adventure to her classmates. (答案：related) 11.discovery/d'skAvari/n.发现；发觉 词汇变形 动词形式：discover(发现；发觉) 构词解析 前缀dis-(表“否定”)+cover(覆盖)：-y构成名词。 同类词：invention(发明)←-invent（发明) 例句：The discovery of electricity changed the world greatly. 真题链接（沪外版7下单元测试）：Edison made many important (discover)in his life.(答案： discoveries) l2.separate/seprat/adj.分开的：单独的；/'separeit/v.分开；分离 词汇变形 名词形式：separation(分离：分开) 构词解析 前缀se-(表“分开”)+par(准备)+ate（形容词/动词后缀)：-ion构成名词。 固定搭配：separate.from.（把…和…分开) 例句：The teacher asked us to work in separate groups. 真题链接（沪外版7下同步练习）：We should__(separate)the good apples from the bad ones.(答 案：separate) 综合训练 一、 根据句意及汉语提示完成单词 6.The_(探险家)discovered a new species in the rainforest. 7.Water is composed of hydrogen and oxygen_(元素)， 8.We took the()to avoid traffic on the way to the museum. 9.Her sudden_(出现)at the door made me jump 10.The _(between the two countries has improved recently. 二、用所给单词的适当形式填空 6.Columbus was one of the greatest_(explore)in history. 7.Wind is a(power)natural force that can generate electricity. 4 7年级下册沪外版 【同步精讲】 ,E版词汇变形及词缀精讲 8.She has a_(recognize)scar on her left hand. 9.We should(separate)recyclable waste from non-recyclable waste. 10.Edison's many_(discover)changed people's lives. 三、完成句子（每空一词） 1.这道题对小学生来说很基础。 This question is_primary school students. 2.他靠在墙上休息了一会儿。 He leaned --to rest for a while. 3.大多数学生反对周末补课。 Most students are_-extra classes on weekends. 4.彩虹雨后出现在天空中。 A rainbowthe sky after the rain. 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。 Maria is interested in_(language)learning.She dreams of becoming a_(linguistic)one day. Last month,she read a story about a famous_(explore)who traveled to the Arctic.The explorer's diary described the(appear)of polar bears and the(power)winds there. Maria was so inspired that she decided to_(explore)the local history museum.On her way,she took the_(underground)to save time.At the museum,she saw ancient tools made of different (element).A guide explained their-(history)importance,and Maria_(recognize)some symbols from her textbook 参考答案 I根据句意及汉语提示完成单词 6.explorer 7.elements 8.underground 9.appearance 10.relationship Ⅱ用所给单词的适当形式填空 6.explorers 7.powerful 8.recognizable 9.separate 10.discoveries 5 7年级下册沪外版 【同步精讲】E版词汇变形及词缀精讲 II.完成句子 1.elementary for 2.against the wall 3.against having 4.appeared in V,语篇填空 1.language 2.linguist 3.explorer 4.appearance 5.powerful 6.explore 7.underground 8.elements 9.historical 10.recognized 6