Unit 5 Say It Without Words-2025-2026学年七年级下册英语词汇变形及词缀精讲（教科版）

7年级下册教科版 【同步精讲】 词汇变形及词缀精讲 同步精讲 【Unit5】Say It Without Words 词汇变形及词缀精讲 全部单元单词 glasses/gla:siz/n.眼镜：玻璃point /pomt/n.要点；得分；观impolite/,mp3'lat/adj.不礼貌 杯（复数） 点V.指：指向：表明 的：失礼的 jeans/d3 inz/n.牛仔裤 polite/p3'lat/adj.有礼貌的：客might /mart/modal v.可能；也 pink /p四k/adj..粉红色的n.粉气的 许n.力量；威力 红色 index/'ndeks/n.索引；指数；shake/∫ek/v.(shook,shaken)摇 pick up/prk Ap/短语捡起；拾起；指标 动：抖动：摇晃 接载 finger/f四ga(t)/n.手指 differently/'difrantli/adv.不同 height /hart/n.高度；身高 back and forth /baek and f:0/短地：有区别地 communicate /ka'mju:nikert/V.语来回地；反复地 luck /IAk/n.运气；幸运；机遇 交流：沟通；通信 atal/et:l/短语根本；究竟 common/'kpman/adj.常见的；peace/pi:s/n.和平；平静；安宁 普通的：共同的 victory/'vIktari/n.胜利；获胜 词汇变形及词缀精讲 1.common/'kDmn/adj.常见的：普通的：共同的 副词形式：commonly 构词解析：前缀com-:表“共同、一起”；后缀-mon:表“公共的”；y构成副词。 同类词：community(社区，n.) 例句：English is a common language used around the world. 真题链接（教科版7下同步练习）：It's (common)to see students reading in the library after school..(答案：common) 2.polite /p3'lat/adj.有礼貌的：客气的 副词形式：politely 反义词：impolite(不礼貌的) 构词解析：前缀po-(=per,表“完全”)：后缀-lite(=icit,表“允许的”)：-y构成副词；im-为否 定前缀。 例句：She always speaks politely to her teachers. 真题链接（教科版7下教材例句）：It's polite to say“thank you”when someone helps you. 1 7年级下册教科版 【同步精讲】 词汇变形及词缀精讲 3.impolite/,mp3'lat/adj.不礼貌的；失礼的 反义词：polite(有礼貌的) 构词解析：前缀im-:表“不、无”（否定前缀）：词根polite(礼貌的)。 例句：It's impolite to talk loudly in the library. 真题链接（教科版7下同步练习）：Don'tbe (polite)to your parents.Say“sory”when you make a mistake.(答案：impolite) 4.differently/'drfrantli/adv.不同地；有区别地 形容词形式：different 名词形式：difference 构词解析：前缀dif.(=dis-,表“分开”)：词根fer(表“带来”)；-ent构成形容词；-y构成副词； -ence构成名词。 例句：They solved the problem differently. 真题链接（教科版7下同步练习）：My brother and I have__(different)hobbies.He likes sports,. but I like music..(答案：different) 5.communicate /k3'mju:nikent/V.交流：沟通；通信 名词形式：communication 构词解析：前缀com-（表“共同”)：词根munic(表“公共的”)；-ate构成动词；-ion构成名词。 例句：We can communicate with each other by email. 真题链接（教科版7下教材例句）：Good communication is important in our daily life. 6.point /p3nt/n.要点：得分；观点v.指：指向；表明 名词复数：points 动词第三人称单数：points 构词解析：词根point(表“刺、点”)，可作名词或动词。 固定搭配：point out(指出)、point to(指向) 例句：He pointed to the map and showed us the way. 真题链接（教科版7下同步练习）：Please write down the key (point)of the text.(答案：points) 7.shake小ek/v.(shook,shaken)摇动；抖动：摇晃 过去式：$hook 过去分词：shaken 现在分词：shaking 构词解析：不规则动词，过去式和过去分词需特殊记忆。 例句：She shook her head and said“no” 真题链接（教科版7下同步练习)：The little girl(shake)the bottle and mixed the juice..(答案： shook) 8.height /hart/.n.高度；身高 形容词形式：high 构词解析：词根high(ad.高的)：后缀-t构成名词（表“性质、状态”）。 7年级下册教科版 【同步精讲】 词汇变形及词缀精讲 例句：What's your height??I'ml.65 meters tall. 真题链接（教科版7下同步练习）：The (high)of the mountain is about2,000 neters.(答案： height) 9.luck /IAk/n.运气：幸运；机遇 形容词形式：lucky(幸运的) 副词形式：luckily(幸运地) 反义词：unlucky(不幸的) 构词解析：后缀-y构成形容词；-iy构成副词；un-为否定前缀。 例句：Good luck to you in the exam! 真题链接（教科版7下同步练习）：He is a (luck)boy.He found his lost wallet.(答案：lucky) l0.victory/'viktari/n.胜利；获胜 动词形式：win(赢得) 构词解析：词根vict(表“征服”)：后缀-oy构成名词（表“行为的结果”）。 例句：Our team won the victory in the basketball game. 真题链接（教科版7下教材例句）：They celebrated their victory with songs and dances. ll.index/'ndeks/n.索引：指数；指标 名词复数：indexes/indices 构词解析：前缀in-(表“进入”)：词根dex(=dict,表“说”)，原指“指点的东西”。 例句：You can find the word in the index at the back of the book. 真题链接（教科版7下同步练习）：Check the_(index)to find the page quickly..（答案：index) l2.might/mait/modal v.可能：也许n.力量；威力 过去式：无（情态动词无过去式变化，作名词时复数为mights) 构词解析：情态动词mgt为may的过去式，表推测：作名词时意为“力量”。 例句：It might rain tomorrow,so take an umbrella 真题链接（教科版7下同步练习）：She(might)come to the party,butI'm not sure.(答案： might) 综合训练 一、根据句意及汉语提示完成单词 6.It's important to learn how to (交流)with others effectively. 7.The()of the new building is over 100 meters. 8.We should always be__(礼貌的)to our elders.. 9.After the game,the whole team celebrated their (胜利)happily. 3 7年级下册教科版 【同步精讲】 词汇变形及词缀精讲 10.You can find the page number quickly by checking the (索引)at the back of the book. 二、用所给单词的适当形式填空 6.He speaks English (different)from his twin brother. 7.The teacher (point)out the mistake in my composition just now. 8. (lucky),he missed the last bus and had to walk home alone. 9.The little girl (shake)the box to see what was inside. 10.Good (communicate)is the key to a happy relationship. 三、完成句子（每空一词） 4.他们以不同的方式解决了这个问题。 They solved the problem 5.在图书馆大声说话是不礼貌的。 It's to talk loudly in the library. 6.我不确定他明天是否会来，但他可能参加会议。 He come to the meeting tomorrow,but I'm not sure. 7.她总是礼貌地和陌生人说话。 She always speaks to strangers 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。 Reading is a (common)hobby among students.It helps us learn about the world and (communicate)with others.However,everyone reads(different).Some like novels,while others prefer science books.Last week,our class had a reading activity.The teacher(point) out that reading (polite)in the library means not making noise.A boy(shake)his head when he heard this,because he once forgot to keep quiet.(lucky),no one got angry with him. Later,we discussed the(high)of reading.Everyone agreed that it brings us knowledge and joy. 参考答案 7年级下册教科版 【同步精讲】 词汇变形及词缀精讲 I.根据句意及汉语提示完成单词 6.communicate 7.height 8.polite 9.victory 10.index Ⅱ.用所给单词的适当形式填空 6.differently 7.pointed 8.Unluckily 9.shook 10.communication II.完成句子 4.differently 5.impolite 6.might 7.politely V.语篇填空 1.common 2.communicate 3.differently 4.pointed 5.politely 6.shook ：7.Un- luckily 8.height 5