Unit 11 AcrossGenerations-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 【词汇精讲】Unit 11 Across Generations 词汇精讲 【Unit 11】Across Generations 词汇变形及词缀精讲 全部单元单词 suppose/S3'paUz/V.认为：假设： disturb/d'st3b/v.打扰：干扰；responsibility1,spDnsa'bilati/n. 猜想 妨碍 责任；职责 be supposed to /bi s3'paozd tu:/discussion/d'skAn/n.讨论：议after all/'a:ft33:/短语毕竟：终 短语应该；被期望 论 究：归根结底 out of style/aot av starl/短语过crazy/'kezi/adj.疯狂的：痴迷environment /m'vairenmant/n. 时的：不再流行的 的：荒唐的 环境 女rend/trend/n.趋势：趋向：潮in addition/ma'd/短语另外；ourselves/awa'selvz/pron.我们 流 此外 自己：我们亲自 waste/weist/n.浪费：废弃物V.education/,ed3u'keIn/n.教育：anyone/eniw/pron.任何人； 浪费：滥用adj.废弃的 培养 无论谁 a waste of/月weist av/短语浪费interest/'mtr3st/n.兴趣：爱好： 利益V.使感兴趣：引起关注 词汇变形及词缀精讲 1.suppose/sa'pauz/v.认为；假设；猜想 词汇变形 形容词形式：supposed(被期望的：假定的) 短语搭配：be supposed to(应该；被期望) 构词解析 前缀sup-(=sub-,表”在下面”)；词根pos(=put,放置)；后缀-e构成动词。 例句 You are supposed to finish your homework before dinner. 真题链接（教科版7下同步练习） We_(suppose)to meet at the school gate at 8:00 a.m.(are supposed) 2.waste/weist/n.浪费；废弃物v.浪费；滥用adj.废弃的 词汇变形 短语搭配：a waste of(浪费…) 构词解析 1 7年级下册教科版 【词汇精讲】Unit 11 Across Generations 词根wast(=empty,空的)：后缀-e构成动词/名词。 例句 It's a waste of time to play computer games all day. 真题链接（教科版7下教材例句） Don't waste water.It's important for us. 3.discussion/dr'skAn/n.讨论；议论 词汇变形 动词形式：discuss(讨论) 构词解析 前缀dis-(表”分开)：词根cuss(=shake,摇动)：后缀-ion构成名词。 同类词：decision(决定)←-decide(动词) 例句 We had a heated discussion about the environment yesterday. 真题链接（教科版7下同步练习） Let's (discussion)the problem together..（答案：discuss) 4.crazy/krerzi/adj.疯狂的；痴迷的：荒唐的 词汇变形 副词形式：crazily 名词形式：craziness 构词解析 词根craze(n.狂热)：后缀-y构成形容词（表”充满…的”）。 例句 She is crazy about pop music and collects many CDs. 真题链接（教科版7下同步练习） He runs (crazy)to catch the bus..(答案：crazily) 5.education/,ed3uken/n.教育；培养 词汇变形 动词形式：educate(教育) 形容词形式：educational(有教育意义的) 构词解析 前缀e-(=out,出)：词根duc(=lead,引导)；后缀-ation构成名词。 例句 Education is very important for children's growth. 真题链接（教科版7下教材例句） We should value our education and study hard. 6.interest/'ntr3st/n.兴趣：爱好：利益v.使感兴趣：起关注 词汇变形 形容词形式：interested(感兴趣的，修饰人)：interesting(有趣的，修饰物) 7年级下册教科版 【词汇精讲】 Unit 11 Across Generations 构词解析 前缀inter.(=between,在…之间)；词根est(=be,存在)：后缀t构成名词/动词。 例句 He has an interest in playing basketball.The story is interesting and we all like it. 真题链接（教科版7下同步练习） I'm (interest)in science.(答案：interested) 7.responsibility /rI,sponsa'bilati/n.责任；职责 词汇变形 形容词形式：responsible(有责任的) 构词解析 前缀re-(=back,回)：词根spons(promise,.承诺)：后缀-ibility构成名词（表”能力、性质”）。 短语搭配：be responsible for(对…负责) 例句 It's our responsibility to protect the environment. 真题链接（教科版7下教材例句） As students,we should be responsible for our study. 8.environment/m'vairanment//n.环境 词汇变形 形容词形式：environmental(环境的) 构词解析 前缀en-(=in,在…里)：词根viron(=circle,圆圈)：后缀-ment构成名词。 例句 We must try our best to protect the environment. 真题链接（教科版7下同步练习） (environment)protection is everyone's duty.(答案：Environmental) 9.ourselves/a3'selvz/pron.我们自己：我们亲自 词汇变形 反身代词变化：we(主格)→us(宾格)→our(形容词性物主代词)→ours(名词性物主代词)→ ourselves（反身代词) 构词解析 前缀our(我们的)：词根self(自己)：后缀-ves(复数形式，self的复数为selves)。 例句 We should learn to take care of ourselves. 真题链接（教科版7下教材例句） We enjoyed ourselves at the party last night. 10.disturb/d'st3b/v.打扰：干扰：妨碍 词汇变形 名词形式：disturbance(打扰：骚乱) 3 7年级下册教科版 【词汇精讲】 Unit 11 Across Generations 构词解析 前缀dis-（表”相反”)：词根ub(=stir,搅动)：后缀-e构成动词。 例句 Please don't disturb me while I'm studying. 真题链接（教科版7下同步练习） The noise outside caused a (disturb)to our class.(disturbance) 11.trend /trend/n.趋势：趋向；潮流 词汇变形 动词形式：trend(vi.趋向，倾向) 构词解析 词根trend(=tum,转向)：无明显后缀，直接构成名词/动词。 例句 The trend of wearing masks is popular during the winter. 真题链接（教科版7下教材例句） What's the latest trend in fashion this year? l2.anyone/'eniwan/pron.任何人：无论谁 词汇变形 复合代词构成：any(任何)+one(一个人)→anyone(任何人) 同类词：someone(某人)、everyone(每个人) 构词解析 不定代词，用于否定句或疑问句中。 例句 Is there anyone who can help me with this math problem? 真题链接（教科版7下同步练习) I didn't see _(anyone)in the classroom just now.(答案：anyone) 综合训练 一、 根据句意及汉语提示完成单词 1.It's our (债任)to keep the classroom clean and tidy. 2.The documentary about wild animals is very（(有教育意义的) 3.We had a (about how to improve our English yesterday. 4.The (around the lake has become much better than before. 5.She has a strong()in painting and wants to be an artist. 6.The (趋势）of online shopping is becoming more and more popular,. 7年级下册教科版 【词汇精讲】Unit 11 Across Generations 二、用所给单词的适当形式填空 1.You are (suppose)to arrive at the airport two hours before the flight 2.Don't (waste)your time on computer games;study hard instead. 3.Let's (discussion)the problem of pollution in our city. 4.He ran (crazy)to catch the last bus,but he still missed it. 5.The teacher encourages us to take part in(education)activities after school. 6.I'm(interest)in science fiction books,and I've read many of them. 7.As students,we should be (responsibility)for our own learning. 8.The loud music from the party next door caused a (disturb)to our study. 三、完成句子（每空一词） 1.你应该按时完成作业。 You finish your homework on time 2.整天玩游戏是浪费时间。 Playing games all day is time. 3.她痴迷于流行音乐，经常去听音乐会。 She pop music and often goes to concerts. 4.保护环境是每个人的责任。 is everyone's duty. 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。 5 7年级下册教科版 【词汇精讲】 Unit 11 Across Generations Education is very important for everyone.It helps us develop a sense of (responsible)and learn about the world.Last week,our class had a(discuss)about environmental protection. We talked about how to reduce waste and protect the(environment). During the discussion,Lucy said,"We(suppose)to save water and electricity in our daily life." Tom added,"It's a waste of resources to use plastic bags.We should take cloth bags when shopping." I was (interest)in their ideas and decided to do my part. After the discussion,I startedto collect waste paper and bottles for recycling.My parents were proud of me and said my actions were (education).I believe that small changes can make a big difference to our (environment) 参考答案 I根据句意及汉语提示完成单词 1.responsibility 2.educational 3.discussion 4.environment 5.interest 6.trend Ⅱ用所给单词的适当形式填空 1.supposed 2.waste 3.discuss 4.crazily 5.educational 6.interested 7.responsible 8.disturbance L.完成句子 1.are supposed to 2.a waste of 3.is crazy about 4.Environmental protection V.语篇填空 1.responsibility 2.discussion 3.environment 4.are supposed 5.interested 6.educa- tional 7.environment 6