Unit 1 Life Choices-2026-2027学年高中英语词汇精讲精练必修第一册（北师大版）

Unit 1 Life Choices 词汇精讲精练 核心词汇概览： lifestyle chat surf surf the Internet voluntary engine search engine definitely teen laptop digital native range various hardware necessity convenient quality from time to time living room addict according to in person media social media actually drag tend to do sth goal aim target update meanwhile distance volunteer revise saying ahead;get ahead等 词汇精讲 序号 单词/短语 词汇讲解 voluntary 释义：ad山j.志愿的：自愿的 /'vplantri/ 词汇变形：voluntarily(adv.)自愿地；volunteer.志愿者/v.自愿 做) 搭配：voluntary work志愿工作；voluntary organization志愿组 织；on a voluntary basis自愿地 辨析：voluntary强调“自愿的，非强迫的”；optional强调“可选 的，非必须的”（如optional course选修课） 例句：Many students take part in voluntary activities during holidays. 许多学生在假期参加志愿活动。 definitely 释义：adv.确切地：肯定地 /'defmetli/ 词汇变形：definite(adj.)明确的；definition(n.)定义 搭配：definitely not绝对不；definitely+adj.肯定… 辨析：definitely语气强于certainly,表示毫无疑问；absolutely语 气更强，常用于完全赞同。 例句：The new policy will definitely improve the quality of education. 新政策肯定会提高教育质量。 3 digital 释义：adj.数字的：数码的 /'did3itl/ 词汇变形：digitally(adv.)数字化地；digitalize(v.)使数字化 搭配：digitalage数字时代：digital camera数码相机：digital footprint数字足迹 辨析：digital与analogue(模拟的)相对；electronic(电子的)范 围更广，如electronic deviceo 例句：In the digital age,almost everyone u.ses a smartphone. 在数字时代，几乎每个人都使用智能手机。 range 释义：n.一系列；范围；v.(在一定范围内)变化 /reind3/ 词汇变形：ranging(adj)范围广泛的 搭配：a wide range of大范围的：range from...to..范围从… 到…；range over涉及 辨析：scope指活动或理解的范围；range常指具体数值或种类的变 化范围。 例句：The prices range from10to$100. 价格从10美元到100美元不等。 various 释义：ad.各种各样的：多种的 /'vearias/ 词汇变形：variety()多样性；vary(v,)变化；varied(adj)多变的 搭配：various kinds/types of各种类型的；for various reasons由于 各种原因 辨析：various强调种类多：different强调不同；diverse通常指差异 很大，更具文学性。 例句：We have various ways to solve the problem. 我们有多种方法解决这个问题。 necessity 释义：n.必需品；必要性 /na'sesati/ 词汇变形：necessary(adj)必要的：necessary(adj山,)不必要的； necessarily(adv.)必然地 搭配：a daily necessity日常必需品；of necessity必然地； necessity for.…的必要性 辨析：necessity指不可或缺的事物：requirement指要求或条件： essential强调本质上的必要。 例句：Water is a basic necessity for human survival.. 水是人类生存的基本必需品。 convenient 释义：adj.方便的，便利的 kan'vi:niant/ 词汇变形：conveniently(adv.)方便地：convenience(.)便利； inconvenient(adj,)不方便的 搭配：It is convenient for sb.to do sth.对某人来说做某事方便； convenient store便利店 注意：主语不能是人，常用t作形式主语。 例句：It's convenient for me to take the subway to work. 我乘地铁上班很方便。 8 quality 释义：n.质量，品质：adj.优质的 /'kwplati/ 词汇变形：qualitative(adj)质量的，定性的；quantity)数量 搭配：high/low quality高/低质量；quality of life生活质量；inm quality在质量方面 辨析：quality指优良程度；feature指特征；characteristic指典型特 点。 例句：The quality of this product is very good. 这个产品的质量很好。 addict 释义：n.对…着迷的人；v.使沉溺，使上瘾 /'aedikt/ 词汇变形：addicted(adj.)上瘾的；addiction(n)上瘾；addictive (adj)使人上瘾的 搭配：become addicted to对…上瘾；video game addict游戏迷； drug addict吸毒者 例句：Many teenagers are addicted to social media 许多青少年对社交媒体上瘾。 10 media 释义：n新闻媒体，大众传播媒介（总称） /'mi:dia/ 词汇变形：medium(n,)媒介（单数）；multimedia(n.)多媒体 搭配：mass media大众传播媒介；social media社交媒体；media coverage媒体报道 注意：media是复数形式，常与复数动词连用，但作为总称时也可视 为单数。 例句：The media plays an important role in society. 媒体在社会中扮演着重要角色。 11 actually 释义：adv.实际上，事实上 /'aekt fuali/ 词汇变形：actual(adj)实际的；actuality(n)现实 搭配：actual situation实际情况；in actual fact事实上 辨析：actually常用于转折或纠正；in fact语气更正式：as a matter of fact也常用于补充说明。 例句：Actually,I didn't mean to hurt your feelings. 实际上，我并不是故意要伤害你的感情。 12 tend 释义：V.易于；倾向；照顾 /tend/ 词汇变形：tendency(n)趋势，倾向：tendentious(adj)有倾向性的 搭配：tend to do sth.往往做某事；tend towards趋向于；tend to sb/sth.照顾某人/某物 辨析：incline to也表倾向，但较正式；be likely to强调可能性而非 倾向性。 例句：People tend to spend more time on their phones nowadays. 如今人们往往花更多时间在手机上。 二、专项训练 (一)单句填空（每空一词，共12题） 1.Itis (definite)necessary to keep a balanced diet for good health. 2.With the development of (digit)technology,our life becomes more convenient. 3.The prices of these skirts (range)from $20 to $50. 4.There are (vary)kinds of volunteer work you can choose from 5.A good quality education is a basic (necessary)for every child. 6.Please call me at your (convenient)time 7.The (addict)of online games often find it hard to focus on their studies. 8.Social (medium)have changed the way we communicate with others. 9. (actual),the problem is more serious than we thought. 10.Teenagers (tend)to follow the latest fashion blindly 11.She did all the work on a (volunteer)basis without any pay. 12.The (quality)of the air in this city has improved significantly (二)单句表达（根据汉语提示完成句子，每空词数不限，共9题） 1.我们肯定会在数字时代面临许多挑战。 We face many challenges in the age. 2各种志愿服务涵盖了从帮助老人到保护环境的一系列活动。 kinds of voluntary services helping the elderly protecting the environment. 3对青少年来说，平衡学习和娱乐是必要的。 It teenagers balance study and entertainment. 4.这家超市对我们来说很方便，因为它24小时营业。 This supermarket for us because it is open 24 hours. 5产品的质量对消费者来说是最重要的。 The the product is the most important consumers. 6许多孩子实际上对社交媒体上瘾，这令家长担忧。 Many children are social media which worries parents 7.大众传媒在传播信息中起着重要作用。 plays an important role in spreading information. 8.事实上，我们倾向于高估自己的能力。 we our own abilities. 9他自愿参加了社区的环保志愿活动。 He to take part in the environmental activity in the community. (三)短文填空 In today's digital world,teenagers spend a lot of time online.They tend 1 (use) various social media platforms to chat with friends.2 (actual),this has become a daily necessity for many.However,3 (excessive)use of digital devices can lead to problems.For example,some students become 4 (addict)to online games, which affects their study quality.To solve this problem,it is 5 (definite) necessary for parents to set rules.Many schools also offer 6 (volunteer) programs to guide students toward healthy online habits.A wide 7 of activities, such as sports and reading,can help teenagers have a balanced lifestyle.The 8 (convenient)of modern technology should not become a trap.Take Tom as an example.He used to spend hours surfing the Internet,but now he 9 (range)his interests from photography to hiking.He believes that 10 (actual)it is not hard to break the addiction if you find something meaningful to do.The mass 11 also play a role in promoting positive online content.It is a 12 (necessary)for every teenager to learn to use digital tools wisely. 三、参考答案 (一)单句填空 1.definitely;2.digital;3.range;4.various;5.necessity;6.convenient;7.addicts; 8.media;9.Actually;10.tend;11.voluntary;12.quality (二)单句表达 1.will definitely;digital;2.Various;range from;to;3.is a necessity for,to;4.is very convenient;5.quality of,for;6.actually addicted to;media;7.Mass media;8.Actually; tend to overestimate;9.volunteered;voluntary (三)短文填空 1.to use;2.Actually;3.excessive;4.addicted;5.definitely;6.voluntary;7range; 8.convenience;9ranges;10.actually;11.media;12.necessity