Unit 4 Space Exploration-Reading Actively-2025-2026学年高中英语词义辨析及同义替换精讲选择性必修第四册（重庆大学版）

高中选择性必修第四册重庆大学版 【寒假专版】 D版词义辨析及同义替换精讲 寒假专版 【Unit4】Space Exploration-Reading Actively 词义辨析及同义替换精讲 本单元核心词汇 一、全部单元单词 launch1ont/v.m.发射：发起；顺利地：流畅地 potential /pa'ten/ad.m.潜在 推出：发射 regularity/regju'rti/n.规律的；可能的；潜力；潜能 orbit/obtn.v.轨道：绕…性；规则性：经常性 worthwhile /.w3:0'wail/adj. 运行 preparation/,prep3'ren/n.准得做的；值得的 smoothly/'smu:i/adv.平稳地；备：预备：准备工作 词义辨析及同义替换 1. launch /lo:nt∫/v.m.发射：发起；推出 词义辨析： launch:作动词时，可表示“发射（火箭、卫星等）”“发起（活动、项目）”“推出（产品）”；作 名词时指“发射”“（新产品的）上市”。 tat:含义更广，可指“开始（动作、活动）”“启动（机器）”，日常使用更频繁。 同义替换： start,initiate,introduce 例句： China successfully launched its first Mars probe in 2020 真题链接：（重庆大学版高中选择性必修第四册同步练习） Our company will a new smartphone model next month. A.launch B.start C.begin (答案：A) 2.potential /p3'tenl/adj.n.潜在的：可能的：潜力：潜能 高中选择性必修第四册重庆大学版 【寒假专版】 D版词义辨析及同义替换精讲 词义辨析： potential(ad.):强调“潜在的、尚未显现的可能性”，修饰名词时指“有潜力的”。 possible:侧重“客观上有可能的”，常用搭配“it is possible to do”。 同义替换： possible,latent,hidden 例句： The young athlete has great potential to become a champion. 真题链接：（重庆大学版高中选择性必修第四册单元测试） We should pay attention to the dangers in the experiment. A.potential B.possible C.certain (答案：A) 3.worthwhile/w3:0'wail/adj.值得做的：值得的 词义辨析： worthwhile:可作表语或定语，强调“某事值得投入时间、精力”，常见搭配“it is worthwhile to do/doing”。 worth:介词，后接名词或动名词，常用搭配“be worth sth./doing sth.”,主语通常是物。 worthy:形容词，常用搭配“be worthy of sth./to be done”,语气较正式。 同义替换： worthy,valuable 例句： It is worthwhile to spend time learning a second language. 真题链接：（重庆大学版高中选择性必修第四册课后练习） The effort we made to help the villagers was A.worthwhile B.worth C.worthy (答案：A) 4.preparation/.prep3'ren/n.准备；预备；准备工作 词义辨析： preparation:指“为某事做的准备工作”，常用复数形式或搭配“make preparations for”。 preparing:动词prepare的动名词形式，强调“准备的动作”。 同义替换： preparatory work,arrangement 例句： We need to make preparations for the upcoming exam. 2 高中选择性必修第四册重庆大学版 【寒假专版】 D版词义辨析及同义替换精讲 真题链接：（重庆大学版高中选择性必修第四册同步练习） All the for the party have been completed A.preparations B.preparing C.prepare (答案：A) 5.regularity/,reqju'larati/n.规律性：规则性；经常性 词义辨析： regularity:名词，指“行为、事件的规律性”，强调“符合规则或固定模式”。 regularity:无直接同义词，可通过形容词regular(有规律的)转换理解。 同义替换： regular pattern,consistency 例句： Eating with regularity is good for our health 真题链接：（重庆大学版高中选择性必修第四册单元测试） The of his daily exercise helps him stay fit. A.regularity B.regular C.regularly (答案：A) 6.smoothly/'smu:li/adv.平稳地；顺利地：流畅地 词义辨析： smoothly:副词，修饰动词，指“动作平稳、过程无阻碍”。 smooth:形容词，指“表面光滑的”“事情顺利的”。 同义替换： steadily,fluently 例句： The project went smoothly with everyone's cooperation 真题链接：（重庆大学版高中选择性必修第四册阅读专项） The plane landed despite the strong wind A.smoothly B.smooth C.steady (答案：A) 7.orbit/'bt/n./.轨道：绕…运行 高中选择性必修第四册重庆大学版 【寒假专版】 D版词义辨析及同义替换精讲 词义辨析： obit(v.):指“天体按轨道运行”，或“围绕某物移动”。 circle:动词，指“转圈、环绕”，可用于具体或抽象事物，如“circle the city”。 同义替换： revolve around,circle 例句： The moon orbits the Earth every 27 days. 真题链接：（重庆大学版高中选择性必修第四册科学阅读） Satellites the Earth to collect weather data. A.orbit B.circle C.run (答案：A) 综合演练 综合练习 一、单项选择 1.Our team plans to a new research project next semester to study climate change. A.launch B.start C.begin 2.The dangers of online fraud should not be ignored by internet users. A.potential B.possible C.certain 3.Itis to spend a whole day visiting the historical museum to learn about local culture. A.worthwhile B.worth C.worthy 4.All the for the upcoming sports meeting have been finished,including venue arrangement and equipment check. A.preparations B.preparing C.prepare 高中选择性必修第四册重庆大学版 【寒假专版】 D版词义辨析及同义替换精讲 5.The of his morning jogging routine helps him maintain good physical condition. A.regularity B.regular C.regularly 6.The negotiation between the two companies went and they reached an agreement finally. A.smoothly B.smooth C.steady 7.Artificial satellites. the Earth to provide communication and navigation services. A.orbit B.circle C.run 二、根据句意及首字母提示填空 1.After months of p. the team was fully ready for the international competition. 2.Thep_ ofrenewable energy sources like solar and wind power will be discussed in tomorrow s lecture 3.Itisw to invest time in building strong relationships with family and friends. 4.The success of the event depends on careful p and teamwork. 5.Maintaining r in daily life,such as fixed sleeping hours,is beneficial to mental health. 三、用所给单词的适当形式填空 1. The company announced the (launch)of its latest electric car model at the tech conference. 2.She has great (potential)to become a professional pianist with proper training. 3 (prepare)for the exam requiresnot only memorizing knowledge but also practicing problem- solving. 4.The machine operates. (smooth)when it is regularly maintained. 5.The (regular)of his study schedule allowed him to achieve excellent grades in all subjects. 四、完成句子（每空一词） J 高中选择性必修第四册重庆大学版 【寒假专版】 D版词义辨析及同义替换精讲 1.政府将于明年推出一项新的环境保护计划。 The government will a new environmental protection plan next year. 2.尽管面临诸多挑战，项目仍顺利进行并按时完成。 Despite many challenges,the project went and was completed on time 3.为即将到来的面试做准备是非常值得的。 It is to make preparations for the upcoming interview. 4.这颗卫星绕地球运行，收集大气数据并发送回地面站。 The satellite the Earth,collecting atmospheric data and sending it back to ground stations. 五、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。 Space exploration has always been a topic of great interest.In 2023,a private company decided to (1)(launch/start)a mission to explore Mars.Before the launch,scientists spent years making (2)(preparations/preparing)for the journey,including designing the spacecraft and training astronauts The mission faced many challenges,but everything went (3)(smoothly/smooth).The space- craft successfully entered Mars'orbit and began collecting data.The astronauts maintained (4)(regularity/regular)in their work and rest schedules to stay healthy in space. One astronaut noted,"The effort weput into training was(5)(worthwhile/worth).Every detail of the (6)(preparation/preparing)process helped us overcome difficulties here."The data sent back from Mars has provided (7)(potential/possible)insights into the planet's climatehistory. 参考答案 I单项选择 1.A2.A3.A4.A5.A6.A7.A IⅡ.根据句意及首字母提示填空 1.preparations 2.potential 3.worthwhile 4.preparation 5.regularity I.用所给单词的适当形式填空 1.launch 2.potential 3.Preparing 4.smoothly 5.regularity V.完成句子 1.launch 2.smoothly 3.worthwhile 4.orbits 6 高中选择性必修第四册重庆大学版 【寒假专版】D版词义辨析及同义替换精讲 V.语篇填空 1.launch 2.preparations 3.smoothly 4.regularity 5.worthwhile 6.preparation 7.poten- tial 7