I. U 開頭的英語單字一詞類分類總結1. 名詞 (Noun)2. 動詞 (Verb)3. 形容詞 (Adjective)4. 副詞 (Adverb)II. 以字母 U 開頭的英語慣用語III. 以 U 開頭的英文單字練習1. 填空練習2. 詞彙配對練習3. 回答
I. U 開頭的英語單字一詞類分類總結
以字母 U 開頭的英文單字雖然不如其他常見字母如 A、B 或 C 那樣眾多，但仍包含許多在日常生活、學術和專業環境中經常使用的重要詞彙。讓 PREP 按照詞性分類來探索這些 U 開頭的英文單字，每個類別都附有詳細解釋和例句，幫助您更好地理解和記憶。
1. 名詞 (Noun)
以下是常見的 U 開頭的英文名詞，這些詞彙在日常交流和書面表達中都有廣泛應用。
U 開頭的英文名詞
U 開頭的英文單字
音標
中文意思
例句
umbrella
/ʌmˈbrelə/
雨傘
She always carries an umbrella during the rainy season in Taiwan. (她在台灣雨季期間總是隨身攜帶雨傘。)
uncle
/ˈʌŋkl/
叔叔、舅舅
My uncle from Taipei visits us every Chinese New Year with gifts. (我來自台北的叔叔每年農曆新年都帶著禮物來探望我們。)
university
/ˌjuːnɪˈvɜːrsəti/
大學
National Taiwan University is one of the most prestigious universities in Asia. (國立台灣大學是亞洲最負盛名的大學之一。)
unit
/ˈjuːnɪt/
單位、單元
Our science teacher explained the unit of measurement for calculating volume. (我們的科學老師解釋了計算體積的測量單位。)
uniform
/ˈjuːnɪfɔːrm/
制服
Most high school students in Taiwan wear uniforms throughout the academic year. (台灣的大多數高中生在整個學年都穿制服。)
union
/ˈjuːnjən/
聯盟、工會
The labor union negotiated better working conditions for all factory employees. (工會為所有工廠員工爭取了更好的工作條件。)
utensil
/juːˈtensl/
用具、器皿
Traditional Taiwanese cooking requires specific utensils not found in Western kitchens. (傳統台灣烹飪需要西式廚房中找不到的特定用具。)
ukulele
/ˌjuːkəˈleɪli/
烏克麗麗
Many young people in Taiwan have started learning to play the ukulele. (台灣許多年輕人已開始學習彈奏烏克麗麗。)
ultimatum
/ˌʌltɪˈmeɪtəm/
最後通牒
The manager gave an ultimatum to improve performance or face possible termination. (經理發出最後通牒，要求提高績效，否則可能面臨解雇。)
umbrella
/ʌmˈbrelə/
傘、保護傘
The parent company serves as an umbrella for several smaller business operations. (母公司作為幾個較小業務運營的保護傘。)
undertaking
/ˌʌndərˈteɪkɪŋ/
任務、事業
Building a technology startup is a challenging undertaking requiring dedication and vision. (創建科技新創企業是一項需要奉獻和遠見的挑戰性任務。)
universe
/ˈjuːnɪvɜːrs/
宇宙
Scientists continue to discover new galaxies throughout our vast universe each year. (科學家每年都在我們廣闊的宇宙中發現新的星系。)
urgency
/ˈɜːrdʒənsi/
緊急、急迫性
The doctor emphasized the urgency of starting treatment for the rare condition. (醫生強調了開始治療這種罕見病症的緊急性。)
usage
/ˈjuːsɪdʒ/
使用、用法
Proper grammar usage is important when writing formal business documents. (在撰寫正式商業文件時，正確的語法用法很重要。)
utopia
/juːˈtoʊpiə/
烏托邦
Many philosophers have written about their vision of an ideal utopia. (許多哲學家都寫過他們對理想烏托邦的願景。)
utility
/juːˈtɪləti/
公用事業、效用
The monthly utility bills include electricity, water, and internet services. (每月的公用事業帳單包括電費、水費和網路服務。)
uranium
/jʊˈreɪniəm/
鈾
Uranium is used as fuel in nuclear power plants around the world. (鈾被用作世界各地核電廠的燃料。)
ubiquity
/juːˈbɪkwəti/
普遍存在
The ubiquity of smartphones has changed how people communicate and shop. (智能手機的普遍存在改變了人們溝通和購物的方式。)
UFO
/ˌjuː ef ˈoʊ/
不明飛行物
The documentary investigates reported UFO sightings in rural mountain regions. (這部紀錄片調查了在鄉村山區的不明飛行物目擊報告。)
ulcer
/ˈʌlsər/
潰瘍
Chronic stress can contribute to the development of stomach ulcers. (長期壓力可能導致胃潰瘍的發展。)
ulterior
/ʌlˈtɪriər/
隱秘的動機
We questioned whether he had an ulterior motive for offering help. (我們質疑他提供幫助是否有隱秘的動機。)
umbilical cord
/ʌmˈbɪlɪkl kɔːrd/
臍帶
The umbilical cord provides essential nutrients from mother to baby during pregnancy. (臍帶在懷孕期間提供從母親到嬰兒的必要營養。)
umbrella organization
/ʌmˈbrelə ˌɔːrɡənaɪˈzeɪʃn/
傘式組織
The foundation acts as an umbrella organization for several environmental groups. (該基金會作為幾個環保組織的傘式組織。)
umpire
/ˈʌmpaɪər/
裁判
The umpire made a controversial call during the championship baseball game. (裁判在冠軍棒球賽中做出了一個有爭議的判決。)
unanimity
/ˌjuːnəˈnɪməti/
一致同意
The committee reached unanimity on the proposal after hours of discussion. (經過數小時討論後，委員會對提案達成了一致同意。)
uncertainty
/ʌnˈsɜːrtnti/
不確定性
Economic uncertainty has made many investors cautious about new ventures. (經濟不確定性使許多投資者對新企業持謹慎態度。)
undergraduate
/ˌʌndərˈɡrædʒuət/
大學生
The undergraduate spent four years studying environmental science and policy. (這位大學生花了四年時間學習環境科學和政策。)
understatement
/ˈʌndərsteɪtmənt/
保守陳述
Saying the concert was "quite good" was an understatement—it was spectacular. (說演唱會「還不錯」是一種保守陳述—它其實非常精彩。)
undertone
/ˈʌndərtoʊn/
弦外之音
She spoke with an undertone of disapproval about the new company policy. (她談到新公司政策時帶有不贊同的弦外之音。)
underwear
/ˈʌndərwer/
內衣
The clothing store has a section dedicated to underwear and sleepwear. (這家服裝店有專門的內衣和睡衣區。)
underworld
/ˈʌndərwɜːrld/
黑社會
The detective novel explores the dangerous underworld of organized crime. (這本偵探小說探索了有組織犯罪的危險黑社會。)
underachiever
/ˌʌndərəˈtʃiːvər/
成績不佳者
The teacher worked closely with underachievers to help improve their grades. (老師與成績不佳者密切合作，幫助他們提高成績。)
undercurrent
/ˈʌndərkʌrənt/
暗流
There was an undercurrent of tension throughout the business negotiations. (整個商業談判中都有緊張的暗流。)
underprivileged
/ˌʌndərˈprɪvəlɪdʒd/
弱勢群體
The charity provides educational resources for underprivileged communities. (該慈善機構為弱勢社區提供教育資源。)
undoing
/ʌnˈduːɪŋ/
毀滅、失敗的原因
His refusal to compromise was ultimately his undoing in politics. (他拒絕妥協最終成為他在政治上失敗的原因。)
unicorn
/ˈjuːnɪkɔːrn/
獨角獸
In startup terminology, a unicorn is a privately held company valued over $1 billion. (在創業術語中，獨角獸是估值超過10億美元的私人持有公司。)
uniform code
/ˈjuːnɪfɔːrm koʊd/
統一代碼
The organization implemented a uniform code of conduct for all members. (該組織為所有成員實施了統一的行為準則。)
uniqueness
/juːˈniːknəs/
獨特性
The uniqueness of each handcrafted piece makes the collection valuable. (每件手工製品的獨特性使該收藏品很有價值。)
urbanization
/ˌɜːrbənaɪˈzeɪʃn/
城市化
Rapid urbanization has transformed the landscape of many Asian countries. (快速城市化已經改變了許多亞洲國家的景觀。)
2. 動詞 (Verb)
以 U 開頭的動詞雖然不多，但在日常對話和寫作中有著重要應用。以下是一些常見的 U 開頭的英文動詞及其用法。
U 開頭的英文動詞
U 開頭的英文單字
音標
中文意思
例句
understand
/ˌʌndərˈstænd/
理解、明白
Students must understand basic principles before moving to advanced concepts. (學生在進入高級概念前必須理解基本原理。)
use
/juːz/
使用
Many Taiwanese companies use cloud computing to store their important data. (許多台灣公司使用雲計算來存儲重要數據。)
unite
/juːˈnaɪt/
聯合、團結
The crisis helped unite the community in support of affected families. (這場危機幫助社區團結起來支持受影響的家庭。)
upload
/ˈʌploʊd/
上傳
Please upload your assignment to the online learning platform before Friday. (請在週五之前將作業上傳到線上學習平台。)
undo
/ʌnˈduː/
撤銷、解開
You can undo your last action by pressing Ctrl+Z on your keyboard. (您可以通過按鍵盤上的Ctrl+Z來撤銷最後一個動作。)
update
/ˌʌpˈdeɪt/
更新
The IT department will update all computer systems over the weekend. (IT部門將在週末更新所有電腦系統。)
upgrade
/ˌʌpˈɡreɪd/
升級
Many users upgrade their smartphones every two or three years. (許多用戶每兩三年升級一次智能手機。)
uphold
/ʌpˈhoʊld/
維護、支持
The court decided to uphold the original ruling in the controversial case. (法院決定在這個有爭議的案件中維護原判決。)
upset
/ʌpˈset/
使心煩、打翻
The unexpected news might upset our carefully planned schedule. (這個意外消息可能打亂我們精心安排的日程。)
urge
/ɜːrdʒ/
敦促、催促
Health officials urge everyone to get vaccinated before the flu season. (衛生官員敦促所有人在流感季節前接種疫苗。)
utilize
/ˈjuːtəlaɪz/
利用
Modern farming techniques utilize technology to increase crop yields. (現代農業技術利用科技來增加作物產量。)
usher
/ˈʌʃər/
引導、迎接
The staff will usher guests to their assigned seats at the ceremony. (工作人員將在儀式上引導客人到指定座位。)
usurp
/juːˈzɜːrp/
篡奪
The general attempted to usurp power from the elected government. (將軍試圖從民選政府手中篡奪權力。)
unbalance
/ʌnˈbæləns/
使失去平衡
Too much development could unbalance the fragile ecosystem of the island. (過度開發可能使島嶼脆弱的生態系統失去平衡。)
unbend
/ʌnˈbend/
變直、放鬆
After the formal meeting, the CEO seemed to unbend and chat casually. (正式會議結束後，CEO似乎放鬆下來，隨意聊天。)
unblock
/ʌnˈblɒk/
解除阻塞
The plumber will unblock the drain that has been causing problems. (水管工將疏通一直造成問題的排水管。)
uncover
/ʌnˈkʌvər/
揭露、發現
The journalist worked for months to uncover corruption in the department. (記者花了幾個月的時間揭露部門內的腐敗。)
undergo
/ˌʌndərˈɡoʊ/
經歷、承受
The patient will undergo surgery to repair the damaged knee ligament. (患者將接受手術修復受損的膝關節韌帶。)
underline
/ˌʌndərˈlaɪn/
強調、下劃線
The professor asked students to underline key concepts in the reading. (教授要求學生在閱讀材料中給關鍵概念劃線。)
undermine
/ˌʌndərˈmaɪn/
暗中破壞
Constant criticism can undermine a child's confidence and self-esteem. (持續的批評可能暗中破壞孩子的信心和自尊。)
undertake
/ˌʌndərˈteɪk/
承擔、從事
The construction company will undertake the renovation of the historic building. (這家建築公司將承擔這座歷史建築的翻新工作。)
undervalue
/ˌʌndərˈvæljuː/
低估
Many people undervalue the importance of regular exercise for mental health. (許多人低估了定期鍛煉對心理健康的重要性。)
unearth
/ʌnˈɜːrθ/
發掘、揭露
Archaeologists unearthed ancient artifacts dating back thousands of years. (考古學家發掘出有數千年歷史的古代文物。)
unfold
/ʌnˈfoʊld/
展開、逐漸明朗
The dramatic story began to unfold as more witnesses came forward. (隨著更多證人站出來，這個戲劇性的故事開始逐漸明朗。)
unify
/ˈjuːnɪfaɪ/
統一、使成一體
The leader worked to unify different factions within the organization. (領導人努力統一組織內的不同派系。)
unlock
/ʌnˈlɒk/
開鎖、解開
This special software can unlock hidden features on your device. (這款特殊軟件可以解鎖您設備上的隱藏功能。)
unpack
/ʌnˈpæk/
打開包裝、詳細分析
Let's unpack the implications of this new policy for our department. (讓我們詳細分析這項新政策對我們部門的影響。)
unravel
/ʌnˈrævl/
解開、揭示
The detective worked tirelessly to unravel the mystery behind the disappearance. (偵探不知疲倦地工作，揭示失蹤事件背後的謎團。)
unsettle
/ʌnˈsetl/
使不安、擾亂
The strange noise from the attic unsettled everyone in the house. (閣樓傳來的奇怪噪音使屋內的每個人都感到不安。)
upbraid
/ʌpˈbreɪd/
責備、訓斥
The manager upbraided the employee for repeatedly arriving late to work. (經理因員工多次遲到而訓斥他。)
upend
/ʌpˈend/
顛覆、打翻
The new technology could upend traditional ways of doing business. (新技術可能顛覆傳統的商業運作方式。)
upheave
/ʌpˈhiːv/
劇變、掀起
Political upheaval continues to upheave the nation's economic stability. (政治動盪繼續掀起該國經濟穩定的波瀾。)
uplift
/ˈʌplɪft/
提升、振奮
The motivational speech helped uplift the team's spirits after the loss. (這場激勵演講幫助振奮了球隊在失敗後的士氣。)
uproot
/ʌpˈruːt/
連根拔起、使離開家園
The storm was strong enough to uproot several large trees in the park. (風暴強大到足以連根拔起公園裡的幾棵大樹。)
upstage
/ˌʌpˈsteɪdʒ/
搶風頭、喧賓奪主
The new actor tried not to upstage the lead performer during the scene. (新演員在場景中盡量不搶主演的風頭。)
upsell
/ˈʌpsel/
推銷更貴商品
The salesperson will try to upsell you on premium features and warranties. (銷售人員會嘗試向您推銷高級功能和保修服務。)
upstage
/ˌʌpˈsteɪdʒ/
搶風頭
The supporting actor continued to upstage the leads with his charismatic performance. (這位配角憑藉他富有魅力的表演不斷搶走主角的風頭。)
urbanize
/ˈɜːrbənaɪz/
使城市化
The government plans to urbanize rural areas by building new infrastructure. (政府計劃通過建設新基礎設施使農村地區城市化。)
3. 形容詞 (Adjective)
以下是一些常見的 U 開頭的英文形容詞，這些詞彙有助於使您的語言表達更加豐富多彩。U 開頭的形容詞在英語中多與「un-」前綴相關，表示否定或相反的意義，這類詞彙在日常交流和寫作中非常實用。
U 開頭的英文形容詞
U 開頭的英文單字
音標
中文意思
例句
ugly
/ˈʌɡli/
醜陋的
The ugly industrial area was transformed into a beautiful waterfront park. (這個醜陋的工業區被改造成了一個美麗的濱水公園。)
ultimate
/ˈʌltɪmət/
最終的、極限的
The ultimate goal of our research is to develop a cure for the disease. (我們研究的最終目標是開發一種治療這種疾病的方法。)
unable
/ʌnˈeɪbl/
不能的、無法的
He was unable to attend the conference due to an unexpected illness. (由於突發疾病，他無法參加會議。)
unanimous
/juːˈnænɪməs/
全體一致的
The jury reached a unanimous decision after deliberating for three hours. (陪審團經過三小時的審議後達成了全體一致的決定。)
unaware
/ˌʌnəˈwer/
不知道的
Many people are unaware of the long-term environmental impact of plastic waste. (許多人不知道塑料廢物的長期環境影響。)
unbelievable
/ˌʌnbɪˈliːvəbl/
難以置信的
The athlete's performance was simply unbelievable, breaking three records. (這名運動員的表現簡直難以置信，打破了三項記錄。)
uncertain
/ʌnˈsɜːrtn/
不確定的
The economic outlook remains uncertain due to global market conditions. (由於全球市場條件，經濟前景仍然不確定。)
uncomfortable
/ʌnˈkʌmftəbl/
不舒服的
The old chair was so uncomfortable that no one wanted to sit in it. (那把舊椅子太不舒服了，沒人想坐在上面。)
unconditional
/ˌʌnkənˈdɪʃənl/
無條件的
Parents often provide unconditional love and support for their children. (父母常常為孩子提供無條件的愛和支持。)
unconscious
/ʌnˈkɒnʃəs/
無意識的、失去知覺的
The patient remained unconscious for three days following the accident. (這名患者在事故後昏迷了三天。)
undeniable
/ˌʌndɪˈnaɪəbl/
不可否認的
There is undeniable evidence linking smoking to various health problems. (有不可否認的證據將吸煙與各種健康問題聯繫起來。)
underground
/ˈʌndərɡraʊnd/
地下的
The city's underground transportation system is efficient and clean. (這座城市的地下交通系統既高效又乾淨。)
underlying
/ˌʌndərˈlaɪɪŋ/
潛在的、根本的
The therapist helped identify the underlying causes of anxiety. (治療師幫助確定焦慮的根本原因。)
underprivileged
/ˌʌndərˈprɪvəlɪdʒd/
弱勢的、貧困的
The charity provides educational resources to underprivileged children. (該慈善機構為弱勢兒童提供教育資源。)
undersized
/ˌʌndərˈsaɪzd/
過小的
The undersized apartment felt cramped with all their furniture. (這間過小的公寓因為所有家具而顯得擁擠。)
understanding
/ˌʌndərˈstændɪŋ/
理解的、體諒的
My supervisor is very understanding when employees have family emergencies. (我的主管在員工有家庭緊急情況時非常體諒。)
underwater
/ˈʌndərwɔːtər/
水下的
Taiwan is known for its beautiful underwater coral reef ecosystems. (台灣以其美麗的水下珊瑚礁生態系統而聞名。)
unethical
/ʌnˈeθɪkl/
不道德的
The company was criticized for its unethical business practices. (該公司因其不道德的商業行為而受到批評。)
unexpected
/ˌʌnɪkˈspektɪd/
意外的
The unexpected snowfall caused traffic problems throughout the city. (意外的降雪在整個城市造成交通問題。)
unfair
/ʌnˈfer/
不公平的
Students complained that the grading system was unfair and inconsistent. (學生抱怨評分系統不公平且不一致。)
unforgettable
/ˌʌnfərˈɡetəbl/
難忘的
Our trip to Taroko Gorge was an unforgettable experience for the family. (我們去太魯閣峽谷的旅行對家人來說是一次難忘的經歷。)
unhealthy
/ʌnˈhelθi/
不健康的
Excessive consumption of sugary drinks is unhealthy for children and adults. (過度飲用含糖飲料對兒童和成人都不健康。)
unique
/juːˈniːk/
獨特的
Each handcrafted piece of pottery has a unique pattern and color. (每一件手工製作的陶器都有獨特的圖案和顏色。)
united
/juːˈnaɪtɪd/
團結的、聯合的
The united team worked together to overcome the challenge. (團結的團隊一起努力克服挑戰。)
universal
/ˌjuːnɪˈvɜːrsl/
普遍的、通用的
Access to clean water should be a universal right for people across the world. (獲得清潔水源應該是全世界人民的普遍權利。)
unnecessary
/ʌnˈnesəseri/
不必要的
The committee decided to cut unnecessary expenses from the annual budget. (委員會決定從年度預算中削減不必要的開支。)
unpleasant
/ʌnˈpleznt/
不愉快的
The unpleasant smell from the factory affected the surrounding neighborhood. (工廠散發的不愉快氣味影響了周圍的社區。)
unpredictable
/ˌʌnprɪˈdɪktəbl/
不可預測的
Taiwan's weather can be unpredictable during the typhoon season. (台灣的天氣在颱風季節可能是不可預測的。)
unqualified
/ʌnˈkwɒlɪfaɪd/
不合格的
The company cannot hire unqualified individuals for positions requiring certification. (公司不能為需要認證的職位聘用不合格的人員。)
unreasonable
/ʌnˈriːznəbl/
不合理的
The landlord's unreasonable demands made the tenants consider moving elsewhere. (房東不合理的要求使租戶考慮搬到別處。)
unsafe
/ʌnˈseɪf/
不安全的
The building was declared unsafe following the earthquake inspection. (這棟建築在地震檢查後被宣布為不安全。)
unsatisfactory
/ˌʌnsætɪsˈfæktəri/
不令人滿意的
The team's performance was unsatisfactory in the first half of the game. (球隊在比賽前半段的表現不令人滿意。)
unseen
/ʌnˈsiːn/
看不見的
There are many unseen dangers when hiking in remote mountain areas. (在偏遠山區徒步旅行時，存在許多看不見的危險。)
unsteady
/ʌnˈstedi/
不穩定的
The patient's unsteady gait indicated possible neurological problems. (患者不穩定的步態表明可能存在神經系統問題。)
untidy
/ʌnˈtaɪdi/
凌亂的
His untidy desk was covered with stacks of papers and empty coffee cups. (他凌亂的桌子上堆滿了紙張和空咖啡杯。)
unusual
/ʌnˈjuːʒuəl/
不尋常的
The scientist observed unusual patterns in the experimental data. (科學家在實驗數據中觀察到不尋常的模式。)
unwanted
/ʌnˈwɒntɪd/
不需要的
Many animal shelters care for unwanted pets abandoned by their owners. (許多動物收容所照顧被主人遺棄的不需要的寵物。)
unwell
/ʌnˈwel/
不舒服的
She stayed home from work because she was feeling unwell. (她因為感到不舒服而沒去上班。)
unwilling
/ʌnˈwɪlɪŋ/
不願意的
The manager was unwilling to approve the additional budget request. (經理不願意批准額外的預算申請。)
urban
/ˈɜːrbən/
城市的
Urban development has transformed the previously rural landscape. (城市發展已經改變了以前的鄉村景觀。)
4. 副詞 (Adverb)
以 U 開頭的副詞雖然較少，但在精確表達語氣、方式或程度時很有價值。以下是一些常見的 U 開頭的英文副詞及其用法。
U 開頭的英文副詞
U 開頭的英文單字
音標
中文意思
例句
ultimately
/ˈʌltɪmətli/
最終、終究
Ultimately, the success of the project depends on team collaboration. (最終，項目的成功取決於團隊合作。)
unanimously
/juːˈnænɪməsli/
全體一致地
The proposal was unanimously approved by all board members present. (提案獲得了所有出席董事會成員的一致通過。)
unbelievably
/ˌʌnbɪˈliːvəbli/
難以置信地
The new smartphone is unbelievably thin and lightweight compared to previous models. (與之前的型號相比，新智能手機薄得難以置信且重量輕。)
unconsciously
/ʌnˈkɒnʃəsli/
無意識地
People often unconsciously mimic the body language of those they admire. (人們常常無意識地模仿他們欽佩的人的肢體語言。)
unconditionally
/ˌʌnkənˈdɪʃənəli/
無條件地
She loves her children unconditionally, regardless of their choices. (無論孩子們做出什麼選擇，她都無條件地愛他們。)
undeniably
/ˌʌndɪˈnaɪəbli/
不可否認地
The evidence is undeniably pointing toward the suspect's involvement. (證據不可否認地指向嫌疑人的參與。)
under
/ˈʌndər/
在下面
The cat hid under while the vacuum cleaner was running. (吸塵器運行時，貓藏在下面。)
underground
/ˌʌndərˈɡraʊnd/
在地下
Many resistance movements had to operate underground during the occupation. (許多抵抗運動在占領期間不得不在地下運作。)
underneath
/ˌʌndərˈniːθ/
在下面、底下
The treasure was buried underneath in the old abandoned garden. (寶藏被埋在舊廢棄花園的底下。)
undoubtedly
/ʌnˈdaʊtɪdli/
無疑地
Undoubtedly, climate change is one of the biggest challenges we face today. (無疑，氣候變化是我們今天面臨的最大挑戰之一。)
unexpectedly
/ˌʌnɪkˈspektɪdli/
出乎意料地
He arrived unexpectedly at the party without any prior notice. (他在沒有任何預先通知的情況下出乎意料地出現在派對上。)
unfortunately
/ʌnˈfɔːrtʃənətli/
不幸地
Unfortunately, we couldn't complete the hike due to the sudden storm. (不幸的是，由於突如其來的暴風雨，我們無法完成徒步旅行。)
unhappily
/ʌnˈhæpɪli/
不快樂地
She unhappily agreed to cancel the trip because of the pandemic restrictions. (她不快樂地同意因疫情限制而取消旅行。)
uniformly
/ˈjuːnɪfɔːrmli/
一致地、均勻地
The paint must be applied uniformly to achieve a professional finish. (必須均勻地塗漆才能達到專業的效果。)
uniquely
/juːˈniːkli/
獨特地
Each student is uniquely qualified to bring different perspectives to the discussion. (每個學生都獨特地具備為討論帶來不同觀點的資格。)
universally
/ˌjuːnɪˈvɜːrsəli/
普遍地
The principle is not universally accepted among all scientific communities. (這一原則並未在所有科學界普遍接受。)
unjustly
/ʌnˈdʒʌstli/
不公正地
He felt unjustly accused of taking credit for someone else's work. (他感到被不公正地指控佔用他人的功勞。)
unlike
/ʌnˈlaɪk/
不像
Unlike her sister, she prefers outdoor activities to indoor hobbies. (不像她姐姐，她更喜歡戶外活動而非室內愛好。)
unnecessarily
/ʌnˈnesəsərəli/
不必要地
The manager unnecessarily prolonged the meeting with off-topic discussions. (經理以離題討論不必要地延長了會議。)
unquestionably
/ʌnˈkwestʃənəbli/
無疑問地
She is unquestionably the most talented musician in the orchestra. (她無疑問地是管弦樂隊中最有才華的音樂家。)
unsurprisingly
/ˌʌnsərˈpraɪzɪŋli/
不出所料地
Unsurprisingly, the popular tourist destination was crowded during the holiday. (不出所料地，這個受歡迎的旅遊目的地在假期間很擁擠。)
unusually
/ʌnˈjuːʒuəli/
異常地
The winter was unusually warm, breaking several temperature records. (冬天異常溫暖，打破了幾項溫度記錄。)
unwillingly
/ʌnˈwɪlɪŋli/
不情願地
She unwillingly agreed to work overtime to finish the urgent project. (她不情願地同意加班來完成緊急項目。)
upfront
/ˌʌpˈfrʌnt/
預先地、坦率地
The consultant told us upfront about all potential challenges we might face. (顧問預先告訴我們所有可能面臨的挑戰。)
uphill
/ˈʌphɪl/
上坡地、困難地
The journey uphill was strenuous but rewarded us with amazing views. (上坡的旅程很費力，但用令人驚嘆的景色回報了我們。)
upside down
/ˌʌpsaɪd ˈdaʊn/
顛倒地
The painting was accidentally hung upside down during the exhibition. (在展覽期間，這幅畫被意外地顛倒掛起來。)
upstairs
/ˌʌpˈsterz/
在樓上
The children ran upstairs to play in their bedroom. (孩子們跑到樓上在臥室裡玩耍。)
upward
/ˈʌpwərd/
向上地
Prices have been trending upward since the beginning of the year. (自年初以來，價格一直呈上升趨勢。)
urgently
/ˈɜːrdʒəntli/
緊急地
The hospital needs blood donors urgently following the major accident. (在重大事故之後，醫院緊急需要獻血者。)
uselessly
/ˈjuːsləsli/
無用地
He uselessly tried to fix the broken computer without proper tools. (他無用地試圖在沒有適當工具的情況下修理壞掉的電腦。)
usefully
/ˈjuːsfəli/
有用地
The time between meetings was usefully spent organizing next week's schedule. (會議之間的時間被有用地用於安排下週的行程表。)
usually
/ˈjuːʒuəli/
通常地
She usually goes for a jog in the park before starting her workday. (她通常在開始工作日之前去公園慢跑。)
utterly
/ˈʌtərli/
完全地
The team was utterly exhausted after the three-day competition. (三天比賽後，團隊完全筋疲力盡。)
upwardly
/ˈʌpwərdli/
向上地
The scientist adjusted the telescope upwardly to observe the distant galaxy. (科學家向上調整了望遠鏡以觀察遙遠的星系。)
utmost
/ˈʌtmoʊst/
極度地
The secret documents must be protected with utmost care and vigilance. (機密文件必須以極度謹慎和警覺進行保護。)
閱讀更多相關文章：
V 開頭的英文單字
W 開頭的英文單字
X 開頭的英文單字
II. 以字母 U 開頭的英語慣用語
英語中有許多以 U 開頭的慣用語和固定短語，這些表達方式豐富了語言，並在日常交流和書面溝通中起著重要作用。以下是一些常見的 U 開頭的英語慣用語及其用法解析。
以字母 U 開頭的英語慣用語
Under the weather：感到不適、身體不舒服。例如：Jenny called in sick because she was feeling under the weather. (Jenny 請病假是因為她感到身體不適。)
Up in the air：已經完成、已經獲得。例如：With three years of experience under her belt, she applied for the senior position. (憑藉三年的經驗，她申請了高級職位。)
Under one's belt：已經完成、已經獲得。例如：With three years of experience under her belt, she applied for the senior position. (憑藉三年的經驗，她申請了高級職位。)
Up to no good：正在做壞事、有不良企圖。例如：When the teenagers gathered in the parking lot after dark, neighbors suspected they were up to no good. (當青少年在天黑後聚集在停車場時，鄰居懷疑他們正在做壞事。)
Under the gun：在壓力下、急著完成。例如：The team is under the gun to finish the project before the deadline next week. (團隊正在壓力下趕在下週截止日期前完成項目。)
Up to date：最新的、現代的。例如：Make sure your resume is up to date before applying for the job. (在申請工作前確保你的簡歷是最新的。)
Under the table：秘密地、非法地。例如：The restaurant was paying some employees under the table to avoid taxes. (該餐廳秘密支付一些員工工資以逃稅。)
Up against the wall：處於困境、陷入絕境。例如：With mounting debts and no income, the company was up against the wall. (隨著債務增加和沒有收入，該公司陷入了困境。)
Under one's nose：就在眼前、顯而易見。例如：The solution to the problem was right under our nose the whole time. (問題的解決方案一直就在我們眼前。)
Up for grabs：可供爭取的、可得到的。例如：The promotion is up for grabs, and several employees have applied for it. (這個晉升職位可供爭取，幾名員工已經申請了。)
Under the influence：受影響的、醉酒的。例如：Driving under the influence of alcohol is illegal and dangerous. (在酒精影響下駕駛是非法且危險的。)
Up to scratch：達到標準的、合格的。例如：His performance wasn't up to scratch, so he didn't pass the audition. (他的表現未達標準，所以他沒有通過試鏡。)
Under wraps：保密的、未公開的。例如：The company is keeping its new product line under wraps until the launch event. (公司在發布會前對其新產品線保密。)
Up the creek (without a paddle)：處於困境、難以解決的情況。例如：If we miss this deadline, we'll be up the creek without a paddle. (如果我們錯過這個截止日期，我們將陷入難以解決的困境。)
Up to one's ears：極其忙碌、深陷其中。例如：I'm up to my ears in work this week and can't take on any more projects. (本週我極其忙碌，無法承擔更多項目。)
III. 以 U 開頭的英文單字練習
學習單字不僅需要記憶，還需要透過練習來鞏固。以下提供一些練習活動，幫助您掌握 U 開頭的英文單字。
1. 填空練習
嘗試填入適當的 U 單字完成以下句子：
unbiased、university、unbelievable、unfair、uncertain、uniform、urgently、underline、uncover、untouched
The company provides a _______ policy for all employees regardless of their position.
Scientists are still _______ about the long-term effects of this new medication.
The teacher asked students to _______ all the verbs in the passage.
It's _______ to blame one person for a mistake the whole team made.
She spoke _______ about the need to address climate change now.
His _______ performance earned him a standing ovation from the audience.
The detective was able to _______ new evidence that changed the direction of the investigation.
Many students choose to attend a _______ after graduating from high school.
The documentary offers an _______ view of the historical event.
The remote village remains largely _______ by modern development.
2. 詞彙配對練習
將以下 U 的單字與其正確的定義配對：
英語詞彙
意義
Unanimous
Utilize
Unveil
Ultimate
Uphold
Unravel
Upgrade
Undergo
Uproot
Urge
維護、支持
利用
全體一致的
最終的、極限的
为…揭幕
經歷、承受
連根拔起、使離開家園
解開、揭示
敦促、催促
升級
3. 回答
練習 1
練習 2
uniform
uncertain
underline
unfair
urgently
unbelievable
uncoveruniversity
unbiased
untouched
C
B
E
D
A
H
J
F
G
I
通過本文的詳細解析和練習，您已經掌握了超過150+個以字母 U 開頭的英文單字，包括常用名詞、動詞、形容詞、副詞以及實用慣用語。這些 U 開頭的單字不僅豐富了您的詞彙量，也提高了您在聽、說、讀、寫各方面的英語能力。
持續練習和使用這些單字是鞏固記憶的關鍵。透過本文提供的填空、配對和寫作練習，您可以將這些單字應用到實際情境中，進一步提升您的英語表達能力。記住，語言學習是一個持續的過程，即使是以較不常見字母如 U 開頭的單字，也是構建全面英語能力的重要元素。
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