U
umbrel a[ʌm'brelə]n. 伞
Let me fetch an umbrella for you. 让我去拿一把伞给你。
He lent his umbrella to me yesterday. 昨天他把他的伞借给我了。
uncle['ʌŋkl]n. 叔;伯;舅;姑夫;姨父
I will go to the airport to pick up Uncle Jim. 我会赶到机场接吉姆叔叔。
What are you doing, Uncle Li? 李叔叔,你在做什么?
under['ʌndə(r)]adv. & prep. 在……下面,向……下面
He sat down under the tree. 他坐在树下。
He disliked putting gifts under the Christmas tree. 他不喜欢把礼物放在圣诞树下。
underground[ˌʌndə'graʊnd]adj. 地下的 n. 地铁
The London Underground is very famous. 伦敦地铁非常有名。
The underground defense will be stronger. 地下的防卫要加强。
underline[ˌʌndə'laɪn]vt. 在……下画线;强调;使突出
Translate the underlined sentence into Chinese. 将画线的句子翻译成汉语。
Please underline the important items. 请在重要事项的下面画线。
understand [ ˌʌndə'stænd ] (understood , understood) vt. & vi.懂;理解 vt. 了解;领会
I found their accents difficult to understand. 我觉得他们的口音很难懂。
What she says can be understood very clearly. 她所说的都很容易理解。
unhappy[ʌn'hæpi]adj. 不开心的;不幸福的;难过的
I don't like to make people unhappy. 我不喜欢让人不高兴。
He is unhappy. 他不开心。
unhealthy[ʌn'helθi]adj. 不健康的
Don't eat unhealthy food. 别吃不健康食物。
It was an unhealthy habit. 这是一个陋习。
uniform['juːnɪfɔːm]n. 制服
He has to wear uniforms to work. 他上班必须穿制服。
Most children wear uniforms at school. 大多数孩子在学校穿校服。
unit['juːnɪt]n. 单元;单位;部件
The family is the smallest social unit. 家庭是社会最小的单位。
Every unit must send someone to take the document. 各单位必须派人去领文件。
united[ju'naɪtɪd]adj. 联合的;统一的
We are trying to form a united front. 我们正试图结成一个联合阵线。
The people of the whole country are united. 全国人民万众一心。
university[ˌjuːnɪ'vɜːsəti]n. (综合性)大学
He entered the university when he was eighteen. 他18岁的时候进入大学学习。
He graduated from Tsinghua University. 他毕业于清华大学。
unless[ən'les]conj. 如果不;除非
We can't pass the exam, unless we study hard. 我们不能通过考试,除非努力学习。
Unless I am mistaken, I've seen you somewhere before. 除非我弄错了,我觉得之前在哪儿见过你。
until[ən'tɪl]prep. & conj. 直到……为止
He lived in the USA until 1953. 1953年以前他一直居住在美国。
He did not leave until the operation was over. 他直到手术结束才离开。
unusual[ʌn'juːʒuəl]adj. 不寻常的
She has a very unusual name. 她的名字不太常见。
It's an unusual experience. 这是一次不同寻常的经历。
up[ʌp]prep. & conj. 向上;在上方;起来
He held up a glass of water. 他拿起一杯水。
She gets up early every morning. 她每天早上早起。
upset[ʌp'set]adj. 心烦的;难过的
Betty is upset about a coming exam. 贝蒂为即将到来的考试感到很心烦。
Don't be upset. 别苦恼了。
upstairs[ˌʌp'steəz]adv. 在楼上;到楼上
Then we went upstairs. 接着我们上楼去了。
Please take the escalator upstairs. 请乘扶梯上楼。
use[juːz] vt. 利用;使用;应用;用途;用法 [juːs]n. 利用;使用
Computers are widely used in many areas. 计算机被广泛应用于很多领域。
Many people are trying to reduce the use of cars in Britain. 许多英国人试图减少开车的次数。
useful['juːsfl]adj. 有用的;有益的
The Internet is really useful to us. 网络对我们的确有用。
The animals are useful to the desert people in many ways.对于沙漠居民来说,动物在很多方面对他们都很有用。
useless['juːsləs]adj. 无用的;废旧的
I saw that the plan was useless. 我看出那个计划是没有用的。
This book is useless. 这本书没用了。
usual['juːʒuəl, 'juːʒəl]adj. 通常的;平常的
As usual, there were many people at the meeting. 像平常一样,来开会的人很多。
Our usual price for repair is 10 yuan. 我们通常的修理费是10元。
usual y['juːʒuəli, 'juʒəli]adv. 通常;经常
Usually I go out and have dinner in a restaurant. 通常我出去在饭店里吃饭。
The British usually hide their feelings. 英国人通常会掩饰他们的感情。