以U开头的英语单词有那些？

U ugly adj.难看的 ultimately ad.最终，最后 umbrella n.伞 unable adj.不能的，不会的 unbearable a.难堪的，忍受不了的 uncertain a.无常的；不确定的 uncertainty n. 不确定,不可靠,半信半疑 uncle n.叔，伯，舅，姨父 uncomfortable a.不舒服的；不自在的 uncommon a. 不寻常的,不凡的,罕有的 unconscious a.不省人事的 uncover vt.&vi.揭开...的盖子 under prep.在...下面 underestimate vt.低估，看轻 undergo vt.经历，经受，忍受 undergraduate n.大学肆业生 underground adj.地下的 underline vt.着重；预告 underneath ad.在下面，在底下 understand vt.懂；获悉 vi.懂得 understanding n.理解；理解力；协定 undertake vt.约定，保证；从事 undesirable a.不合需要的；讨厌的 undo vt.解开，打开；取消 undoubtedly ad.无容置疑，肯定地 uneasy a.不安的；拘束的 unemployment n.失业；失业人数 unexpected a.想不到的，意外的 unfair adj.不公平的 unfit adj.不合适的 unfold vt.展开 vi.呈现 unfortunate a.不幸的；可取的 unfortunately ad.不幸地 unhappy a.不幸福的，不快乐的 uniform a.一样的 n.制服 uniformly ad.相同地；一贯 union n.联合；联合会，团结 unique a.唯一的，独一无二的 unit n.单位；单元；部件 unite vi.联合 vt.使联合 ultimate a.最后的，最终的 unity n.单一；统一；团结 universal a.宇宙的；普遍的 universally ad.普遍地，一般地 universe n.宇宙，世界 university n.综合性大学 unjust a.非正义的；不公平的 unkind a.不仁慈的，不和善的 unknown adj.不为人所知的 unless conj.除非，如果不 unlike a.不同的 prep.不象… unlikely a.未必的，未必可能的 unlimited a.无限的；不定的 unload vt.从...卸下货物 unlock vt.开门，箱等 unlucky a.不幸的；不吉的 unnecessary a.不必要的，多余的 unpaid a.未付的；不支薪水的 unpleasant a.令人不快的，讨厌的 unreasonable a.不讲道理的；过度的 unsatisfactory a.不能令人满意的 unstable a.不稳固的；不稳定的 unsuitable a.不合适的，不适宜的 untie vt.解开，松开；解放 until conj.直到...为止 unusual adj.不常见的；奇异的 unusually a.不平常地，非常 unwilling a.不愿意的 up ad.向上；起床，起来 uphold vt.举起；支撑；赞成 upon prep.在...上面 upper a.上面的；地位较高的 upright a.垂直的；正直的 uproar n.骚动，扰乱；喧嚣 upset adj.难过的；不安的 upside-down a.颠倒的，乱七八糟的 upstairs adv.在楼上adj.楼上的 up-to-date a.直到最近的，现代的 upward adv.向上 urban a. 城市的 urge vt.激励；催促 urgent a.紧急的；强求的 us pron.(宾格)我们 usage n.使用，对待；惯用法 use vt.用；耗费 n.用 used vi.过去常常 useful adj.有用的；有益的 useless a.无用的，无价值的 user n.用户，使用者 usual adj.通常的；平常的 usually adv.通常 utility n.效用，有用，实用 utilization n.利用，效用 utilize vt.利用 utmost a.最远的 n.极限 utter a.完全的，彻底

英文介绍你最喜欢的一个app，英语作文100词

Nowdays,there many apps on our smartphone,them help us to deal with the problem we met in daily life.Take myself as an example:my fovorite app is baidizhidao.When I was troubled by some problmes,I always tend to smart people on baiduzhidao for help.Its a really useful app.
in my spare time,I also will tap the logo on my cellphone to check if there are any one I can use my limited knowledge to help.Its really nice to share your idea and opinion with others

英语作文 以The most useful invention ——computer 为题，写不少于60字的英语作文

The most useful invention ——computer
We knew there had been many inventions last century, for example, electric light bulb, telephone, phonograph, mimeograph machine, automobile, airplane, atomic weapon, computer and so on. What is the most useful invention?
Personally, the most useful invention should be computer. In the old days, many scientists took much time to calculate and deal with research data, so the effective time in doing research was relatively shortened. For millions of times of calculating per second by computer, the researchers may have enough time to study more important issues. The processing of experiment results became very simple and easy. Aren’t those all evidences that the computer is one of the greatest inventions in the last century, are those?
So I think the most useful invention is computer.

表示“优点”“缺点”“有利”“不利”的英语表达

优点：merit；strong point；advantage；virtue 每个人都有自己的 优点。 Each person has his own strong points. 它具有价格便宜、便于携带和易于操作的三重 优点。 It possesses the triple advantage of being inexpensive，portable，and easy to operate. 缺点：shortcoming；defect；weak point；weakness；disadvantage；draw back 克服缺点 overcome ones short comings; 这种药的主要 缺点 是使胃不适。 The chief drawback of this medicine is that it spoils your appetite. 我们大家都有 缺点。 We all have our weaknesses. 这个杯子一点儿 缺点 也没有。 Theres nothing at all wrong with this cup. 不守时间是他最大的 缺点。 Not being punctual is his greatest shortcoming. 助听器有助于克服听觉上的 缺点。 A hearing-air helps to overcome defects in hearing. 有利：advantageous；beneficial；favourable 有利于健康 beneficial to health 不利：unfavourable；disadvantageous；harmful；detrimental 不利因素 unfavourable factors; 不利条件 adverse conditions; 出师不利 in war or sports lose the first battle; 那将对我们双方都 不利。 It will be to our mutual disadvantage. 希望这是你要的回答！