hard

音標發(fā)音

• 英式音標 [hɑ?d]
• 美式音標 [hɑ?rd]
• 國際音標 [hɑ:d]
• 英式發(fā)音
• 美式發(fā)音

基本解釋

• adj. 努力的；硬的；困難的；辛苦的；確實的；嚴厲的；猛烈的；冷酷無情的
• adv. 努力地；困難地；辛苦地；接近地；猛烈地；牢固地
• n. （Hard）人名；(英、芬、瑞典)哈德

詞源解說

• 直接源自古英語的heard，意為固體的，結(jié)實的，不軟的；最初源自原始日耳曼語的kharthus。

同根派生

• adj性質(zhì)的同根詞

  hardened：變硬的；堅定的。

  hardy：堅強的；勇敢的；能吃苦耐勞的；魯莽的。

• n性質(zhì)的同根詞

  hardship：困苦；苦難；艱難險阻。

  hardness：[物]硬度；堅硬；困難；冷酷。

  hardy：強壯的人；耐寒植物；方柄鑿。

  hardening：硬化；淬火；鍛煉。

• v性質(zhì)的同根詞

  hardened：堅定，變硬（harden的過去分詞）。

  hardening：硬化；使強壯（harden的ing形式）。

• vi性質(zhì)的同根詞

  harden：變硬，變堅固；變堅強；變冷酷。

• vt性質(zhì)的同根詞

  harden：使…變硬；使…堅強；使…冷酷；使…麻木不仁。

• hard相關(guān)詞

用法辨析

adj. (形容詞)

• hard作“困難的”解時,指要消耗很大的體力去做某事,有時也指精神上的困難。
• hard還可表示“費力的,費神的,艱難的” “持強硬態(tài)度的,不妥協(xié)的,不讓步的” “有力的,猛烈的,嚴厲的” “困苦的,難以忍受的” “(聲音)刺耳的,(顏色)刺目的” “酒精含量高的”等。
• hard在句中可用作定語或表語,其后可跟for〔to, with〕等介詞短語、動詞不定式、that從句。
• hard是對主語具有評價意義的形容詞,說明主語在哪方面“難”。接動詞不定式時,句子的主語不是該不定式的主語,而是該不定式的賓語。

adv. (副詞)

• hard修飾動態(tài)動詞,位于實義動詞之后。
• hard一般表示“困難的”。This is a hard question to answer. 這是個難題，不好回答。
• hard在hard of hearing（有些聾的）中有特殊含義“艱難的”，注意不適合用在別處；
• hard后可接of和表示動作的名詞。This food is hard of digestion. 這個食物很難消化。
• 注意hard一般不會和impossible連用，可選擇將difficult同impossible連用。It is hard, if not impossible. 這個表達是錯誤的。

• hard使用方法
• hard詳細辨析

英漢例句

用作形容詞 (adj.)

用作定語: ～+ n.

• Make a hard knot.
  打一個結(jié)實的結(jié)。

n. +～

• That's a hill hard to climb.
  那是座難爬的山。

用作表語: S+be+～

• This bit of wood feels hard.
  這塊木頭摸起來很硬。

S+be+～+ prep .-phrase

• This job will be hard for me.
  這工作對我來說將會是很困難的。

S+be+～+(for sb) to- v

• The poem is hard to understand.
  這首詩難懂。

S+be+～+that-clause

• This candy is so hard that no one can chew it.
  這種糖太硬,沒人嚼得動。

It is/was+～+(for sb) to- v

• It's hard to know what he's really thinking.
  很難知道他到底在想什么。

用作賓語補足語: S+V+O+～

• Regular physical exercises soon made the boys hard.
  經(jīng)常的運動使那些男孩的身體很快變結(jié)實了。

用作副詞 (adv.)

用作狀語

• They tried hard to succeed.
  他們盡力設(shè)法取得成功。

• hard更多例句

詞組短語

用作形容詞 (adj.)

～+名詞

• hard bargain 大肆討價還價
• hard customer 挑剔的顧客
• hard face 難看的臉
• hard heart 鐵石心腸
• hard job 艱苦的工作

• hard更多詞組

英英字典

劍橋英英字典

• (SOLID) not easy to bend, cut, or break
• (DIFFICULT) difficult to understand, do, experience, or deal with
• (USING EFFORT) needing or using a lot of physical or mental effort
• (SEVERE) not pleasant or gentle; severe
• (ALCOHOL) A hard drink contains a high level of alcohol.
• (WATER) Hard water contains a high level of minerals that prevent soap from cleaning.
• (CLEAR) able to be proved
• (WEATHER) used to describe a time when there is bad weather
• (USING EFFORT) with a lot of physical or mental effort
• (WEATHER) If it rains or snows hard, it rains or snows a lot.

柯林斯英英字典

• Something that is hard is very firm and stiff to touch and is not easily bent, cut, or broken.
• hardness
• Something that is hard is very difficult to do or deal with.
• If you work hard doing something, you are very active or work intensely, with a lot of effort.
• Hard is also an adjective.
• Hard work involves a lot of activity and effort.
• If you look, listen, or think hard, you do it carefully and with a great deal of attention.
• Hard is also an adjective.
• If you strike or take hold of something hard, you strike or take hold of it with a lot of force.
• Hard is also an adjective.
• You can use hard to indicate that something happens intensely and for a long time.
• If a person or their expression is hard, they show no kindness or sympathy.
• If you are hard on someone, you treat them severely or unkindly.
• Hard is also an adverb.
• If you say that something is hard on a person or thing, you mean it affects them in a way that is likely to cause them damage or suffering.
• If you have a hard life or a hard period of time, your life or that period is difficult and unpleasant for you.
• hardness
• Hard evidence or facts are definitely true and do not need to be questioned.
• Hard drugs are very strong illegal drugs such as heroin or cocaine.
• If you say that something is hard going, you mean it is difficult and requires a lot of effort.
• To be hard hit by something means to be affected very severely by it. ...
• If someone plays hard to get, they pretend not to be interested in another person or in what someone is trying to persuade them to do.

• hard劍橋字典
• hard柯林斯字典

專業(yè)釋義

經(jīng)濟學

• （貨幣）可兌換黃金的
• （錢幣）金屬制的
• 硬的

醫(yī)藥科學

• 結(jié)實又硬的
• （身體）結(jié)實的

交通運輸工程

• 到極限地

化學

• 安定的，難合成的；(化學制品)難分解的
• （洗滌劑等）非生物降解性的
• 硬的

物理學

• (x射線等)具強大穿透力的，硬(性)的

航空、航天科學技術(shù)

• (飛行器著陸)硬的，碰撞的

軍事學

• 設(shè)重防的；(導(dǎo)彈發(fā)射場等)設(shè)于地下的

攝影

• （底片等）高反差的

食品科學技術(shù)

• 堅硬的

計算機科學技術(shù)

• 硬的