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B 开头单词四级词汇专八核心词托福词汇高考词汇

音标发音

  • 英式音标 [bæk]
  • 美式音标 [bæk]
  • 英式发音
  • 美式发音

基本解释

  • n. 背部；脊梁骨；后部；背面；末尾；（椅子）靠背；后卫；船体；（飞机）机身；（人的）躯干；
  • adj. 后面的；背后的；过去的；拖欠的；舌后的
  • adv. 向后地；向后仰地；在背面；有距离地；忍住地；回原处；以前地；在前面地；回报；落后地；恢复正常；再度流行；
  • v. （使）后退，倒退；支持；下赌注；赞成；增援；伴奏；附带收录进……；逆时针转向；收帆；背对着；在……背后加固；位于……的后面
  • n. (Back) （美）巴克（人名）

同根派生

  • adj性质的同根词
    backward：向后的；反向的；发展迟缓的。
    backed：有背的；有财力支持的。
    backless：无背的；无靠背的；无后盾的。
    backmost：最后面的。
  • adv性质的同根词
    backward：向后地；相反地。
  • n性质的同根词
    backing：支持；后退；支持者；衬背。
    backer：支持者；赞助人；援助者。
    backwardness：落后；迟疑；畏缩；腼腆。
  • v性质的同根词
    backing：支持（back的ing形式）。
    backed：支持；使后退（back的过去分词）。

用法辨析

    n. (名词)

  • back用作名词的基本意思是表示人的“背；背部”和表示某物的“后面；后部”。引申可作“椅背”“后襟”等解。用于球类运动则指“后卫”。
  • back作“后面”“背面”“反面”解时用单数形式,其前须加定冠词the。在表示较近的“后面,背面”时用on the back of；在表示较远的“后面”时用at the back of(范围之外)或in the back of(范围之内)，在美式英语中at〔in〕可省略。

    • v. (动词)

  • back的基本意思是“(使)后退”,指某人或某物回到原来的位置或状态。有时引申可表示“支持”,即“作后盾”。
  • back可用作及物动词或不及物动词,用作及物动词时接名词或代词作简单宾语。

    • adj. (形容词)

  • back表示位置或方向时意思是“后面的,往后的”。也可表示时间作“过去的,过期的”“迟交的,欠交的”解,在句中只用作定语。
  • back在语音学中也可作“后元音的”解。
  • back在句中只用作定语,不用于比较等级。

    • adv. (副词)

  • back用作副词的基本意思是“往后,在后面”,也可引申表示“忍住”“恢复”或“上溯”。
  • back常修饰动态动词(如不及物动词go, come, get,及物动词bring, get, take等),在句中作状语,也可用作表语。
  • back和be连用可引申表示“恢复”; back和beat, hit, fight等动词连用可表示“打退”。
  • back作“来回；向后”解时一般不与turn连用。

英汉例句

    用作名词 (n.)

  • There used to be a big and beautiful garden at the back of their house.
    以前在他们房子的后方是一个大花园。

    • 用作动词 (v.)

    用作不及物动词: S+～(+A)

  • The horse backed suddenly.
    马突然向后倒退。

    • 用作及物动词: S+～+ n./pron.

  • I hope you will back my thought.
    我希望你能支持我的想法。

    • 用作形容词 (adj.)

    用作定语: ～+ n.

  • On the back wall there is a map of China.
    后墙上有一幅中国地图。

    • 用作副词 (adv.)

    用作状语

  • The crowd fell back to let the fire engine through.
    人群向后退去,以便给消防车让路。

    • 用作表语

  • He will be back before the month is out.
    他将在月底前回来。

    • 用作宾语补足语

  • That smell of freshly baked bread carries me back!
    新烤面包的气味使我忆起往事!

词组短语

    用作名词 (n.)

    动词+～

  • break one 's back 拼命干,尽最大努力
  • break the back of sth 完成某事最艰难的部分
  • get sb 's back up 触怒某人
  • get off sb 's back 不再找某人的麻烦
  • give sb one 's back 不理睬某人

英英字典

    剑桥英英字典

  • (RETURN) in, into, or towards a previous place or condition, or an earlier time
  • (FURTHER AWAY) further away in distance
  • (FURTHEST PART) the inside or outside part of an object, vehicle, building, etc. that is furthest from the front
  • (BODY PART) the part of your body that is opposite to the front, from your shoulders to your bottom
  • (SPORT) (in some sports, such as football) one of the players in a team who try to stop players from the other team from scoring goals, rather than trying to score goals himself or herself
  • (SUPPORT) to give support to someone or something with money or words
  • (RISK MONEY) to risk money by saying that you think a horse, team, etc. will win a race, game, or competition in order to win more money if they do
  • (MOVE AWAY) to (cause to) move backwards
  • (COVER) to cover the back of something with a material, often to make it stronger or thicker
  • (POSITION) at or near the back of something
  • (PAID LATER) paid after the end of a period of time when it should have been paid

    • 柯林斯英英字典

  • If you move back, you move in the opposite direction to the one in which you are facing or in which you were moving before.
  • If you go back somewhere, you return to where you were before.
  • If someone or something is back in a particular state, they were in that state before and are now in it again.
  • If you give or put something back, you return it to the person who had it or to the place where it was before you took it. If you get or take something back, you then have it again after not having it for a while.
  • in reply, repayment, or retaliation
  • If you put a clock or watch back, you change the time shown on it so that it shows an earlier time, for example, when the time changes to standard time.
  • If you write or call back, you write to or telephone someone after they have written to or telephoned you. If you look back at someone, you look at them after they have started looking at you.
  • You can say that you go or come back to a particular point in a conversation to show that you are mentioning or discussing it again.
  • If something is or comes back, it is fashionable again after it has been unfashionable for some time.
  • If someone or something is kept or situated back from a place, they are at a distance away from it.
  • If something is held or tied back, it is held or tied so that it does not hang loosely over something.
  • If you lie or sit back, you move your body backward into a relaxed sloping or flat position, with your head and body resting on something.
  • If you look or shout back at someone or something, you turn to look or shout at them when they are behind you.
  • You use back in expressions like back in Chicago or back at the house when you are giving an account, to show that you are going to start talking about what happened or was happening in the place you mention.
  • If you talk about something that happened back in the past or several years back, you are emphasizing that it happened quite a long time ago.
  • If you think back to something that happened in the past, you remember it or try to remember it.
  • If someone moves back and forth, they repeatedly move in one direction and then in the opposite direction.
  • to cast your mind back&rarrsee mind
  • A person's or animal's back is the part of their body between their head and their legs that is on the opposite side to their chest and stomach.
  • The back of something is the side or part of it that is toward the rear or farthest from the front. The back of something is normally not used or seen as much as the front.
  • Back is used to refer to the side or part of something that is toward the rear or farthest from the front.
  • (of a road) not direct
  • The back of a chair or sofa is the part that you lean against when you sit on it.
  • The back of something such as a piece of paper or an envelope is the side that is less important.
  • The back of a book is the part nearest the end, where you can find the index or the notes, for example.
  • a mainly defensive player behind a forward
  • the position of such a player
  • You use out back to refer to the area behind a house or other building. You also use in back to refer to the rear part of something, especially a car or building.
  • If you say that something was done behind someone's back, you disapprove of it because it was done without them knowing about it, in an unfair or dishonest way.
  • If two or more things are done back to back, one follows immediately after the other without any interruption.
  • &rarrsee also back-to-back
  • If you are wearing something back to front, you are wearing it with the back of it at the front of your body. If you do something back to front, you do it the wrong way around, starting with the part that should come last.
  • to take a back seat&rarrsee seat
  • If a building backs onto something, the back of it faces in the direction of that thing or touches the edge of that thing.
  • When you back a car or other vehicle somewhere or when it backs somewhere, it moves backward.
  • If you back a person or a course of action, you support them, for example, by voting for them or giving them money.
  • If you back a particular person, team, or horse in a competition, you predict that they will win, and usually you bet money that they will win.
  • If a singer is backed by a band or by other singers, they provide the musical background for the singer.

专业释义

    医药科学

  • 背

    • 交通运输工程

  • (船的)龙骨
  • (风)逆时针转向[与 veer 相反]：
  • (推进器叶、螺旋桨叶等的)叶背；上表面(与 face 相反)
  • 反向的(= reciprocal)
  • 背面

    • 机械工程

  • 后面
  • 底座
  • （车刀）后刃面

    • 语言学

  • 舌后的，舌根的，后(元音)的(如 cool 中的 ／u:／，如 go 中的两个音)

    • 体育

  • (十八穴高尔夫球场的)后九穴的
  • 后撤(防守性)击球的
  • 后卫

    • 地球科学

  • 巷道顶板
  • 回灌井

    • 物理学

  • 反的

    • 航空、航天科学技术

  • (推进器叶、螺旋桨叶等的)叶背；上表面(与 face 相反)
  • 机身上部

    • 计算机科学技术

  • 返回
  • 背面

    • 电子、通信与自动控制技术

  • 背面

    • 生物学

  • 反面
  • 反