Question

useless adj.无用的；无效的 (1) 这是一场剧烈而无用的挣扎。(2) 请把无用的词划掉。(3) 当裁判宣布你出局时，任何辩解都是无效的，因为他的判决不可更改。 Less means "without." So something that is useless has no use or value, at least at the present time. Long ago, many blacksmiths concluded it was useless to try to get by making horseshoes after the automobile caught on. Their tools and supplies? Useless, so they thought. They moved on to other careers. Some even bought Fords. Fast forward about a hundred years. Ask antiques dealers if is it useless to present artifacts for sale to history buffs.

Accepted Answer

英 ['juːsləs] 美 ['juːsləs] (1) It was an intense but useless struggle.(2) Please cancel the words which are useless.(3) When the umpire says you are out, it is useless to argue because his decision is irrevocable. When all else fails, you still have the word useless. Use this adjective when nothing is working and there is no hope of improvement. 1[ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]无用的；无价值的 If something is useless, you cannot use it.   [usu v-link ADJ]He realised that their money was useless in this country...他意识到他们国家的货币在这个国家一文不值。Computers would be useless without software writers.没有编软件的人，计算机就会毫无价值。uselesslyHis right arm hung rather uselessly.他的右臂无力地耷拉着。uselessnessThe car had rusted almost to the point of uselessness.这车已经锈得几乎一点用都没有了。2[ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]无益的；无效的；不能收到效果的 If something is useless, it does not achieve anything helpful or good.   [oft it v-link ADJ to-inf]She knew it was useless to protest.她知道抗议是没有意义的。...a useless punishment which fails to stop drug trafficking.无法制止贩毒活动的无效惩罚uselesslyUselessly, he checked the same pockets he'd checked before.他把先前检查过的那些口袋又查了一遍，毫无收获。uselessness...the uselessness of their research.他们的研究毫无价值3[ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]差劲的；不行的 If you say that someone or something is useless, you mean that they are no good at all.   [oft ADJ at n]  [INFORMAL 非正式]Their education system is useless...他们的教育体制真差劲。He was useless at any game with a ball.任何球类运动他都玩不好。4[ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]无能的；无用的 If someone feels useless, they feel bad because they are unable to help someone or achieve anything. She sits at home all day, watching TV and feeling useless.她整天坐在家里，看着电视，觉得自己一无是处。uselessness...the sense of uselessness and the boredom of empty days.空虚日子里感受到的百无聊赖和烦闷无聊

英语单词	useless
英美音标	英 ['juːsləs] 美 ['juːsləs]
中文释义	adj.无用的；无效的
英语例句	(1) It was an intense but useless struggle. (2) Please cancel the words which are useless. (3) When the umpire says you are out, it is useless to argue because his decision is irrevocable.
中文例句	(1) 这是一场剧烈而无用的挣扎。 (2) 请把无用的词划掉。 (3) 当裁判宣布你出局时，任何辩解都是无效的，因为他的判决不可更改。
vocabulary简明	When all else fails, you still have the word useless. Use this adjective when nothing is working and there is no hope of improvement.
vocabulary扩展	Less means "without." So something that is useless has no use or value, at least at the present time. Long ago, many blacksmiths concluded it was useless to try to get by making horseshoes after the automobile caught on. Their tools and supplies? Useless, so they thought. They moved on to other careers. Some even bought Fords. Fast forward about a hundred years. Ask antiques dealers if is it useless to present artifacts for sale to history buffs.
柯林斯解释	1 [ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]无用的；无价值的 If something is useless, you cannot use it. [usu v-link ADJ] He realised that their money was useless in this country... 他意识到他们国家的货币在这个国家一文不值。 Computers would be useless without software writers. 没有编软件的人，计算机就会毫无价值。 uselessly His right arm hung rather uselessly. 他的右臂无力地耷拉着。 uselessness The car had rusted almost to the point of uselessness. 这车已经锈得几乎一点用都没有了。 2 [ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]无益的；无效的；不能收到效果的 If something is useless, it does not achieve anything helpful or good. [oft it v-link ADJ to-inf] She knew it was useless to protest. 她知道抗议是没有意义的。 ...a useless punishment which fails to stop drug trafficking. 无法制止贩毒活动的无效惩罚 uselessly Uselessly, he checked the same pockets he'd checked before. 他把先前检查过的那些口袋又查了一遍，毫无收获。 uselessness ...the uselessness of their research. 他们的研究毫无价值 3 [ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]差劲的；不行的 If you say that someone or something is useless, you mean that they are no good at all. [oft ADJ at n] [INFORMAL 非正式] Their education system is useless... 他们的教育体制真差劲。 He was useless at any game with a ball. 任何球类运动他都玩不好。 4 [ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]无能的；无用的 If someone feels useless, they feel bad because they are unable to help someone or achieve anything. She sits at home all day, watching TV and feeling useless. 她整天坐在家里，看着电视，觉得自己一无是处。 uselessness ...the sense of uselessness and the boredom of empty days. 空虚日子里感受到的百无聊赖和烦闷无聊

Useless Adj Graded 能被表示程度的副词或介词词组修饰的形容词 Uselessness Present V Link Uselessly Achieve