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BNC: 7076 COCA: 7869

ineffective

Word family 
in·ef·fec·tive /ˌɪnəˈfektɪv◂/ ●○○ adjectiveadj  
EFFECTIVEsomething that is ineffective does not achieve what it is intended to achieve 无效果的，不起作用的，不奏效的 OPP effective
ineffective in doing something
 The chemical was almost totally ineffective in killing the weeds.
这种化学品除杂草几乎一点用也没有。
ineffective against
 Various drugs have proved ineffective against the virus.
许多药物经证明都对这种病毒无效。
 an ineffective marketing campaign
一场毫无成效的营销活动
—ineffectively adverbadv
—ineffectiveness noun [uncountableU]
 the ineffectiveness of most diets
大多数节食的无效
 Register
In everyday English, people usually say that something does not work rather than saying that it is ineffective: 日常英语中一般说do not work，而不说be ineffective
These drugs don’t work against bird flu.
这些药对禽流感无效。
Examples from the Corpus
ineffective• Efforts to get homeless people off the streets have been largely ineffective.• I sometimes feel that she is just totally ineffective in this job.• A combination of ineffective management and inadequate investment brought about this collapse.
ineffective in doing something• At this stage the C- field is also ineffective in stopping gravitational contraction.• Does this mean that absolution by the patient is ineffective in relieving the doctor of his duty?• However, although there was no damage to the crop, the herbicide was almost totally ineffective in killing the weeds.• However, glucocorticoids are usually ineffective in the hypercalcemia of primary hyperparathyroidism, Phosphate also inhibits bone resorption.• It is ineffective in hypoglycaemia induced by alcohol, in which liver glycogen is already depleted.• Kamieniecki was pressed into duty as a starter because Jimmy Key had been ineffective in Game 1.• Many of her leadership behaviors seen as productive in the low slack system prove ineffective in the high slack company.• On the crucial issue of land ownership, the many agrarian laws passed in various States have been ineffective in practice.
in·ef·fec·tive adjectiveadj →REGISTER1
Chinese
Syllable
Corpus
BNC: 7076 COCA: 7869
ineffective

adjective

VERBS | ADVERB | PREPOSITION VERBS➤be, prove, seem無效；證明無效；似乎無效◇These policies have proved ineffective.事實證明這些政策並不奏效。➤become變得無效▸➤make sth, render sth使⋯不起作用；使⋯無效◇The contract was rendered ineffective by this careless wording.措辭不慎致使這份合同失效。ADVERB➤extremely, fairly, very, etc.效果極其／相當／非常不好▸➤highly效果極其不好▸➤completely, entirely, totally完全無效；絲毫不起作用➤largely在很大程度上無效➤politically政治上不起作用PREPOSITION➤against對⋯無效◇These weapons are totally ineffective against tanks.這些武器在坦克面前根本不起作用。➤in在⋯方面無效◇chemicals that are very ineffective in killing weeds除草效果很差的化學品
BNC: 7076 COCA: 7869
ineffective

adjective

ineffective ♦︎ inefficient ♦︎ unproductive ♦︎ counterproductive ♦︎ ineffectual ♦︎ self-defeatingThese words all describe sth that does not achieve what is wanted or intended, or sb/sth that does not achieve very much. 这些词均表示不起作用的、效果不佳的。PATTERNS AND COLLOCATIONS 句型和搭配◆ineffective / inefficient / counterproductive for sb / sth◆ineffective / ineffectual as sth◆ineffective / inefficient in / at doing sth◆to be ineffective / inefficient / counterproductive / self-defeating to do sth◆largely ineffective / unproductive / ineffectual / self-defeating◆rather ineffective / inefficient / ineffectual◆relatively ineffective / inefficient / unproductive◆entirely ineffective / unproductive / counterproductive■ ineffective not achieving what you want it to achieve; not having any effect 无效果的；不起作用的；不奏效的◆It has been criticized as an unfair and ineffective system.这种体制被批不公、无效。◆The missiles are totally ineffective against tanks.这些导弹根本对付不了坦克。◆High interest rates proved to be ineffective in reducing inflation.事实证明高利率并未有效降低通货膨胀。OPP effective ⇨ successful 1 ▸ ineffectively

adverb

◆Why is this crime dealt with so ineffectively?对这起犯罪的处理为何如此不力？ OPP effectively ⇨ successful 1 ■ inefficient ˌɪnɪˈfɪʃnt not doing a job well and not making the best use of time, money, energy, etc. 效率低的；能力差的；浪费的◆The regime was both inefficient and corrupt.这个政权既无能又腐败。◆The boss thinks the new secretary is inefficient.老板认为新秘书不称职。◆This method of data storage is an inefficient use of memory.这种数据存储方法浪费内存。OPP efficient ⇨ efficient ▸ inefficiency

noun

 [uncountable, plural] ◆The measures encouraged inefficiency and waste.这些措施助长了低效率与浪费。◆inefficiencies in the system体制中的低效率现象 OPP efficiency ⇨ efficiency ▸ inefficiently

adverb

◆The firm was inefficiently run.该公司经营不善。 OPP efficiently ⇨ efficient ■ unproductive not producing or achieving very much; not producing good results 产能差的；效果不佳的；成效低的◆I've spent yet another unproductive day.我这一天又是什么事都没干成。◆We had a series of unproductive meetings.我们开的一连串会议都是事倍功半。OPP productive ⇨ productive ■ counterproductive [not usually before noun] having the opposite effect to the one intended 产生相反效果；事与愿违；适得其反◆Increases in taxation would be counterproductive.加税将会适得其反。◆It would be counterproductive to act hastily at this stage.在这个阶段仓促行事会得到反效果。■ ineffectual ˌɪnɪˈfektʃuəl (formal) (of a person) not achieving much; weak; (of an action) not achieving what you want it to achieve （人）无能的，软弱的；（行为）达不到目的的◆The president is seen as weak and ineffectual.总统被视为软弱无能。◆She made an ineffectual grab at the book.她去抓那本书，但没抓到。ⓘ Ineffectual is used especially when sb/sth does not achieve much because of weakness or lack of the necessary ability and is used especially about people and their attempts to do sth. * ineffectual尤用以表示人试图做某事，但因为虚弱或缺乏必要的能力而不成功。▸ ineffectually

adverb

◆He struggled ineffectually to get out from behind the wheel.他徒劳地挣扎着，想从方向盘后面爬出来。■ ˌself-deˈfeating causing more problems and difficulties instead of solving them; having the opposite effect to the one intended 弄巧成拙的；事与愿违的；适得其反的◆Paying children too much attention when they misbehave can be self-defeating.孩子有不良行为时，过度关注可能会适得其反。
BNC: 7076 COCA: 7869
ineffective
Not effective or useful and not working correctly: useless, ineffective, inefficient...
Not skilful or able: incompetent, incapable, awful...
Disadvantages: disadvantage, handicap, limitation...

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