ineffective
ineffective — 形容詞
- ineffectivepositive
- more ineffectivecomparative
- most ineffectivesuperlative
1. Something that is ineffective fails to achieve what it was supposed to do — for
無效的
未達預期效果的
Something that is ineffective fails to achieve what it was supposed to do — for example, a medicine, method, or system that does not work as expected.
Amihan tried three different cleaners, but each one proved ineffective on the kitchen stain.
Amihan 試了三種不同的清潔劑，但每一種對於廚房污漬都沒有效果。
prove ineffective — used for methods or treatments
The old wooden lock on Zayd's garden gate was ineffective against the local foxes.
Zayd 花園大門上的舊木鎖擋不住當地的狐狸。
ineffective against [threat]
Henrik's strategy for reducing waste was ineffective and actually created more paperwork.
Henrik 的減廢策略沒有效果，反而製造了更多文書工作。
Despite strong public warnings, the campaign to stop smoking remained largely ineffective.
儘管政府強力宣導，禁菸運動在很大程度上仍然成效不彰。
collocation: largely ineffective / remain ineffective
- ineffective treatment
- ineffective policy
- ineffective strategy
- prove ineffective
- largely ineffective
- ineffective against
- useless
stronger, more informal; suggests something cannot be used at all
- futile
formal; stresses that effort is completely wasted, not just lacking effect
- unsuccessful
broader; can apply to a person, plan, or attempt that did not achieve its goal
- unproductive
often used for meetings, discussions, or work periods that yield no useful result
- effective
the direct opposite — producing the intended result
- successful
achieving a desired outcome
文法句型
ineffective at [noun/phrase]
ineffective against [noun]
prove ineffective
用法筆記
Subject is usually a thing — a method, treatment, tool, policy, or system. When describing a person, sense 2 is the correct choice.
常見錯誤
2. An ineffective person does not have the skills, qualities, or authority needed t
無能的
缺乏所需能力的
An ineffective person does not have the skills, qualities, or authority needed to succeed in their role — for example, a manager whose team fails to meet targets, or a leader who cannot make clear decisions.
Felipe's supervisor was so ineffective that the team missed every monthly target.
Felipe 的主管非常無能，團隊每個月都無法達成目標。
ineffective supervisor — describing a person's performance in a role
Voters blamed ineffective leaders for the slow response to the housing crisis.
選民將住房危機應對緩慢歸咎於無能的領導者。
The hospital board removed Nia as director after years of ineffective management.
醫院董事會以多年管理不力為由，解除了 Nia 的主任職務。
collocation: ineffective management
Stefan proved ineffective as a project manager because he could not make clear decisions.
Stefan 擔任專案經理表現不佳，因為他無法做出明確的決策。
- ineffective manager
- ineffective leader
- ineffective director
- ineffective management
- prove ineffective as
- incompetent
stronger, more direct; implies a clear lack of necessary skill
- inadequate
suggests not meeting the required standard, often in a specific area
- incapable
strongest; means completely unable to do something
文法句型
prove ineffective as [role]
ineffective [role]
用法筆記
Frequently used before role nouns such as manager, leader, teacher, or director. For things (methods, tools, systems), use sense 1 instead.
常見錯誤
同根字
- effective形容詞B2
- effectively副詞B2
- ineffectively副詞B2
- effectiveness名詞B2
- ineffectiveness名詞C1
- effect名詞B1
- effect動詞B2
- efficacy名詞C1