undermined
用法要点
句型搭配
常用于被动语态或完成时态，表示某事物已被破坏。句型如：be undermined by sth（被某事物破坏），have undermined sth（已经破坏了某事物）。
介词用法
常与 by 连用，表示破坏的原因或方式；也可与 through 或 over time 搭配，强调过程。
语域说明
多用于正式或书面语境，如政治、学术、商务报告，表示对稳定性或可信度的损害。日常对话中较少使用，但可用于描述人际关系或信任问题。
基础例句
His confidence was undermined by constant criticism from his boss.
老板不断的批评削弱了他的自信心。
The heavy rains have undermined the foundation of the old house.
大雨已经破坏了这座老房子的地基。
Her trust in him was completely undermined after he lied again.
在他再次撒谎后，她对他的信任被彻底破坏了。
The team's morale was undermined by the unfair treatment.
不公平的待遇削弱了团队的士气。
高级例句
The economic policies have seriously undermined the country's financial stability over the past decade.
过去十年里，经济政策严重削弱了该国的金融稳定性。
In academic circles, the credibility of the research was undermined by methodological flaws.
在学术界，这项研究的可信度因方法上的缺陷而受到破坏。
The company's reputation was fatally undermined by the data breach scandal.
数据泄露丑闻致命地破坏了公司的声誉。
International agreements can be undermined if member states fail to comply with the terms.
如果成员国不遵守条款，国际协议可能会被破坏。
高频搭配
verb
adjective
noun
adverb
preposition
phrase
常见错误
错误：误用 undermine 后接不定式 to do。正确：undermine 是及物动词，后直接接名词或名词短语，表示破坏的对象。应改为 undermine + 名词结构。
错误：在 by 后用动词原形 eat。正确：by 是介词，后应接动名词 eating 表示方式。这是中文学习者常犯的介词搭配错误。
近义词辨析
weaken
weaken 泛指使变弱，程度较轻，可以是物理或抽象上的削弱；undermined 强调暗中或逐渐破坏，常导致根本性损害，多用于抽象事物如信任、权威。
The illness weakened his body (身体变弱), but the scandal undermined his authority (权威被暗中破坏).
sabotage
sabotage 指故意破坏，通常是有预谋的行动；undermined 可以是无意或间接的破坏，更强调渐进性和隐蔽性。
He sabotaged the machine (故意破坏机器), while poor management undermined the company's growth (管理不善逐渐破坏了公司增长).