1
challenge sb to do sth
常用于比赛或对决。
She challenged him to a game of chess.
她向他挑战下棋。
受到挑战的；有缺陷的（委婉语）
先理解核心含义，再看它在真实句子里的用法。
受到挑战的；有缺陷的（委婉语）
having a disability or disadvantage (euphemistic)
She challenged him to a game of chess.
她向他挑战下棋。
受到挑战的
v take exception to；v issue a challenge to；v ask for identification；v raise a formal objection in a court of law
The scientist challenged the validity of the previous study.
科学家对先前研究的有效性提出了质疑。
The young boxer challenged the world champion to a title match.
这位年轻的拳击手向世界冠军发起了冠军赛挑战。
The defense lawyer challenged the admissibility of the evidence.
辩护律师对证据的可采性提出了反对。
常用于比赛或对决。
She challenged him to a game of chess.
她向他挑战下棋。
表示对某事的真实性或合法性提出质疑。
The lawyer challenged the evidence in court.
律师在法庭上质疑了证据。
多用于职位、头衔或奖牌的竞争。
Two candidates challenged the incumbent for the leadership.
两位候选人挑战现任者以争夺领导权。
Not this
The problem is very challenged.
Use this
The problem is very challenging.
用 'challenged' 描述事物时，表示'受到挑战的'，通常指人；描述事物应用 'challenging' 表示'有挑战性的'。这里主语是问题，所以用 'challenging'。
Not this
He is challenged with this task.
Use this
He is challenged by this task.
表示'被某事物挑战'时，介词常用 'by' 而非 'with'；'challenged by' 更自然地表达被动意义。
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Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from ECDICT, WIKTIONARY.