1
a challenging [noun]
作定语，修饰名词。
The teacher gave us a challenging assignment.
老师给了我们一项具有挑战性的作业。
困难的；有挑战性的
先理解核心含义，再看它在真实句子里的用法。
困难的；有挑战性的
Difficult, hard to do.
The teacher gave us a challenging assignment.
老师给了我们一项具有挑战性的作业。
困难的,难以做到的
Difficult, hard to do.
The math exam was very challenging, but I managed to pass.
数学考试很有挑战性，但我还是设法通过了。
She finds her new job challenging because it requires her to learn many new skills.
她觉得新工作很有挑战性，因为需要学习很多新技能。
His challenging comments during the debate made everyone think more deeply.
他在辩论中挑衅性的评论让每个人更深地思考。
作定语，修饰名词。
The teacher gave us a challenging assignment.
老师给了我们一项具有挑战性的作业。
作表语，用于系动词后。
This puzzle is challenging.
这个谜题很有挑战性。
用于it作形式主语的句型。
It is challenging for beginners to learn this skill.
对初学者来说，学习这项技能很有挑战性。
Not this
I am challenging by this problem.
Use this
I am challenged by this problem.
'challenging' 是形容词，用于描述任务或情况本身具有挑战性；描述人感到被挑战时应用过去分词 'challenged'。
Not this
He challenging me to a game yesterday.
Use this
He challenged me to a game yesterday.
'challenging' 是形容词，不能用作动词。动词 'challenge' 的过去式应为 'challenged'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
具有挑战性的任务
Completing the project on time was a challenging task.
按时完成这个项目是一项具有挑战性的任务。
难题
The math competition presented a challenging problem.
数学竞赛出了一道难题。
有挑战性的工作
She is looking for a challenging job in software development.
她正在寻找一份软件开发方面的有挑战性的工作。
棘手的情况
He remained calm in the challenging situation.
他在棘手的情况下保持冷静。
难度大的考试
Students found the final exam very challenging.
学生们觉得期末考试难度很大。
非常具有挑战性
The hiking trail was very challenging for beginners.
这条徒步路线对初学者来说非常具有挑战性。
Use challenging naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
challenging = challenge（挑战）+ ing，联想“正在挑战”，表示“具有挑战性的”。
语域：neutral 常见场景：工作、学习、任务、问题 通常用于描述需要付出较大努力或能激发思考的事物，常见于职场、学术及日常讨论中。
主要用于名词前作定语或系动词后作表语；可后接不定式或介词短语；常用于‘find it challenging to do’结构。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.