1
effortful + noun
effortful 常用于修饰表示任务或活动的名词。
She completed the effortful task.
她完成了这项需要付出巨大努力的任务。
费力的；费劲的
先理解核心含义，再看它在真实句子里的用法。
费力的；费劲的
Requiring or showing effort.
She completed the effortful task.
她完成了这项需要付出巨大努力的任务。
需要努力的；表现出努力的。
Requiring or showing effort.
The trail to the summit was steep and rocky, making the hike extremely effortful.
通往山顶的小路陡峭多石，使得这次徒步旅行极其费力。
He let out a grunt as he made the effortful lift of the heavy box onto the shelf.
他发出咕哝声，费力地把沉重的箱子抬到架子上。
The physical therapist recommended several effortful exercises to strengthen the patient's muscles.
物理治疗师推荐了几项需要付出很大努力的练习来增强病人的肌肉。
effortful 常用于修饰表示任务或活动的名词。
She completed the effortful task.
她完成了这项需要付出巨大努力的任务。
作表语时描述主语需要努力。
The training is effortful but rewarding.
训练很费力但值得。
后接 for 引出涉及的对象。
This puzzle is too effortful for children.
这个谜题对孩子们来说太费力了。
Not this
He completed the project effortful.
Use this
He completed the project effortfully.
effortful是形容词，不能直接修饰动词；需改为副词形式effortfully。
Not this
This task is effortful, I finished it quickly.
Use this
This task is effortless, I finished it quickly.
effortful意为'需要努力的'，与句意'快速完成'矛盾；应改用effortless表示'不费力的'。
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Dictionary facts from ECDICT, WIKTIONARY.