1
a compulsive
此时 compulsive 是名词，指有强迫倾向的人，可数，前面可加冠词。
The therapist spoke with a compulsive who had sought help.
治疗师与一位寻求帮助的有强迫倾向的人进行了交谈。
有强迫倾向的人；有强迫行为的人
先理解核心含义，再看它在真实句子里的用法。
有强迫倾向的人；有强迫行为的人
a person who has a compulsive disposition or exhibits compulsive behaviours
The therapist spoke with a compulsive who had sought help.
治疗师与一位寻求帮助的有强迫倾向的人进行了交谈。
表现出强迫行为的人。
One who exhibits compulsive behaviours.
有强迫倾向的人；感到不得不做某些事情的人
a person with a compulsive disposition; someone who feels compelled to do certain things
The therapist explained that a compulsive often struggles with repetitive behaviors.
治疗师解释说，强迫症患者通常难以控制重复行为。
As a compulsive, she felt an irresistible urge to check the locks three times before leaving.
作为一个强迫症患者，她离开前总有一种无法抗拒的冲动去检查门锁三次。
Support groups can help compulsives understand and manage their urges.
支持小组可以帮助强迫症患者理解并管理他们的冲动。
此时 compulsive 是名词，指有强迫倾向的人，可数，前面可加冠词。
The therapist spoke with a compulsive who had sought help.
治疗师与一位寻求帮助的有强迫倾向的人进行了交谈。
复数形式直接加 -s，用来指称多个人或一个群体。
Some compulsives are aware that their behavior is irrational.
一些有强迫倾向的人意识到自己的行为是不理性的。
Not this
He is a compulsion who cannot stop checking the locks.
Use this
He is a compulsive who cannot stop checking the locks.
compulsion 指‘冲动’或‘强迫行为’，不能指人；指人时应使用名词 compulsive（复数 compulsives）。改为 compulsive 后，句子主语 he 被明确为‘有强迫倾向的人’。
Not this
Many compulsive in the group need professional help.
Use this
Many compulsives in the group need professional help.
compulsive 作名词时是可数名词，指‘有强迫倾向的人’，复数形式为 compulsives。many 后接可数名词复数，所以必须用 compulsives，而非单数 compulsive。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
Use compulsive naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想 pulse（冲动/脉搏）：内心像被脉冲推着走、停不下来的人，就是 compulsive（有强迫倾向的人）。
语域：formal 常见场景：心理学与精神病学语境、学术或临床讨论 作名词时通常比形容词用法少见，多用于心理学、精神病学或学术讨论中，指有强迫倾向的人。日常口语中用形容词结构更自然，如 a compulsive shopper。
指有强迫性冲动的人
Dictionary facts from ECDICT, WIKTIONARY.