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be possessive about sth/sb
后接介词 about，表示对某人或某物有强烈的占有欲。
She is very possessive about her phone.
她对自己的手机占有欲很强。
所有格的
先理解核心含义，再看它在真实句子里的用法。
所有格的
serving to express or indicate possession
She is very possessive about her phone.
她对自己的手机占有欲很强。
语法用语，如 possessive pronoun（物主代词）
Of or pertaining to ownership or possession.
Indicating ownership, possession, origin, etc.
Unwilling to yield possession of.
My cat is very possessive of its toys and hides them from other cats.
我的猫对自己的玩具占有欲很强，会把它们藏起来不让别的猫碰。
She felt possessive about her new phone and didn't want to share it with anyone.
她对她的新手机很有占有欲，不想和任何人分享。
His possessive attitude made his friends feel uncomfortable.
他那充满占有欲的态度让朋友们感到不舒服。
后接介词 about，表示对某人或某物有强烈的占有欲。
She is very possessive about her phone.
她对自己的手机占有欲很强。
表示“所有格的”时，多作定语放在名词前，如 possessive pronoun（所有格代词）、possessive case（所有格）。
In 'my book', 'my' is a possessive determiner.
在“my book”中，my 是一个所有格限定词。
become 作系动词，后接形容词作表语，表示“变得有占有欲”。
After they started dating, he became possessive and controlling.
他们开始约会后，他变得占有欲强、控制欲强。
Not this
He is possessive to his girlfriend.
Use this
He is possessive of his girlfriend.
表示“对某人有占有欲”时，possessive 后接介词 of，不接 to；这是受中文“对……”直译的影响。
Not this
He is possessiver than his brother.
Use this
He is more possessive than his brother.
possessive 是多音节形容词，比较级须用 more possessive，而不是在词尾加 -er；多音节形容词不适用 -er 规则。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
物主代词
In 'This seat is mine', 'mine' is a possessive pronoun.
在“This seat is mine”中，“mine”是物主代词。
物主形容词
In 'her coat', 'her' is a possessive adjective.
在“her coat”中，“her”是物主形容词。
所有格
The possessive case of 'cat' is 'cat's'.
“cat”的所有格是“cat's”。
对……有占有欲
He is very possessive about his private belongings.
他对自己的私人物品占有欲很强。
占有欲强的男朋友
Her possessive boyfriend reads all her messages.
她占有欲强的男朋友会看她所有的信息。
占有欲强的行为
His possessive behavior made her feel trapped.
他占有欲强的行为让她感到被束缚。
我是个占有欲强的人。我不喜欢失去东西。
I'm a possessive man. I don't like to lose things.
我是个占有欲强的人。我不喜欢失去东西。
我不是一个占有欲强的人。
I am not a possessive man.
我不是一个占有欲强的人。
Use possessive naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象“possess（占有）＋ ive”，像紧抱玩具说‘我的！’的人，就是有占有欲的。
语域：mixed 常见场景：语法讲解、人际关系讨论、心理或行为描写 作形容词时，possessive 主要有两类用法：一是指语法上的“所有格的”，二是指人“占有欲强的”或“控制欲强的”。该词通常为中性，具体正式程度视语境而定；“占有欲强”的含义多用于人际关系或心理描写，语法含义则多见于教学或语言学讨论。
仅收录形容词用法；不要加入名词义项。
Dictionary facts from ECDICT, WIKTIONARY.