1
it is unnatural (for sb) to do sth
表示某事违反常理或天性。
It is unnatural for a mother to abandon her child.
母亲抛弃自己的孩子是不自然的。
不自然的；反常的；不近人情的
先理解核心含义，再看它在真实句子里的用法。
不自然的；反常的；不近人情的
not natural; not in accordance with or determined by nature; contrary to nature
It is unnatural for a mother to abandon her child.
母亲抛弃自己的孩子是不自然的。
非自然的
Not natural.
不符合自然的；违背自然的
not in accordance with or determined by nature; contrary to nature
自然、环境或大气中不存在的
Not occurring in nature, the environment or atmosphere
不正常的；非典型的或不符合常规的
not normal; not typical or usual or regular or conforming to a norm
It felt unnatural to smile at someone I had just met.
对刚认识的人微笑让我觉得不自然。
AI contextual example
The robot's movements looked unnatural, as if its joints were stiff.
那个机器人的动作看起来很不自然，好像关节很僵硬。
AI contextual example
The bright green grass in the desert seemed unnatural to the travelers.
沙漠里鲜艳的绿草在旅行者看来显得反常。
AI contextual example
an unnatural death
非正常死亡。
WordNet
表示某事违反常理或天性。
It is unnatural for a mother to abandon her child.
母亲抛弃自己的孩子是不自然的。
表达主观感受，认为某人或某事物不自然。
I found his laughter unnatural and forced.
我觉得他的笑声不自然且勉强。
描述看起来或感觉上不自然。
The silence after the argument seemed unnatural.
争吵后的沉默显得很不自然。
Not this
He speaks unnatural.
Use this
He speaks unnaturally.
英语中修饰动词需使用副词unnaturally，而不是形容词unnatural。中文常将“不自然”直接用作状语，导致词性错误。
Not this
It is unnatural to him to smile.
Use this
It is unnatural for him to smile.
表达“对某人而言不自然”应使用介词for，而不是to，因为unnatural用于it is unnatural for sb to do结构。中文直译“对他不自然”导致介词误用。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
非自然原因
The police determined that he died of unnatural causes.
警方确定他死于非自然原因。
非正常死亡
An investigation was opened into the unnatural death of the young woman.
对那名年轻女子的非正常死亡展开了调查。
反常行为
Her unnatural behavior at the party made everyone uncomfortable.
她在派对上的反常行为让所有人都不舒服。
不自然的沉默
There was an unnatural silence in the room after his announcement.
他宣布之后，房间里出现了一种不自然的沉默。
不自然的颜色
The fruit had an unnatural color, as if it had been dyed.
那水果有不自然的颜色，好像被染过一样。
别扭的姿势
He slept in an unnatural position and woke up with a sore neck.
他用别扭的姿势睡觉，醒来时脖子酸痛。
Use unnatural naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆：un-（不）+ natural（自然）= 不自然；想想一个人强装笑脸，表情很“做作”的样子。
语域：neutral 常见场景：文学批评、日常评价、道德讨论 该词在多数情况下为中性，但具体语境略有侧重：用于自然现象时偏正式，用于行为评价时泛指不正常，用于道德谴责时语气较重。通常根据上下文判断，无明显口语或书面语倾向。
Only words ending in '-natural' (natural, supernatural) rhyme with unnatural (same stressed vowel /æ/). Words like cultural, structural, agricultural, and architectural share the '-tural' spelling but have different stressed vowels (/ʌ/ or /ɛ/), so they do not rhyme.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.