unpleasantly + adjective
该结构用于形容词前，强调该形容词描述的特性令人不适。
The soup was unpleasantly salty.
汤咸得令人不舒服。
令人不愉快地；不讨人喜欢地
不愉快地；令人不快地
不愉快地；令人不快地
In an unpleasant manner.
The coffee tasted unpleasantly bitter.
这咖啡苦得令人不快。
用法提示：unpleasantly 修饰形容词 bitter，表示苦的程度令人不愉快。
She reacted unpleasantly to the news.
她对这个消息的反应令人不快。
用法提示：unpleasantly 修饰动词 reacted，表示反应的方式令人不悦。
The weather turned unpleasantly cold in the evening.
傍晚天气变得冷得让人难受。
用法提示：unpleasantly 修饰形容词 cold，强调寒冷令人不适。
该结构用于形容词前，强调该形容词描述的特性令人不适。
The soup was unpleasantly salty.
汤咸得令人不舒服。
动词后使用 unpleasantly 表示动作以令人不悦的方式进行。
She laughed unpleasantly at the joke.
她对这个笑话笑得令人不快。
与 unpleasantly 最接近，常修饰形容词（如 disagreeably cold），语气稍正式。
侧重言语或行为上的恶意，不用于描述天气、气味等客观感受。
只指待人接物时不礼貌，不能泛泛地表示“令人不快”。
程度较强，多用于言行、气味等让人明显反感或受冒犯的场合。
强调令人厌烦，常含张扬、过分或打扰他人的意味。
grammar · medium
易错句子The coffee was unpleasant hot.
正确表达The coffee was unpleasantly hot.
unpleasantly 是副词，修饰形容词 hot；unpleasant 是形容词，不能修饰形容词。
grammar · medium
易错句子He is an unpleasantly person.
正确表达He is an unpleasant person.
unpleasantly 是副词，不能修饰名词 person；修饰名词要用形容词 unpleasant。
grammar · medium
易错句子She looked unpleasantly.
正确表达She looked unpleasant.
looked 是系动词，后面接形容词作表语，不接副词；unpleasantly 是副词，应改为形容词 unpleasant。
针对“令人不愉快地”这一义项，反义词为 pleasantly（令人愉快地）。unpleasantly 也可表示“不讨人喜欢地”，此时 pleasantly 仍是常用反义表达，但语气较泛；不要使用机械否定形式 not unpleasantly。
unpleasantly 是副词，修饰动作、方式或状态；unpleasant 是形容词，修饰名词或作表语。要判断被修饰词是动词还是名词，不能只看中文里的“不愉快”。
二者都是 -ly 副词且拼写只差 un- 前缀，但意义相反：unpleasantly 是“以令人不快的方式”，pleasantly 是“以令人愉快的方式”。注意否定前缀不要遗漏或误加。
unpleasantly 侧重“令人反感、讨厌”（如味道、态度、言语）；uncomfortably 侧重“身体不适或心理难堪”（如座位太硬、气氛尴尬）。要根据原因是厌恶还是不适来选词。
感到不快的惊讶；意外而不悦
She was unpleasantly surprised to find the store closed.
发现商店关门了，她惊讶之余很不愉快。
热得令人不舒服
The room grew unpleasantly hot by noon.
到了中午，房间变得热得让人难受。
冷得令人难受
The water in the stream was unpleasantly cold.
小溪里的水冷得让人难受。
熟悉得令人不安
His tone of voice was unpleasantly familiar.
他的语气熟悉得让人不安。
潮湿得令人不适
The city is unpleasantly humid in August.
这座城市八月份潮湿得令人不适。
强烈得令人不适
The smell was unpleasantly strong.
那股气味浓烈得让人不舒服。
pleasant + -ly
present + -ly
constant + -ly
instant + -ly
un-（不）+ pleasant（令人愉快的）+ -ly（副词后缀）；同前缀词：unhappy、unable；同后缀词：quickly、slowly；同根词：unpleasant、pleasantly
常与 unpleasant 搭配，表示令人不适的声音，如 unpleasantly loud noise。
常与 unpleasant 连用，指难闻的气味，unpleasantly 修饰其强度或特征。
描述令人不快的味觉体验，如 unpleasantly bitter taste。
天气状况常被评价为 unpleasant，如 unpleasantly cold weather。
unpleasantly surprised 表示因意外消息或情况而感到不快。
Dictionary facts from ECDICT, WIKTIONARY.