verb + mournfully
方式副词通常放在动词后；动词带宾语时，通常放在宾语之后。
She wept mournfully at the funeral.
她在葬礼上悲哀地哭泣。
悲哀地；忧伤地
悲伤地；哀悼地；凄惨地
in a mournful manner
悲伤地；哀悼地
In a mournful manner; as if in mourning for something.
She looked at the old photograph mournfully, remembering her childhood dog.
她悲哀地看着那张旧照片，想起了她童年的狗。
用法提示：副词 mournfully 修饰动词 looked，表示“悲哀地”。
The wind howled mournfully through the empty house at night.
夜里，风在空房子里凄惨地呼啸。
用法提示：副词 mournfully 修饰动词 howled，意为“凄惨地”。
He shook his head mournfully when he heard the bad news.
听到这个坏消息时，他悲哀地摇了摇头。
用法提示：副词 mournfully 修饰动词短语 shook his head，表示动作带着忧伤。
方式副词通常放在动词后；动词带宾语时，通常放在宾语之后。
She wept mournfully at the funeral.
她在葬礼上悲哀地哭泣。
He played the tune mournfully.
他悲哀地演奏了那支曲子。
最常用的中性副词，表示悲伤或遗憾；语气比 mournfully 弱，也常作“不幸地”解（如 sadly, he failed）。
语气较强，较正式，侧重内心深切的悲痛，常用于失去亲友等场合。
强调外表或态度上的沮丧、阴郁，常有“无精打采”的色彩。
多指声音、话语带有哀怨或恳求，暗示不满或渴望，如低声诉说时。
grammar · medium
易错句子He looked at the photo mournful.
正确表达He looked at the photo mournfully.
修饰动词 looked 应用副词 mournfully；形容词 mournful 只能修饰名词，而英语中修饰动作需用 -ly 副词。
grammar · medium
易错句子She felt mournfully after the funeral.
正确表达She felt mournful after the funeral.
felt 是系动词，后面应接形容词作表语，说明主语的状态；副词 mournfully 不能修饰系动词，只能修饰动作动词。
与“悲哀地/忧伤地”相反，表示充满喜悦。
常见反义，强调心情愉快。
强调神色开朗、态度积极。
带有轻松欢快的气氛。
强调因满足或得意而欣喜。
sadly 泛指因悲伤或遗憾而表现出的情绪，语气较宽泛，也可放在句首表示“不幸的是”；mournfully 则强调如哀悼、恸哭般流露的悲痛，带有深沉而外显的哀伤。
sorrowfully 多指因具体的失败、损失或不幸而内心沉痛，较书面、正式；mournfully 更侧重于悼念逝者或哀叹时的外在悲容、悲声，比 sorrowfully 更具哀悼色彩。
mournful 是形容词，用以修饰名词，表示事物或神情悲哀；mournfully 是副词，修饰动词，表示“以悲哀的方式做某事”，二者词性不同，不能互换。
悲哀地说
She said mournfully that she would miss the old house.
她悲哀地说她会想念那座老房子。
悲哀地看着
He looked mournfully at the empty chair.
他悲哀地看着空椅子。
悲哀地叹气
The old man sighed mournfully and turned away.
老人悲哀地叹了口气，转过身去。
忧伤地凝视
She gazed mournfully out the window at the rain.
她忧伤地凝视着窗外的雨。
凄厉地嚎叫
The dog howled mournfully all night.
那只狗整夜凄厉地嚎叫。
悲哀地摇头
The doctor shook his head mournfully.
医生悲哀地摇了摇头。
scornful + ly
beautiful + ly
wonderful + ly
hopeful + ly
mourn (哀悼) + -ful (形容词后缀) + -ly (副词后缀)；同根词：mournful, mourner, mourning
Dictionary facts from ECDICT, WIKTIONARY.