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feebly + verb
feebly 放在动词前，强调动作的微弱或缺乏力量。
She feebly protested the decision.
她无力地抗议这个决定。
柔弱地；无力地；微弱地
先理解核心含义，再看它在真实句子里的用法。
柔弱地；无力地；微弱地
in a faint, weak, or halting manner
She feebly protested the decision.
她无力地抗议这个决定。
虚弱地
In a feeble manner.
The old man feebly raised his hand to wave goodbye.
老人无力地举起手挥手告别。
She feebly tried to open the heavy door.
她微弱地试着打开那扇沉重的门。
The light flickered feebly in the dark room.
灯光在黑暗的房间里微弱地闪烁。
feebly 放在动词前，强调动作的微弱或缺乏力量。
She feebly protested the decision.
她无力地抗议这个决定。
放在动词后同样表示动作无力，语气较为正式。
He tried feebly to defend himself.
他软弱无力地试图为自己辩护。
feebly 也可修饰过去分词，表示程度微弱，如 feebly lit。
The room was feebly lit by a single candle.
房间被一根蜡烛微弱地照亮。
Not this
She protested feeble.
Use this
She protested feebly.
protest 是实义动词，需要用副词修饰；feeble 是形容词，只能修饰名词或作表语，不能修饰动词。
Not this
After the long walk, I felt feebly.
Use this
After the long walk, I felt feeble.
feel 作系动词时，后面应接形容词描述主语状态，不接副词；feebly 是副词，不能作 feel 的表语。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
无力地抗议
He protested feebly when they took his plate.
当他们拿走他的盘子时，他无力地抗议。
无力地微笑
She smiled feebly at the doctor.
她朝医生无力地笑了笑。
无力地挣扎
The injured bird struggled feebly to escape.
受伤的小鸟无力地挣扎着想要逃走。
微弱地闪烁
The candle flickered feebly in the draft.
蜡烛在风中微弱地闪烁。
无力地抱怨
He complained feebly about the noise but did nothing.
他无力地抱怨噪音，但没有采取任何行动。
Use feebly naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
feeble（虚弱的）加 -ly，像生病的小猫软绵绵地挪步，毫无力气。
语域：mixed 常见场景：书面叙述或新闻报道、描述动作或声音 feebly 多用于书面或正式描述，表示“柔弱地、无力地”；日常口语中更常说 weakly。
These words share spelling patterns or sounds with 'feebly' (/ˈfiːbli/), but none is an exact rhyme. 'feeble' shares the base spelling and the opening /ˈfiːb/ sound but is an adjective. 'probably', 'terribly', and 'wobbly' end in the letters -bly and the sound /bli/, yet their stressed vowels differ from /iː/, so they do not rhyme. 'weakly' and 'deeply' have the same stressed vowel /iː/ but different following consonants. An exact rhyme would need the pattern /iːbli/, which no common English word has.
Dictionary facts from ECDICT, WIKTIONARY.