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tenaciously + verb
副词置于动词前，常用来突出动作中的坚定态度。
The team tenaciously pursued the championship.
这支队伍顽强地争取冠军。
顽强地；固执地；坚定地
先理解核心含义，再看它在真实句子里的用法。
顽强地；固执地；坚定地
with obstinate determination
The team tenaciously pursued the championship.
这支队伍顽强地争取冠军。
顽强地,坚韧地
In a tenacious manner.
Despite the pain, she tenaciously continued to train for the marathon.
尽管疼痛，她仍顽强地继续为马拉松训练。
The small company tenaciously fought against the larger competitors.
这家小公司顽强地对抗更大的竞争对手。
He tenaciously defended his opinion during the meeting.
他在会议期间顽强地捍卫自己的观点。
副词置于动词前，常用来突出动作中的坚定态度。
The team tenaciously pursued the championship.
这支队伍顽强地争取冠军。
副词也可放在动词后，适用于不及物动词或后接介词短语的情况。
She fought tenaciously against the disease.
她顽强地与疾病作斗争。
被动结构中，tenaciously 修饰过去分词，强调某种状态或做法被坚定地维持。
The policy was tenaciously defended by its supporters.
这项政策被其支持者顽强地捍卫着。
Not this
She fought tenacious.
Use this
She fought tenaciously.
fought 是动词，需要副词来修饰；tenacious 是形容词，不能修饰动词，应改为副词 tenaciously，意为“顽强地”。
Not this
He stuck tenaciously his beliefs.
Use this
He stuck tenaciously to his beliefs.
stick to 是固定搭配，意为“坚持”，介词 to 不能省略；tenaciously 作状语修饰 stuck，因此应保留 to。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
顽强地坚持；紧抓不放
The climber held on tenaciously to the rocky ledge.
那位攀岩者顽强地抓住岩壁边缘。
牢牢抓住；固执地坚持
The child clung tenaciously to his mother's hand.
孩子紧紧抓住妈妈的手不放。
顽强地战斗
The soldiers fought tenaciously despite being outnumbered.
尽管寡不敌众，士兵们仍然顽强战斗。
坚持不懈地追求
She pursued her dream of becoming a doctor tenaciously.
她坚持不懈地追求成为医生的梦想。
坚决捍卫
He tenaciously defended his research against criticism.
他坚决捍卫自己的研究，反驳批评。
Use tenaciously naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想 ten（十）条触手都抓紧不放，tenaciously 就是顽强地坚持。
语域：neutral 常见场景：书面写作、正式演讲、日常对话 tenaciously 整体属中性偏正式，多用于书面或较严肃的说话场合；日常口语中也能听到，但语气通常带有认真、坚定的色彩。
These words share the -ciously ending. Graciously, audaciously, sagaciously, vivaciously, and fallaciously rhyme with tenaciously (/təˈneɪʃəsli/): each has the stressed /eɪ/ vowel directly before /ʃəsli/. Maliciously also ends in -ciously but has a different stressed vowel (/ɪ/), so it looks similar but does not rhyme.
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.