1
v. + unsuccessfully
直接置于动词后，说明动作的结果不成功。
They argued unsuccessfully against the proposal.
他们反对该提议，但未能成功。
无用；失败地
先理解核心含义，再看它在真实句子里的用法。
无用；失败地
without success
They argued unsuccessfully against the proposal.
他们反对该提议，但未能成功。
不成功；无效
Not successfully; without success; to no avail.
He tried unsuccessfully to open the jar.
他试图打开罐子，但没有成功。
She applied for the job unsuccessfully three times.
她申请了这份工作三次，都没有成功。
The team unsuccessfully attempted to break the record.
该团队试图打破纪录，但没有成功。
直接置于动词后，说明动作的结果不成功。
They argued unsuccessfully against the proposal.
他们反对该提议，但未能成功。
置于动词前，强调动作的方式或结果。
She unsuccessfully attempted to reach him by phone.
她试图通过电话联系他，但未成功。
用于完成时，表示过去的不成功经历。
I have unsuccessfully applied for the job several times.
我多次申请这份工作，但都未成功。
Not this
He tried unsuccessful.
Use this
He tried unsuccessfully.
形容词 'unsuccessful' 不能修饰动词，应使用副词 'unsuccessfully'。
Not this
He was unsuccessfully.
Use this
He was unsuccessful.
系动词后需用形容词，而不是副词 'unsuccessfully'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
尝试失败
He tried unsuccessfully to open the door.
他尝试开门，但没成功。
试图未果
She attempted unsuccessfully to contact the manager.
她试图联系经理，但没有成功。
争辩无效
They argued unsuccessfully against the proposal.
他们争辩反对该提案，但没有成功。
申请未获批准
He applied unsuccessfully for the scholarship.
他申请了奖学金，但没有成功。
寻求未果
The team sought unsuccessfully for a new sponsor.
团队寻找新赞助商，但未成功。
竞选失败
She ran unsuccessfully for city council.
她竞选市议会，但失败了。
Use unsuccessfully naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
拆解为un（不）+success（成功）+fully（地），联想为“不成功地”，即失败地。
语域：neutral 常见场景：写作、正式演讲、日常对话 通常为中性，在正式与非正式场合均可使用，比较常见于描述尝试或努力的结果。
All words share the spelling pattern '-fully'. However, only 'successfully' has the same stress pattern (third syllable) as 'unsuccessfully', so they rhyme. The others have primary stress on the first syllable and thus do not rhyme perfectly, though they share the same unstressed ending.
Dictionary facts from ECDICT, WIKTIONARY.