1
be purportedly + past participle
用于被动结构，表示外界声称或传闻某事为真，但说话人不保证其真实性。
The manuscript was purportedly written by Shakespeare.
这份手稿据称是莎士比亚所写的。
据称；据说
先理解核心含义，再看它在真实句子里的用法。
据称；据说
supposedly; believed or reputed to be the case
The manuscript was purportedly written by Shakespeare.
这份手稿据称是莎士比亚所写的。
据称,看似真实(但可能并非如此)。
As appears to be true or is stated or accepted to be (though might not be so).
The painting was purportedly created by a famous artist, but experts doubt it.
这幅画据称出自一位著名画家之手，但专家们表示怀疑。
The document purportedly explains the company's secret strategy.
这份文件据称解释了公司的秘密战略。
He purportedly knew about the surprise party, yet he looked amazed.
他据称知道这个惊喜派对，但他看起来还是很惊讶。
用于被动结构，表示外界声称或传闻某事为真，但说话人不保证其真实性。
The manuscript was purportedly written by Shakespeare.
这份手稿据称是莎士比亚所写的。
修饰形容词时，常放在形容词前，表示“据称是……的”。
They stayed in a purportedly haunted hotel.
他们住在一家据称闹鬼的酒店里。
置于句首作评论性状语，对整句内容表示“据说”。
Purportedly, the deal was signed last week.
据称，这笔交易上周已经签署。
Not this
The purportedly leader of the gang was arrested.
Use this
The purported leader of the gang was arrested.
purportedly 是副词，不能作定语修饰名词 leader；表示“据称的”须用形容词 purported。
Not this
The witness purported saw the accident.
Use this
The witness purportedly saw the accident.
purported 是动词过去式，后面不能直接跟另一个动词 saw；修饰谓语动词 saw 要用副词 purportedly。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
据称被泄露的
The purportedly leaked documents were shared online.
这些据称被泄露的文件在网上被分享。
据称参与的
He was purportedly involved in the scheme.
据称他参与了这一计划。
据称基于
The film is purportedly based on a true story.
这部电影据称是根据真实故事改编的。
据称负有责任的
The group was purportedly responsible for the attack.
该组织据称对这起袭击负有责任。
据称来自
A letter purportedly from the CEO was circulated.
一封据称来自首席执行官的邮件被传阅。
Use purportedly naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
purport本身有“声称”之意，加上-ly变成副词“据称”：某人声称如此，但未必属实。
语域：formal 常见场景：新闻报道、法律文书、学术写作 该词多用于正式或书面语境，如新闻、法律或学术文本，表示“据称、据说”，通常带有未经证实的含义；日常口语中较少使用，更常说 supposedly。
以/pərˈpɔːrtɪdli/为例，重音落在-por-，与reportedly /rɪˈpɔːrtɪdli/完全押韵。allegedly /əˈlɛdʒɪdli/、supposedly /səˈpoʊzɪdli/、undoubtedly /ʌnˈdaʊtɪdli/、markedly /ˈmɑːrkɪdli/、admittedly /ədˈmɪtɪdli/拼写都以-edly结尾，但重读元音不同，并不押韵。注意-edly通常读/ɪdli/，但其前的元音各不相同。
Dictionary facts from ECDICT, WIKTIONARY.