1
hitherto + present perfect
常用于完成时态，表示从过去到现在的持续状态。
The problem has hitherto been ignored.
这个问题迄今一直未受重视。
迄今；至今
先理解核心含义，再看它在真实句子里的用法。
迄今；至今
up to this time; until now
The problem has hitherto been ignored.
这个问题迄今一直未受重视。
用于否定句中,描述迄今为止一直存在的某种情况
used in negative statement to describe a situation that has existed up to this point or up to the present time
The origins of the ancient manuscript have hitherto remained a mystery.
这份古代手稿的起源至今仍然是个谜。
Hitherto, the company has focused solely on domestic markets.
迄今为止，该公司只专注于国内市场。
The cause of the disease has hitherto been unknown to scientists.
这种疾病的病因至今仍不为科学家所知。
常用于完成时态，表示从过去到现在的持续状态。
The problem has hitherto been ignored.
这个问题迄今一直未受重视。
This is a hitherto unknown species.
这是一种迄今未知的物种。
置于句首作状语，常用逗号隔开。
Hitherto, the government has maintained silence.
迄今，政府一直保持沉默。
Not this
The hitherto manager resigned last week.
Use this
The previous manager resigned last week.
「hitherto」是副词，意为‘迄今，至今’，不能直接用作形容词修饰名词表示‘之前的’。应改用形容词 'previous' 或重新组织句子。
Not this
She lived in Beijing hitherto.
Use this
She has lived in Beijing hitherto.
「hitherto」表示‘到目前为止’，通常与现在完成时连用，强调从过去持续到现在的状态。使用一般过去时无法体现‘至今’的含义。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
迄今未知的
The disease was hitherto unknown in this region.
这种疾病迄今为止在该地区是未知的。
前所未见的
The telescope revealed hitherto unseen details of the galaxy.
望远镜揭示了该星系前所未有的细节。
迄今未被怀疑的
The investigation uncovered a hitherto unsuspected fraud.
调查揭露了一个迄今未被怀疑的欺诈行为。
迄今被认为的
This method is more efficient than hitherto considered possible.
这种方法比迄今被认为可能的更高效。
迄今存在的
The new policy supersedes all hitherto existing regulations.
新政策取代了所有迄今存在的法规。
迄今持有的
This discovery challenges hitherto held beliefs about human evolution.
这一发现挑战了关于人类进化的迄今持有的信念。
Use hitherto naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
拆解记忆：hither（这里）+to（到）= 直到这里，意为至今。
正式用词，多用于书面语、学术或法律语境，表示“迄今”。在口语中极少使用。
All four words share the rhyming ending /tuː/ with 'hitherto', but note that 'into' and 'onto' are often reduced to /ˈɪntə/ and /ˈɒntə/ in rapid speech. 'Thereto' and 'hereto' are formal adverbs.
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.