long ago
collocation很久以前
The story happened long ago.
这个故事发生在很久以前。
很久；长久
先理解核心含义，再看它在真实句子里的用法。
很久；长久
For a long time.
Have you been waiting long?
你等了很久了吗？
在空间上跨越很长的距离。
Over a great distance in space.
持续特定时长(由附加限定词说明)。
For a particular duration (specified by additional qualifying words accompanying it).
很长的时间(参见用法说明)。
A long time (see usage notes).
The line stretched long into the street.
队伍一直延伸到街上很远。
She can hold her breath longer than anyone I know.
她憋气的时间比我认识的任何人都长。
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Missing: Usage patterns
Complete this area with usage patterns.
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
很久以前
The story happened long ago.
这个故事发生在很久以前。
早已；很久以前
The problem has long since been solved.
这个问题早已解决了。
在…之前很久
He left long before the meeting ended.
他在会议结束前很久就离开了。
在…之后很久
She stayed long after the party was over.
聚会结束后她还在那里待了很久。
多久；多长时间
How long does it take to get there?
到那里要多久？
只要；和…一样久
You can stay as long as you like.
你想待多久就待多久。
很久以前
Long ago, people used candles for light.
很久以前，人们用蜡烛照明。
不久，很快
Before long, the sun came out.
不久，太阳出来了。
早已，很久以前
The old house has long since been demolished.
那座老房子早已被拆除。
生生不息，繁荣昌盛。
This is the famous Vulcan greeting from the Star Trek franchise, often accompanied by a hand salute. Here 'long' is used as an adverb meaning 'for a long duration'.
这是《星际迷航》系列中著名的瓦肯问候语，通常伴随一个手势。这里的 long 用作副词，意为“长久地”。
很久以前，四大部族和睦共处。
This is the opening narration of the animated series 'Avatar: The Last Airbender'. 'Long ago' is an adverbial phrase, and 'long' is an adverb meaning 'a long time before'.
这是动画剧集《降世神通：最后的气宗》的开场旁白。long ago 是副词短语，其中 long 是副词，表示“很久以前”。
Use long naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：一根橡皮筋拉得越长，持续的时间也越久——long 表示“长/久/远”。
语域：mixed 常见场景：questions and negatives、affirmative/literary statements 作为副词表示“很久、长时间”时，其语体并不固定：在疑问句和否定句（如 Have you been waiting long?）中最常见、偏中性；在肯定陈述句中多用于正式或书面语境，口语中更常说 for a long time。
常用于肯定句和疑问句，否定句中常用for a long time
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.