grammarmedium
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There are myriad of reasons to learn English.
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There are a myriad of reasons to learn English.
myriad 作可数名词表示‘大量’时，单数形式前面需要不定冠词 a，构成 a myriad of。原句缺少冠词，所以要在 myriad 前加 a。
无数；大量
myriads — plural of myriad
先理解核心含义，再看它在真实句子里的用法。
无数；大量
a countless or extremely large number
She faced a myriad of problems when starting her new business.
她在创业时面临大量的问题。
无数或大量(特定事物)。
A countless number or multitude (of specified things)
大量不确定的数字
a large indefinite number
十与一千的乘积
the cardinal number that is the product of ten and one thousand
The night sky was filled with a myriad of stars.
夜空布满了无数的星星。
AI contextual example
There are myriads of opportunities in the tech industry.
科技行业有数不清的机会。
AI contextual example
he faced a myriad of details
他面对无数细节。
WordNet
Not this
There are myriad of reasons to learn English.
Use this
There are a myriad of reasons to learn English.
myriad 作可数名词表示‘大量’时，单数形式前面需要不定冠词 a，构成 a myriad of。原句缺少冠词，所以要在 myriad 前加 a。
Not this
He faced myriads challenges.
Use this
He faced myriads of challenges.
myriads 是 myriad 的复数形式，作名词时后面接 of 才能带出所指的事物；myriads challenges 缺少 of，不符合名词用法。
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无数的；大量的
The project failed for a myriad of reasons.
这个项目因无数原因而失败。
Use myriads naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆联想：看到 myriad 就想到满天繁星，星星无数颗，所以 myriad 是“无数、大量”。
语域：mixed 常见场景：新闻报道、学术写作 这个名词用法的正式程度变化较大：用于 a myriad of 这类常见搭配时，在一般书面语和口语中均可能出现；若单独使用或用于文学性描述，则显得比较正式。建议根据具体搭配和场合选择。
常以单数形式出现，但也可用复数，后常接of短语
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY, WORDNET.