grammarmedium
Not this
He is batman.
Use this
He is a batman.
汉语中没有冠词，英语中可数名词单数前必须加限定词。batman 是可数名词，指“勤务兵”，所以要说 a batman，不能省略冠词。
勤务兵
batmans — plural of batman
先理解核心含义，再看它在真实句子里的用法。
勤务兵
batman
The batman cleaned the officer's uniform and polished his boots.
勤务兵清洗了军官的制服并擦亮了靴子。
军官的勤务兵或贴身男仆。
A servant or valet to a military officer.
1931年确立的重量单位,等于10公斤。
A unit of weight established in 1931 equal to 10 kg.
北美东部的一种蛾(Coelostathma discopunctana)。
Coelostathma discopunctana, a moth of Eastern North America.
As a young soldier, he served as a batman to a major.
作为一名年轻士兵，他给一名少校当勤务兵。
The colonel's batmen prepared the officers' quarters for inspection.
上校的勤务兵们为检查准备了军官们的营房。
Not this
He is batman.
Use this
He is a batman.
汉语中没有冠词，英语中可数名词单数前必须加限定词。batman 是可数名词，指“勤务兵”，所以要说 a batman，不能省略冠词。
Not this
He serves like a batman.
Use this
He serves as a batman.
表示“作为……身份/职务”时，英语用 as，而 like 意为“像……一样”。“serve as a batman”是固定搭配，意为“担任勤务兵”。
Not this
He is a Batman.
Use this
He is a batman.
受超级英雄“Batman（蝙蝠侠）”影响，学习者容易把普通名词 batman 大写。此处指“勤务兵”，是普通名词，应小写为 batman。
Choose the next layer that will help you use batmans with more confidence.
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Includes Idioms & Cultural references
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
Use batmans naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.