1
serve as (the) first mate
常省略冠词，尤其是在职位名称前。
He served as first mate on a container ship for five years.
他在一艘集装箱船上担任了五年的大副。
大副
先理解核心含义，再看它在真实句子里的用法。
大副
the officer on a merchant ship who is second in command to the captain
He served as first mate on a container ship for five years.
他在一艘集装箱船上担任了五年的大副。
商船上仅次于船长的军官,负责船只的安全和保安。
An officer on a merchant ship next in rank to the captain and responsible to the captain for the safety and security of the ship.
The first mate checked the cargo list before we left the port.
大副在我们离开港口前检查了货物清单。
She worked as first mate on a fishing boat for three years.
她在一艘渔船上当了三年的（一等）大副。
The captain and his first mates are responsible for the safety of everyone on board.
船长和他的几位大副负责船上所有人的安全。
常省略冠词，尤其是在职位名称前。
He served as first mate on a container ship for five years.
他在一艘集装箱船上担任了五年的大副。
The first mate of the Titanic was William Murdoch.
泰坦尼克号的大副是威廉·默多克。
appoint后可直接跟职位，省略as。
The captain appointed her first mate after she passed the exams.
船长在她通过考试后任命她为一等大副。
作为主语时通常带定冠词the。
The first mate took the night watch while the captain slept.
大副在船长睡觉时值夜班。
Not this
First mate is responsible for navigation.
Use this
The first mate is responsible for navigation.
在英语中，可数单数名词前通常需要冠词。'first mate' 是一个职位，前面应加定冠词 'the'，表示特指。
Not this
The first officer of the cargo ship is very experienced.
Use this
The first mate of the cargo ship is very experienced.
在商船上，大副的英文是 'first mate'，而 'first officer' 通常用于海军或航空领域。这是一个常见的翻译混淆。
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船上的大副
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 DICTIONARY_API_DEV, ECDICT, WIKTIONARY.