a marine
可数名词，单数前用 a/an。
My cousin is a marine.
我的表弟是一名海军陆战队员。
海军陆战队员；海军陆战队士兵
美国海军陆战队员；海景画；海洋题材画作；通常是海军陆战队成员的士兵,训练在船上或从船上服役；海军陆战队成员；美国海军陆战队成员
A soldier trained to serve on or from a ship, typically a member of a marine corps.
通常是海军陆战队成员的士兵,训练在船上或从船上服役
A soldier, normally a member of a marine corps, trained to serve on board or from a ship.
海军陆战队成员
A member of a marine corps.
美国海军陆战队成员
a member of the United States Marine Corps
描绘海洋主题的画作
A painting representing some marine subject.
海军陆战队员
a soldier who serves both on shipboard and on land
Her brother joined the marines after finishing high school.
她哥哥高中毕业后加入了海军陆战队。
用法提示：此处 marine 为名词，指海军陆战队员；复数形式 marines 表示这一兵种的成员。
A marine is trained to fight both on land and at sea.
海军陆战队员受训在陆地和海上作战。
用法提示：此处 marine 为名词单数，指一名海军陆战队士兵。
The young marine wrote letters home while stationed overseas.
这位年轻的海军陆战队员在海外驻防时给家里写信。
用法提示：此处 marine 为名词，指海军陆战队员，前有形容词 young 修饰。
可数名词，单数前用 a/an。
My cousin is a marine.
我的表弟是一名海军陆战队员。
复数形式为 marines，表示多名海军陆战队员。
The marines are training hard.
海军陆战队员们在刻苦训练。
用 serve as a marine 表示担任海军陆战队员。
He served as a marine for ten years.
他作为海军陆战队员服役了十年。
grammar · medium
易错句子My cousin is marine.
正确表达My cousin is a marine.
marine 在此指“海军陆战队士兵”，是可数名词单数，表示身份时前面必须加不定冠词 a；中文说“是海军陆战队员”没有冠词，所以容易漏掉。
grammar · medium
易错句子Two marine saved the child.
正确表达Two marines saved the child.
marine 是可数名词，前面有数词 two 时要用复数形式 marines；中文名词不随数词变化，容易忘记加 -s。
grammar · medium
易错句子He joined the marine last year.
正确表达He joined the marines last year.
表示“加入海军陆战队”这一部队或军种时，英语惯用复数 the marines（或 the Marine Corps）；the marine 是单数，只指“那名海军陆战队员”，不能表示整个部队。
海军陆战队（美国的一个军种）
He served in the Marine Corps for four years.
他在海军陆战队服役了四年。
加入海军陆战队
She joined the Marines right after high school.
她高中一毕业就加入了海军陆战队。
一名前海军陆战队员
The new coach is a former marine.
新来的教练是一名前海军陆战队员。
一名美国海军陆战队员
Two US marines were standing at the gate.
两名美国海军陆战队员站在门口。
一名海军陆战队退伍老兵
The charity was founded by a marine veteran.
这家慈善机构是由一名海军陆战队退伍老兵创办的。
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