1. 指“军队”，既指“军队”的总称，也侧重指“陆军”。比较：navy 海军 / air force 空军2. 用作主语，谓语动词用单数 (从整体考虑)或复数 (从个体考虑)均可：The army was [were] wiped out. 这支军队被消灭了。3. “参军”及相关说法有两类，请注意区别：(1) join the army / go into the army / become a soldier / enter the army：它们均为终止性动词，不能与一段时间连用。：它们均为终止性动词(2) be in the army / be a soldier：均说明状态，可与一段时间连用。他参军10年了。正：He joined [went into] the army ten years ago. 正：He has been in the army for ten 正：He has been a soldier for ten years. 误：He joined [went into] the army for ten years.