* on spot 需与名词搭配形成“on spot + 名词”结构，作定语或状语，表示“与特定地点相关的”。 例：The team provides on spot technical support.
三、核心语义 * on the spot 当场；立即时间紧迫性 例：The suspect confessed on the spot. 在现场；在事发地点空间位置 例：Reporters were on the spot within 10 minutes.* on spot 在特定地点的；现场的描述事物属性 例：On spot testing ensures product quality.
四、应用场景示例 | 短语 | 正确用法 | 错误用法 | |---------------|-----------------------------------|-----------------------------------| | on the spot | She solved the problem on the spot.| She solved the problem on spot. | | on spot | On spot repairs reduce downtime. | Repairs were done on spot yesterday.| 五、对比 on the spot：固定副词短语，动作的即时性和现场发生，独立使用。 on spot：非固定搭配，需修饰名词，与特定地点的关联，不可独立作状语。