字面意思是“保持眼睛在...上”，引申为 “注视；留意；密切关注；紧盯”，强调主动、持续地将注意力集中在某人/某物上，确保其状态、安全或进展。
该短语的结构为 keep + 形容词性物主代词（my/your/his/her/our/their） + eyes on + 宾语（sb./sth.），常见场景如下：
表示“持续看着某人/某物，不转移视线”，常用于需要集中注意力的场景。
Please keep your eyes on the blackboard while I explain the math problem.（我讲解数学题时，请盯着黑板。）
He kept his eyes on the door, waiting anxiously for his wife to come home.（他紧盯着门，焦急地等妻子回家。）
Drivers must keep their eyes on the road at all times.（司机必须时刻注视路面。）
表示“关注某人/某物，确保其安全或正常”，相当于 watch over 或 monitor。
Can you keep your eyes on my bag while I go to the restroom?（我去洗手间时，你能帮我看一下包吗？）
The teacher kept her eyes on the new student to make sure he didn’t feel left out.（老师留意着新生，确保他不觉得被孤立。）
I need to keep my eyes on the cake in the oven—it might burn.（我得盯着烤箱里的蛋糕，不然会烤焦。）
引申为“密切关注某件事的进展、变化或潜在风险”。
Business owners must keep their eyes on market trends to stay competitive.（企业主必须关注市场趋势以保持竞争力。）
Keep your eyes on the weather forecast—they say a storm is coming.（留意天气预报，据说有暴风雨要来。）
Parents should keep their eyes on their kids’ screen time.（父母应关注孩子的屏幕使用时间。）
这是一句常用习语，意为 “专注于目标；不被干扰”（prize 指代“目标/奖励”）。
No matter how hard it gets, keep your eyes on the prize—you’ll graduate with honors.（无论多困难，紧盯目标——你会以优异成绩毕业的。）
The team kept their eyes on the prize and won the championship.（团队专注于目标，最终赢得了冠军。）
不能省略介词 "on"：必须说 keep your eyes on sth.，不能说 keep your eyes sth.。
物主代词的替换：根据主语调整，如 I keep my eyes on... / You keep your eyes on... / They keep their eyes on...。
时态变化：过去式为 kept one's eyes on，如 She kept her eyes on the clock during the exam.（考试时她盯着时钟。）
keep one's eyes on：关注/注视（主动、持续）；
have one's eyes on：想要/看中（表示对某物的渴望），如 I have my eyes on that new phone.（我看中了那部新手机。）
"keep one's eyes on" 是一个实用的日常短语，核心是“持续关注”，适用于从“紧盯具体事物”到“关注抽象趋势”的多种场景。记住结合物主代词和介词 "on" 的搭配，就能准确使用啦！