keep an eye on
1．watch in order to take care of 照料
Please keep an eye on my housewhen I am out on holiday．我外出度假时，请照料一下我的房子。
Please keep an eye on my child while I'm away．我不在时，请你帮我照看一下孩子。
2．have an eye on；watch carefully；not stop paying attention to 谨慎注意；不停地注意
We should always keep an eye on the progress of science in the world．我们应密切注意世界上的科学发展。
Keep an eye on the time so you won't be late．注意看看时间，不要迟到了。
We have to keep an eye on the opportunities for business．我们必须注意做生意的机会。
A good driver keeps his eye on the road．好的驾驶员会注意看路。
3．guard 看守；密切注视；警戒
That man looks suspicious；keep an eye on him．那人形迹可疑，注意他。
The bank guard kept an eye on the parking lot while they were loading the armored truck with money．在给装甲车上装钱时，银行的卫兵密切注视着停车场。