3、例句如下：
I should look out if I were you! 如果我是你，我會小心的。
Look out! A truck's coming! Get out of the way. 車來了，快閃開！
Look out for hackers who might try to break your system. 小心那些想試圖破壞你的`系統的駭客。
I'm just looking out for my family.我只是關心我的家庭而已。
look out 後接的介詞
1、look out upon：朝向
例句：He longed for some central certainty, from which he could look out upon the world safe from hurt.
他渴望能有一個穩當的立腳點，既可觀察世界又不受其害。
2、look out on：面臨
例句：Today, we look out on the horizon of a new century.
今天，我們眺望新世紀的地平線。
3、look out at：向外眺望
例句：We love to sit on the floor and look out at the beach and the sea.
我們喜歡坐在大地板上，向外眺望海灘和大海。