除用作不及物动词，有时look也可用作及物动词，其用法之一便是后跟疑问词引导的从句作宾语。此时多用于祈使语气，表示【瞧瞧 / 看看 / 搞清楚 / 弄明白 / 留意…】，有时带有感情色彩。
Look whether the postman has been yet. 去看看邮递员来过没有？
Please look what time the plane takes off. 请留心 / 留意飞机起飞时间。
Look what a mess you've made of your life. 看看你把自己的生活都弄成什么样子啦。
Now look what you have done! You’ve broken another glass. 瞧你干的好事，你有打碎了一个杯子。
Look what time the clock says. 去看看几点了。
Look where you are going! 看你走哪儿去了！
Look where you put your feet! 瞧你把脚往哪儿搁！
Look how long it took Mel to get a job. 看看吧，梅尔费了多少时间才找到一份工作。