check out可以和“某人”或“某物”搭配使用，且该“人”或“物”可以置于out之前或之后。现介绍如下：
check sb/sth out=check out sb/sth——（因对人或事感兴趣）观看，查看
check sb out=check out sb——了解……的情况
check sth out=check out sth——调查，核实；（从图书馆）借出（书）
check out——办理退房手续
checkout——（宾馆的）退房时间
If I hear about a website that sounds interesting,I check it out.
我要是听到什么有趣的网站，就会去看一下。
Let's go check out the new pub.
咱们到那家新酒吧去瞧瞧。
I'll check them out as potential employers.
我要把他们列为潜在的雇主，去了解一下情况。
I made a phone call to check out his address.
我打了个电话核实他的地址。
The library allows you to check out five books at a time.
图书馆允许每次借5本书。
We checked out at noon.
我们在中午退了房。
Check-out is at noon.
退房时间是中午之前。