【have a look at】=【take a look at】=【look at】看看， 看一眼

have a look at后面要加宾语

例句：

I insisted that we should have a look at every car

我坚持我们每辆车都应该看一下。

Before crossing the road, you should have a look at both ways.

过马路之前，你应该看看路的两边。

Can I have a look at your tree house?"

我能看看你的树屋吗?