Can I have a look at your new computer ———————— 划线部分为什么加个at

look本身是不及物动词,与它同义的变形have a look也是不及物动词,如果后面有宾语必须加介词at.如果后面不加at,have a look表示看一看.Let me have a look.让我看一看.at后面加宾格对吗对，后面加宾语。