当然可以呀,本来have a look已经是个完整的短语了不能再接宾语了,但加了at之后就不一样了,因为at是介词,后要接宾语才能构成完整的介宾短语,告诉你介词后面都要接宾语的,不接是不完整的.eg.The woman had a look at the boy.这个女士看了下那个男孩.Our boss had a look at that house.我们的老板看了下那个房子.