I have ——(have) the dictionary for two days.咋做?

问题描述:

I have ——(have) the dictionary for two days.咋做?
Both Tom and Jack have visited the Summer Place.改为同义句?
( )( )Tom ( )Jack ( ) visited the Summer Place

had为什么?现在完成时,谓语动词助动词have /has + 过去分词,这本字典我已经买了两天了