He says that he (have还是has)___ been to Bangkok twice.

问题描述:

He says that he (have还是has)___ been to Bangkok twice.
He says that he ____ been to Bangkok twice.
(have还是has)?
可是says已经是加了耶...

has
that引导宾语从句,宾语从句的主语为he是第三人称单数,后应接has
而says是主句中的动词,形式由主句主语he决定,所以用has