Not only__the computer he___been sold by his son for gambling debts

问题描述:

Not only__the computer he___been sold by his son for gambling debts
Not only __ the computer he ___ been sold by his son for gambling debts but also his new car.(答案是has:had)为什么不填/:has?
为什么是has the computer?

the computer he has had been sold by his son
the computer had been sold
他所拥有的那台电脑被他儿子卖了.
因为not only放在句首,所以句子用的是倒装.