the bank is reported in the local newspaper ________ in broad daylinght yesterday答案to have been robbed 已经被抢了用have been robbed 为什么要加上to ?

in the local newspaper 和 in broad daylight yesterday是这句话的介词短语，不用考虑。所以就变成
The bank is reported to have been robbed. 位于两个动词中间，所以必须要加to的。

have to do stn

be reported to do...据报道……
同义句
It is reported in the local newspaper that the bank have been robbed in broad daylinght yesterday