The house seemed to have been broken into.请问to 后是什么成分?

The house seemed to have been broken into.请问to 后是什么成分? Everyone seemed to have a secret.怎么划分句子成分,seemed to又是什么成分? The wind seemed to have been blown from the top of the mount Have you ever been to the Opera House?是什么意思 The novel is believed to have been translated into Chinese. The police found that the house had been broken into and a l the house __and things __ A.has been broken into,stolen 这是答案 The house has been added to(=new rooms,etc.have been built o I've been to the house.这里为什么不用I've went to the house呢,have b everyone in the house had seemed to a house的同义句 have been to是什么时态? i have been to abroad once 请问这里的once 什么词性做什么成分