这里的believed 是过去式,to be haunted的to be不能省略,haunted是构成被动语态的过去分词。一般只有believe后接形容词时才可以。例如:
Any sentence that we believe true can serve as a provisionally fixed point in the construction of our system.
a house that people believed to be haunted. 定语从句结构:“主语+believed sth to be+过去分词(done)”
that为关系代词,代替先行词“a house” 并在定语从句作谓语动词"believed的宾语,不定式to be haunted作宾语补足语。可以改为以下几种句子结构
=a house is believed to be haunted (by people)(被动语态,不定式作主语补足语)
=a house that is believed to be haunted (by people)(that定语从句, 关系代词在定语从句作主语成分)
=People believed a house to be haunted.(复合宾语结构)
=People believed that a house was haunted.(that宾语从句)
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