[ + (that) ] I presume (that) they're not coming, since they haven't replied to the invitation.
[ + speech ] You are Dr Smith, I presume?
"Are we walking to the hotel?" "I presume not/so."
[ + obj + adj ] The boat's captain is missing, presumed dead (= it is believed that he is dead).
In British law, you are presumed innocent until you are proved guilty.
[ + obj + to infinitive ] The universe is presumed to contain many other planets with some form of life.