Introductory it as Subject
The 'seem' group
Verbs with this pattern are concerned with what a situation seems to be or feels like to someone. These verbs are also found without the prepositional phrase, in the pattern it V that. Of the verbs in this meaning group, seem occurs much more frequently than any of the other verbs. All the verbs in this group are link verbs (see Chapter 5).
appear feel look seem sound
It seemed to me that the book sought to say something new.
It sounds to me that something dramatic should be done about the management of the school.