Truing [sic] to get my head around Halliday's treatment of projection as clause complexing:a) Many believe that John is right.b) That John is right is believed by many.If (a) Is a clause complex, how do I analyse (b) which seems to be the passive form of the same?
(a) is not a clause complex. It is a clause simplex with an embedded projection (i.e. a 'pre-projected fact') serving as Phenomenon, and (b) is its receptive agnate.
From 'roundabout': (a) is agnate with Many believe the fact that John is right
From 'above': the projection was not created by the process of believing. It was projected by a previous figure of a senser sensing or sayer saying (i.e. 'pre-projected'), and the process of believing ranges over it as a metaphenomenon.
See a transitivity analysis here.
See why (ranking) projections are not clause constituents here.