Syntactic function of the prepositional group

1. At group level
– as an element of the prepositional group
§ qualifier in a nominal group (Have you got any books on mathematics?)
§ qualifier in an adjectival group (My son is brilliant at mathematics.)
§ qualifier in an adverbial group (They don’t live far from here.)
§ completive in another prepositional group (I’m free everyday except on Monday.)

2. At clause level
– as sequential element at clause with exception of predicator
§ adjunct most typical (All this happened before the war.)
§ subject (After lunch it’ll be the best.)
§ prepositional object (I don’t believe in wasting money.)
§ subject complement (Monica must be out of her mind.)
§ object complement (His illness left him without a job.)
§ predicator complement (The procession came to a holt.)
§ disjunct (In all honesty I don’t believe a word he said.)
§ conjunct (In that case I am leaving, too.)