P-words are prepositions and adverbs that no longer perform prepositional or adverbial functions including particles in phrasal verbs, quasi-modal verbs, and determiner phrases and infinitive markers. P-words are function words, which are words that perform definite grammatical functions but that lack definite lexical meaning.
Grammatical Form of English P-words explains the grammatical forms alongside which p-words function.
Grammatical Functions of English P-words explains the two grammatical functions of p-words in English grammar.
Using P-words as Particles exemplifies p-words performing the grammatical function of particle in phrasal verbs, quasi-modal verbs, and determiner phrases.
Using P-words as Infinitive Markers exemplifies p-words performing the grammatical function of infinitive marker in infinitive forms of verbs.