This book is based on the research of verbal prefixes in Slavic languages and Germanic particles carried out at Tromsø University under supervision of Peter Svenonius. It offers a comparative analysis of the syntactic behavior of English particles and Russian prefixes in prepositional phrases. It concludes that these elements exhibit a lot of similarities and occupy the same position in the syntactic structure. Apart from studying particles and prefixes, this work also provides a thorough analysis of prepositions cross-linguistically, focusing mainly on Russian and English. The research presents extensive data on Russian prefixed verbs and prepositions which are further correlated to English particles. It is written in a clear language and meant for an audience with some knowledge of linguistics.