The document discusses various topics related to prepositions in English including their basic characteristics, lexical compounding, co-occurrences with verbs and adjectives, deletion of prepositions under certain conditions, meanings of spatial and non-spatial prepositions, meaning extensions of spatial prepositions, semantic case functions, variation in use, use in discourse, phrasal verbs including their syntactic analysis and features, distinguishing phrasal verbs from verb+preposition combinations, productivity and idiomaticity of phrasal verbs, semantic categories of phrasal verbs, use of nonreferential it and there as subjects including their meanings and uses, and use of there in oral and written discourse.