1. Prepositions
1.1. Definition
1.2. Classification
1.2.1. According to Morphology
1.2.1.1. Simple prepositions
1.2.1.2. Compound prepositions
1.2.1.3. Derived prepositions
1.2.1.4. Composite prepositions
1.2.2. According to Semantics
1.2.2.1. Prepositions with a specific meaning
1.2.2.1.1. Prepositions of time
1.2.2.1.2. Prepositions of place or direction
1.2.2.1.3. Prepositions of purpose
1.2.2.1.4. Prepositions of similarity
1.2.2.1.5. Preposition of cause and reason
1.2.2.1.6. Preposition of manner
1.2.2.1.7. Preposition of mean
1.2.2.1.8. Preposition of relation
1.2.2.1.9. Preposition of measure
1.2.2.1.10. Preposition of direction
1.2.2.1.11. Preposition of agent
1.2.2.2. Prepositions without a specific meaning
2. Prepositional phrases (PPs)
3. Syntactic functions of PPs
3.1. Adverbial
3.1.1. Adjunct
3.1.2. Disjunct
3.1.3. Conjunct
3.2. Modifier in a NP
3.3. Complementation
3.3.1. Complementation of a verb
3.3.2. Complementation of an adjective