Prepositions relate two events in time or two people or things in space. They form a closed class. They also represent abstract relations between two entities: Examples:
1. ("after":) "We came home from Mr. Boythorn's after six pleasant weeks."
2. ("after":) "The body of a little wizened Gond lay with its feet in the ashes, and Bagheera looked inquiringly at Mowgli. "That was done with a bamboo," said the boy, after one glance.
3. ("to":) "I must go down to the seas again, to the vagrant gypsy life, ..."
4. ("between" and "through":) "Between two golden tufts of summer grass, I see the world through hot air as through glass, ..."
5. ("during":) "During these years at Florence, Leonardo's history is the history of his art; he himself is lost in the bright cloud of it."
6. ("of":) "When to the sessions of sweet silent thought I summon up remembrances of things past."
Prepositions are accompanied by prepositional complements; these are usually noun phrases.[128] In the above examples, the prepositional complements are:
1. preposition: "after"; prepositional complement: "six pleasant weeks"
2. preposition: "after"; prepositional complement: "one glance"
3. preposition: "to"; prepositional complement: "the seas"; preposition: "to"; prepositional complement: "the vagrant gypsy life";
4. preposition: "Between"; prepositional complement: "two golden tufts of summer grass,"; preposition: "through"; prepositional complement: "hot air"; preposition: "as through"; prepositional complement: "glass."
5. preposition: "during"; prepositional complement: "these years at Florence."
6. preposition: "of"; prepositional complement: "sweet silent thought"; preposition: "of"; prepositional complement: "things past."







