Prepositions and prepositional phrases is a very important yet difficult part to master in English,because by spatial iconicity the original spatial meaning of prepositions is projected onto more abstract conceptual domains.This paper studies on English prepositions and prepositional phrases,dividing them into different categories according to spatial iconicity,so that the polysemy of prepositions and prepositional phrases can be better understood,and then it proposes some suggestions for related English te...