This paper discusses the temporal relations that the particle le reflects in Mandarin sentences. While the verb suffix le_1, and the sentence final particle le_2 respectively represent the different phases of the perfective-inchoative aspectual opposition, these aspectual views predict different relations between E(vent)-time and R(eference)-time of a situation: Le_1 marks the perfective aspect of an actually occurred situation. E-time of this situation is either anterior to or included in its R-time. Le_2 indicates the inception of a newly developed state; R-time of the described situation is always included in its E-time.