( (IP (CP (IP (ADVP (AD 但是)) (PU ,) (NP-SBJ (-NONE- *pro*)) (VP (VC 是))) (SP 的)) (PU ,) (IP (NP-SBJ (PN 我)) (VP (ADVP (AD 曾经)) (ADVP (AD 还)) (VP (VP-FOC (VV 用) (NP-OBJ (NN 可卡因))) (VP (VV 上瘾))))) (PU .)))
ARG0: 我
ARGM-ADV: 曾经
ARGM-DIS: 还
REL: 上瘾