(IP (NP-SBJ (CP (WHNP-4 (-NONE- *OP*))
(CP (IP (NP-SBJ (-NONE- *T*-4))
(VP (VA 忧)))
(DEC 的))))
(VP (VC 是)
(IP-PRD (IP (NP-SBJ (NN 贸易)
(NN 顺差额))
(VP (ADVP (AD 急剧))
(VP (VV 回落))))
(PU ，)
(IP (NP-SBJ (-NONE- *pro*))
(VP (NP-TMP (NT 今年))
(VP (VV 可能)
(VP (VV 出现)
(NP-OBJ (CP (WHNP-5 (-NONE- *OP*))
(CP (IP (NP-SBJ (-NONE- *T*-5))
(VP (ADVP (AD 较))
(VP (VA 大))))
(DEC 的)))
(NP (NN 逆差))))))))))
ARG0: *T*-4
REL: 忧