(IP 
  (PP-LOC 
    (P 在)
                    
    (LCP 
      (NP 
        (DP 
          (DT 这)
                    
          (CLP 
            (M 个)))
                    
        (CP 
          (WHNP-1 
            (-NONE- *OP*))
                    
          (CP 
            (IP 
              (NP-SBJ 
                (-NONE- *T*-1))
                    
              (VP 
                (NP-TMP 
                  (NT 当时))
                    
                (NP-LOC 
                  (NN 世界))
                    
                (ADVP 
                  (AD 最))
                    
                (VP 
                  (VA 大))))
                    
            (DEC 的)))
                    
        (NP 
          (NN 都市)))
                    
      (LC 里)))
                    
  (PU ，)
                    
  (LCP-SBJ 
    (NP 
      (NN 市街))
                    
    (LC 上))
                    
  (VP 
    (CC 不但)
                    
    (VP 
      (VCD 
        (VA 热闹)
                    
        (VV 拥挤)))
                    
    (PU ，)
                    
    (CC 而且)
                    
    (VP 
      (VV 显得)
                    
      (VP 
        (VV 生气勃勃)))))
arg0: 
                    市街 上 
                
argm: 
                    在 这 个 *OP* *T*-1 当时 世界 最 大 的 都市 里