(IP 
  (ADVP 
    (AD 尤其))
                    
  (PP-TMP 
    (P 当)
                    
    (LCP 
      (IP 
        (NP-SBJ 
          (NN 弟弟))
                    
        (VP 
          (VP 
            (ADVP 
              (AD 也))
                    
            (VP 
              (VV 步上後尘)))
                    
          (PU ，)
                    
          (VP 
            (PP-DIR 
              (P 从)
                    
              (NP 
                (NN 企管)
                    
                (NN 系)))
                    
            (VP 
              (VV 转攻)
                    
              (NP-OBJ 
                (NN 社会学))))))
                    
      (LC 时)))
                    
  (PU ，)
                    
  (NP-SBJ 
    (NN 父母))
                    
  (VP 
    (ADVP 
      (AD 依旧))
                    
    (VP 
      (VV 未置一词))))
arg0: 
                    弟弟 
                
arg1: 
                    社会学 
                
arg2: 
                    从 企管 系