English: Syntactic trees representing the structures of unergative and unaccusative verbs according to the generative framework. Created with LaTeX (package tikz-qtree). Source code:

\documentclass[12pt,border=10pt]{standalone}

\usepackage{silence,tikz-qtree,stix2,gb4e}

\tikzset{every tree node/.style={align=center,anchor=north}}

\WarningsOff

\begin{document}

\Tree [.\emph{v}P [.\textbf{\emph{subject}}\\\textbf{\emph{(agent)}} ] [.\ibar{\emph{v}} [.\emph{v} ] [.VP\\\textbf{\emph{verb}} ] ] ]%

\hspace{10pt}%

\Tree [.\emph{v}P [.\emph{v} ] [.VP [.V\\\textbf{\emph{verb}} ] [.\textbf{\emph{subject}}\\\textbf{\emph{(theme)}} ] ] ]%

\end{document}