\documentclass[a4paper,10pt]{article}

\usepackage[utf8x]{inputenc}
\usepackage{synttree}

\begin{document}

\begin{center}
\synttree[A'
[A[fucking]]
[SN[.x my neighbour]]]
\end{center}

\vspace{2cm}

\synttree[SN
[Det[mes]]
[N''[putains]
[P''[Prep[de]][N[voisins]]]]]

\vspace{2cm}

\synttree[I''
[N'' [Everybody]]
[V''
[V'
[V [came]]
[P''
[P [with]
[Exp [fucking]
[N'' [.x their children]]]]]]]]


\end{document}
