答案1
\documentclass{beamer}
\AtBeginSection[] {
\begin{frame}<beamer>
\frametitle{A continuación}
\tableofcontents[currentsection,subsubsectionstyle=show/show/
show/shaded]
\end{frame}
}
\begin{document}
\section{title}
\subsection{title}
\subsubsection{title}
\begin{frame}
abc
\end{frame}
\section{title}
\subsection{title}
\subsubsection{title}
\begin{frame}
abc
\end{frame}
\end{document}