\documentclass{beamer}

\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[french]{babel}

\usetheme{Berlin}
% autres themes visibles ici:
% http://deic.uab.es/~iblanes/beamer_gallery/index_by_theme.html

% suppression des symboles de navigation
\setbeamertemplate{navigation symbols}{}

% affichage du plan a chaque debut de section
\AtBeginSection[]
{
 \frame<handout:0>
 {
   \transdissolve<1>[duration=0.2]%
   \frametitle{Plan}
   \tableofcontents[current,currentsubsection]
 }
}

% affichage du plan a chaque debut de sous-section
\AtBeginSubsection[]
{
 \frame<handout:0>
 {
   \transdissolve<1>[duration=0.2]%
   \frametitle{Plan}
   \tableofcontents[current,currentsubsection]
 }
}

% affichage du texte invisible en grise
\setbeamercovered{transparent}

\mode<presentation>

\title{Titre de votre expos\'e}
\author{Votre nom}
\date{La date}

\begin{document}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
\titlepage
\end{frame}

\begin{frame}
\frametitle{Plan de votre pr\'esentation}
\tableofcontents
\end{frame}

\section{La premi\`ere section}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
\frametitle{Slide 1}

Du texte ici, qui ne se voit qu'\`a partir du \uncover<2->{deuxi\`eme 
affichage.}

\begin{itemize}
\item<1-1> texte 1
\item<2-> texte 2
\item<3-> texte 3
\end{itemize}

\end{frame}

\subsection{La premi\`ere sous-section}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
\frametitle{Slide 2}

\begin{block}{Le titre du bloc}
Et son contenu
\end{block}

\end{frame}

\begin{frame}
\frametitle{Slide 3}
\end{frame}

\begin{frame}
\frametitle{Slide 4}
\end{frame}

\subsection{La deuxi\`eme sous-section}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
\frametitle{Slide 5}
\end{frame}

\begin{frame}
\frametitle{Slide 6}
\end{frame}

\section{La deuxi\`eme section}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
\frametitle{Slide 7}

\end{frame}

\end{document}


 

