答案1
如果你对一个 hack 解决方案满意:
\documentclass[11pt]{beamer}
\usetheme{CambridgeUS}
\makeatletter
\defbeamertemplate*{title page}{mydefault}[1][]
{
\vbox{}
\vfill
\begingroup
\centering
\begin{beamercolorbox}[sep=8pt,center,#1]{institute}
\usebeamerfont{institute} Institue and Degree
\end{beamercolorbox}
\begin{beamercolorbox}[sep=8pt,center,#1]{title}
\usebeamerfont{title}\inserttitle
\end{beamercolorbox}%
\vskip1em\par
\begin{beamercolorbox}[sep=8pt,center,#1]{institute}
\usebeamerfont{subtitle}\insertsubtitle
\end{beamercolorbox}
\begin{beamercolorbox}[sep=8pt,center,#1]{author}
\usebeamerfont{author}supervisor \hspace*{2cm} \insertauthor
\end{beamercolorbox}
\begin{beamercolorbox}[sep=8pt,center,#1]{date}
\usebeamerfont{date}\insertdate
\end{beamercolorbox}\vskip0.5em
{\usebeamercolor[fg]{titlegraphic}\inserttitlegraphic\par}
\endgroup
\vfill
}
\setbeamertemplate{title page}[mydefault][colsep=-4bp,rounded=true,shadow=\beamer@themerounded@shadow]
\makeatother
\title[title for footline]{Realisation de quelque chose ...}
\subtitle{presente}
\author[name for footline]{myname}
\date[date for footline]{2015/2016}
\begin{document}
\begin{frame}
\titlepage
\end{frame}
\end{document}