像这样吗?
\documentclass{article}
\begin{document}
\newcounter{gary}
\def\Gary#1{\refstepcounter{gary}{\parindent30pt\par #1 \hfill(\arabic{gary})}}
Consider the arguments:
\Gary{All square numbers\ldots}
\Gary{All non-negative numbers\ldots}
\Gary{Therefore\ldots}
Do you
\end{document}