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答案1
非常簡單的測試:
\documentclass{article}
\usepackage{expex}
\makeatletter
\renewcommand{\exnoprint}{\llap{\ep@exnoformat{\ep@rawexnoprint}}}
\makeatother
\begin{document}
\excnt=9
\ex
\begingl
\gla L'homme est parti hier.//
\glb the.man is left yesterday.//
\glft ``The man left yesterday''//
\endgl
\xe
\ex
\begingl
\gla L'homme est parti aujourd'hui.//
\glb the.man is left today.//
\glft ``The man left today''//
\endgl
\xe
\end{document}