at his; about his
Tom bat Mary darum, eine Rede an seiner Schule zu halten.
Tom asked Mary to give a speech at his school.
Ich weiß nicht, was ich an seiner Stelle täte.
I don't know what I would do in his place.
Was hättest du an seiner Stelle getan?
What would you have done in his place?
Jeder hätte an seiner Stelle genauso reagiert.
Anyone in his position would have reacted the same way.
Ich erkannte Tom sofort an seiner Stimme.
I recognized Tom immediately by his voice.
Ich werde dich bis zum Schluss beschützen, an seiner Stelle.
I will protect you until the very end, in his place.
— Battle Royale (2000)
Es besteht kein Zweifel an seiner Ehrlichkeit.
There is no doubt about his honesty.