<span style="color:#ff0000;">1-Did he leave the house after I talked to him?</span><br/><span style="color:#ff0000;">2-Did he leave the house since I talked to him?</span><br/><br/>I suppose one could use:<br/><span style="color:#ff0000;">3-Has he left the house since I talked to him?</span><br/><br/>But let us imagine that he has passed away. In that case, one could not use 3. I am pretty sure '1' works but I am not sure about '2'.<br/><br/>Gratefully,<br/>Navi.