HEe will come back after half an hour哪错暸喒改正

HEe will come back after half an hour哪错暸喒改正
HEe will come back after half an hour哪错暸喒改正

HEe will come back after half an hour哪错暸喒改正
我觉得应该是after后加一个时间点吧,比如说after two o'clock,要加half an hour这样的一段时间,应该用in吧,He will come back in half an hour