Li Ming is on the train还是 in the train

Li Ming is on the train还是 in the train 乘火车：on the train还是in the train? 是on the train还是in the train? on the train还是in the train正确?为什么? in the train和on the train 是in the bus ,in the train还是on the bus ,on the train? Jenny is on the train.对on the train提问 A bag is sitting on the sear in the train. take the train=by train=( )the train 括号里填一个介词 in on 还是填什么 in a train 与on the train的区别 in a train 还是 on a train The train may arrive in on time