what time will the train leave?划分句子成分是什么结构?

what time will the next train leave What time will the next train leave?变否定疑问 问：What time will the next train leave what time will the next train leave的回答 What time will the next train leave?中的next是什么词性?麻烦讲解下, that time will the next train leave what time does the train leave? what time will the next train leave for New York?A:every 25m What time will the next train leave?中的What time可以用when代替吗?为什 — What time does the next train to Guangzhou leave? What time does the train leave/ ---_What time does the train what time does the train leave?Can you tell me?怎么改成复合句