is it . ？ have you ... ？ do they ... ? etc.
陈述句改一般疑问句或特殊疑问句
有助动词就把助动词提到句首
没有助动词就在句首加do，does，did，同时看情况加特殊疑问词（加了就会变成特殊疑问句）
Who saw you? Who did you see?
Who is she talking to? What is it like?
问一个东西怎么样，不一定是问外表
What .？Which .？How...？
What .？Which .？
What .？Which .？ 区别
what要求的选领域更大，而which，相当于几个人面对面有几种东西要你选择一个
HOW
How long does it take..... ？
How long does it take from....to... ？
从A到B要花费多长时间？
How long does it take to do something?
做某事要花费多长时间？
How long does it take sb to do something?
某人做某事要花费多长时间？
标签：...,What,How,long,疑问句,does From： https://www.cnblogs.com/zaiyewujiang/p/16818849.html