英语的疑问句中什么时候用is开头，什么时候用do开头？

如果给出的陈述句中有be，那么提问就用be开头。如果没有be，就自己添个do，遇到主语三单变does。
表示事物的特征状态，用be。表示具体动作用do，主语三单变does。因为be有“是”的意思，do有“做”的意思。
如果直接让你造句，你可以先造个陈述句，然后变问句。
you are a student.---Are you a student?
You get up at 6 .-----Do you get up at 6?

You sail → Do you sail?
因为 you sail 就等於 you do sail

I am fat → Am I fat?

问关於动作的问题就是do,
问"是不是"的话就是is

如例子，看原来不是一问的句子就知道啦

为了简单明快地说清楚,这样讲好了,are后面跟的是名词,或者形容词,或者是某一状态的描述,比如are
you
student,are
you
ok,are
you
cooking,are
you
typing?
而do不一样了,他这样用,追查的是手段,how
do
you
study？着重的是什么方式去学,如果how
is
your
study?问的是什么状态.
这就是不同了.

如果是系表结构就用be 动词提问， You are a teacher. Are you a teacher?
是主谓结构就用助动词do提问。I like sports. Do you like sports?

Is this your book ?
Yes, it is.
No, It is not.
Is he coming ?

Does she hate me ?
Yes, She hates you..

Do you have my cell phone number ?
Yes, I do .
No. I don't
Do they need your help ?
Yes, They do need your help.

SOMETHING EXTRA FOR YOU..

HE, SHE, IT --- IS, DOES
I,YOU,WE, THEY - ARE,DO