变一般疑问句:

第一步，一般疑问句还原成陈述句、第二步、看题目要求是就什么提问，比如地点用where,时间用when,人用who，等等、第三部、把特殊疑问词置于句首，然后再把陈述句语序变成疑问句语序，有be动词和情态动词的提前，没有的根据时态和人称加助动词进去。你没有举例子，只能这样说了咯。

Is
this
a
pencil?
Yes，it
is.
陈述句变一般疑问句的方法：
1）对于助动词、情态动词、be动词作谓语的，掉换主谓。如：
He's
a
teacher.
Is
he
a
teacher?
He
can
swim.
Can
he
swim?
He'd
like
to
go
there.
Would
he
like
to
go
there?
2）对于实意动词作谓语的，动词原型借助do，三人称单数借助does，过去式借助did，加在句首，再把谓语改为动词原型。如：
I
like
him.
Do
I
like
him?
He
likes
me.
Does
he
like
me?
I
liked
him.
Did
I
like
him?
特殊疑问句：
先改一般疑问句，去掉要提问的成分，再在句首加相应疑问词。如：
I
will
go
there
by
bus.
Will
I
go
there
by
bus?

怎么改一般疑问句？