1.
一般疑问句中，如果原来的句子中只有实义动词，那么在改成一般疑问句的时候就要用助动词do,does或did，而原来的实义动词要用原形。如：
He
likes
playing
basketball.
改成
：Does
he
like
playing
baketball?
She
went
to
the
park
yesterday.
改成：
Did
she
go
to
the
park
yesterday?
2.
在含有am,
is,
are和have,
has,
had的句子中，直接把这些词放在句首即可，如：
I
am
mad.
改成：
Am
I
mad?
或者
：Are
you
mad?
She
is
from
Canada.
改成：
Is
she
from
Canada?
They
are
interested
in
English.
改成：
Are
they
interested
in
English?
They
have
arrived
in
Shanghai.
改成：Have
they
arrived
in
Shanghai?
希望能帮到你
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