In English, you can ask simple yes/no
questions by either inverting the subject
and verb or by using rising intonation:
--We can change money here.
(simple, declarative statement)
--Can we change money here?
(question with verb first)
--We can change money here?
(question with rising intonation)
NOTE: In the case of the simple present
tense, it is necessary to use a form of
the verb to do as an auxiliary in making
-->They like this bank.
-->Do they like this bank?
--You have a passport.
-->Do you have a passport?