A statement is a sentence that tells  you something. A question  is a sentence that asks  you something. A statement does not require an answer. A question requires an answer.

statement:I like EnglishClub. 
question:Do you like EnglishClub?Yes
Why do you like EnglishClub?Because...

A written question in English always ends with a question mark: ?

Question Structure

The basic structure of a question is:

auxiliary verb+subject+main verb

Look at these example sentences. They all have the auxiliary verb before the subject:

 auxiliary verbsubjectmain verb 
 WillAnthonygoto Tokyo?

Exception!  For the main verb be  in Present Simple and Past Simple, there is no auxiliary verb. Look at these example sentences. They all have the main verb before the subject:

 main verb besubject 
 Wasithot outside?
Questions are also known as "interrogatives".

Question Types

There are three basic question types:

  • Yes/No: the answer is "yes or no"
  • Question-word: the answer is "information"
  • Choice: the answer is "in the question"

We look at these in more detail below.

Yes/No questions

Sometimes the only answer that we need is yes or no. Look at these examples:

auxiliary verbsubjectnotmain verb answer:
yes or no
Doyou wantdinner?Yes, I do.
Canyou drive? No, I can't.
Hasshenotfinishedher work?Yes, she has.
Didthey gohome?No, they didn't.

Exception!  Main verb be  in Present Simple and Past Simple:

main verb besubject 
WasRamat home?

Question-word questions

Sometimes we want more than yes or no for an answer. When asking for information, we usually place a question-word at the beginning of the sentence. The question-word indicates the information that we want,for example: 

where (place), when (time), why (reason), who (person).

Look at these examples:

question wordauxiliary verbnotsubjectmain verb answer:
Wheredo youlive? In Paris.
Whenwill wehavelunch?At 1pm.
Whyhasn'tTaradoneit?Because she can't.
Who(m)did shemeet? She met Ram.
Who*has  runout?Ati has run out.
Who**   ranout?Ati ran out.

*When the question-word is who , it acts as the subject.
**In Present Simple and Past Simple tenses, there is no auxiliary verb with who.

Exception.  Main verb be  in Present Simple and Past Simple:

question wordmain verb besubject

Choice questions

Sometimes we give our listener a choice. We ask them to choose between two possible answers. So their answer is (usually) already in the question. Look at these examples:

auxiliary verbsubjectmain verb or answer:
in question
Doyouwantteaorcoffee?Coffee, please.

Exception.  Main verb be  in Present Simple and Past Simple:

main verb besubject OR 
Isyour carwhiteorblack?
These pages show the three basic  types of question. There are other types of question, for example tag questions.

sources : Original Link