Shall we go for a walk? : suggestion, request, question, offer
‘Shall we go for a walk?’ is an question.
Because by the above sentence a question is asking to someone. Again question mark (?) is proving it.
We know that Sentences are of five kinds according to functions and Interrogative Sentence is one of them. The above sentence is an of example of Interrogative sentence because it asks a question.
To make an Interrogative sentence auxiliary verb is placed first and after that subject, verb, objects and a question mark are used one by one. The given sentence is written in Simple Future Tense.
‘Shall and will’ are auxiliary verbs of Future Indefinite Tense and always used verb’s Present Form.
‘Shall we go for a walk?’ is both a question and a suggestion.
The word ‘shall’ is used to ask if something can be done. Hence it is a suggestion.
To change it to a request, the question can be framed as:
May we go for a walk?
A request needs to be polite. The word ‘may’ adds that politeness.
To make it a simple, straightforward question, the question would be:
Can we go for a walk?
To make it sound like an offer, the question could be:
Would you want me to go on a walk with you?
Answer:
Shall we go for a walk? : suggestion, request, question, offer