Future tense using Shall and Will

Will and shall are two modal verbs used to show the future tense. Shall is used to indicate a promise or a threat , while will can be used for making promises or threats.
Both help in talking about present, as well.
Future simple with ” Will “
The most basic and common form used to express the future is ‘will’. The structure of ‘will’ is easy because it is the same for all subjects and you don’t need to change anything about the verb.

Future simple with ” shall”
We can also use “shall” to create the future simple tense . However, we typically only use “shall” with the “I” and “we” forms. We rarely use shall with “you,” “he,” “she,” “it,” and “they .” The structure of ‘shall’ is the same like ‘will’, you don’t need to change anything about the verb.
Examples :
• I shall be there soon.
• We shall not arrive before noon.
• What shall we do today ?
• Shall we take the bus or drive?
• It’s cold. Shall I close the window?