in - через (in two days/ in a week/ in a month/ in a year)
+ I/We + shall + V1f.
You/He/She/ It/ They + will + V1f.
- I/We + shall not (shan’t) + V1f.
You/He/She + will not (won’t) + V1f.
It/They
? Shall + I/We + V1f?
Will + You/He/She + V1f?
It/ They
I shall work tomorrow.
She will work tomorrow.
We shall not go to the park tomorrow.
They will not go to the park tomorrow.
Shall we work next week? –
Yes, we shall. / No we shall not.
Will they go to the disco tomorrow? -
Yes, they will. / No, they will not.