В английском алфавите 26 букв. Из них

C. BE GOING TO (намерение) versus WILL (будущего простого времени)

В основном 2 разницы:

• 
  be going to будущее время имеющий признаки в настоящем; will мнение о будущем;
  
• 
  be going to запланировано на ближайшее время; will неопределенное время
  
  

The lift is going to break down. (It is making strange noises; we had better get out on

the next floor.)

The lift will break down. (Perhaps the lifts of this kind do not normally last long).

He is going to get over. (There are signs of recovery).

He will get over. (I confidently say that he will get better, hut I don’t know when.)

It will be rainy tomorrow. (I think it will rain, it is my opinion.)

It is going to be rainy tomorrow. (The sky is dark with clouds).

Иногда они схожи и взаимозаменяемы.

It will take a long time to photocopy all the documents.

It is going to take a long time to photocopy all the documents.