Explicação:

When talking about the future, we have two forms to express it: "will" and "going to".

1) "Will" is used to express a future action or event that is not planned or decided in advance. It is often used for predictions, promises, offers, and spontaneous decisions.

Example:

- I will travel to Europe next year. (prediction)

- She will help you with your homework. (promise)

- Will you join us for dinner? (offer)

- I forgot my umbrella. I will buy a new one. (spontaneous decision)

2) "Going to" is used to express a future action or event that has already been planned or decided. It is often used for intentions, plans, and predictions based on evidence or current situations.

Example:

- I am going to study for my exam tomorrow. (intention)

- They are going to have a party next weekend. (plan)

- Look at those dark clouds. It's going to rain soon. (prediction based on evidence)

Both "will" and "going to" can be used interchangeably in some cases, but they have slightly different nuances. "Will" is more commonly used for spontaneous decisions or predictions without evidence, while "going to" is used for planned actions or predictions based on evidence or current situations.