This indication is usually expressed through the use of will with certain words or expressions such as:

Maybe;

I think;

Probably;

I'm not sure;

I guess;

I don't know;

I hope;

I expect, etc.

talk about an action that is already planned and will happen in the near future, and are based on evidence, the future tense with "going to" is used.

Examples:

I am going to have an exam tomorrow

Bob and I are going to be on vaction in July

Negative: Sujeito + verbo to be (is/am/are) + not + going to +
infinitive of the main verb without “to”

Sally is not going to move to another city next year

Ben and Jennifer are not going to get married

Interrogative: Verbo to be (am/is/are) + sujeito + going to +
infinitive of the main verb without “to”

Are the children going to visit their grandmother this weekend?

Are you going to study tonight?

Structure: Subject + Will + main verb in the infinitive without the -to + complement

Exemples: "I will go to school tomorrow"

"They will study for the exam tonight"

Negative form

Structure: Subject + Will + not + main verb in the infinitive without the -to + complement

Exemples: "She won't work tomorrow"

"I will not read this book tonight"

Interrogativa form

Structure: Will + Subject + main verb in the infinitive without the -to + complement ?

Exemples: "Will you go to the party?"

"Will it rain tomorrow?"