Difference for futures

They are going to have a baby;

Expresses a ...

• Certainty

• Promise

They will have a baby boy;

Expresses a ...

• Prediction

• Decision

Tomorrow I’m going to get up early;

Expresses a ...

• Refusal

• Decision

I won’t do it all by myself;

Expresses a ...

• Refusal

• Prediction

• Decision

• Certaint

I’m not going to do it all by myself;

Expresses a ...

• Habit

• Prediction

• Decision

• Refusal

Not a cloud in the sky. It’s going to be very hot;

Expresses a ...

• Prediction

• Certainty

• Refusal

• Decision

It’ll probably be very hot today;

Expresses a ...

• Certainty

• Decision

• Promise

• Prediction