@Arielhs,
1.will/shall +do →something will happen,especially something objective
2.be going to +do→something has been planned or something will happened surely
3.be about to +do→a coincidence of timing
4.be done→the impending action or the state of being
5.be to +do→regular actions or something has to be done
6.do/does→the action strictly follows the plan
7.would +do →hoped to do something or planned to do something before
8.was/were going to +do→ planned to do something before or arranged to do something
9.was/were to+do→have arranged something in the past