future tense in Eghlish

Be going to
1) Used to decide to do sth.(intention): e.g. I’m going to watch the next programme.
2) For refusal: I’m sorry, but I’m not going to walk half a mile in the rain.
3) It’s similar to the present continuous tense:
I’m going to visit my friend at the weekend. = I’m visiting my friend….
4) For prediction (sth. Is going to happen): The ladder is moving, so David is going to fall.

Will Vs. be going to
Will Be going to
Neutral meaning: I’ll be twenty next Friday. An intention, sth. (We have already decided to do): We’re going to have a meal.
Instant decision or arrangement to do so: There’s a postbox over there. I’ll post these letters. We have already decided: I’m going out, I’m going to post these letters.
Prediction about the future: One day people will travel to Marce. Prediction (what’s going to happen in the future): There isn’t a cloud in the sky. It’s going to be a lovely day.

Present Continuos
1) For what someone has arranged to do in the future:
- I’m going to an ice hockey match.(he has arranged to go to the match, he has a ticket.)
2) Used to talk about things happing now:
- We’re having a party tomorrow.
- We’re = = = = at the moment.
3) When phrases of time mentioned, it is clear that the sentence tense refers to (future): The tigers are plying the kings.
4) This tense is similar to (be going to) in the meaning:
- We’re having a party at the moment. (we have made/the arrangement)
- We’re going to have a party next week.

Present simple for a timetable
It is used for timetable:
- The train leaves at 7 o’clock in he morning.
Be to/ be about
(i) Be to : in news reports:
- The football match is to conduct next week.
(ii) Be about to: for the very near future:
- The plane is at the end of the running. It is about to take off.
Will be doing
1) For an action over a period of a time (=in the middle of an action)
- When the men leave the building, the police will be waiting for them.
2) For an action which will happen in the course of events (schadual of future events): - The party will be starting at ten o’clock. (part of evening’s events)
3) As a part of routine:
- Suha and layla will be cleaning the house tomorrow. They always do it on Sunday.