Flowchart
Simple Past

Flowchart content
Simple future
has two different forms in English:
WILL
BE GOING TO
FORM Will:
+ (will + verb).
- (won´t + verb).
1. Express a Voluntary Action:

Although the two forms can sometimes be used interchangeably, they often express two very different meanings.
"Will" and "be going to" refer to a specific time in he future.
2. Express a Promise:
When you ask to someone help or to voluntarily do something for you. Similary you can use "will not" or "won't" when you refuse to voluntarily do something for you.
"Will" is usually used in promises.
Examples:
I will call you when I arrive.
If I am elected President of the United States,
I will make sure everyone has access to inexpensive health insurance.
I promise I will not tell him about the surprise party.
Don't worry, I'll be careful.
I won't tell anyone your secretI will call you when I arrive.
If I am elected President of the United States,
I will make sure everyone has access to inexpensive health insurance.
I promise I will not tell him about the surprise party.
Don't worry, I'll be careful.
I won't tell anyone your secret.
Examples:
I will send you the information when I get it.I will translate the email, so Mr. Smith can read it.
Will you help me move this heavy table?
Will you make dinner?
I will not do your homework for you.
I won't do all the housework myself!
3. Express a Prediction:
USES OF "WILL"
You can use "will" if you want to:
Will can express the idea of a general prediction about the future. Predictions are guesses about what might happen in the future.
FORM Be Going To:
+ [am/is/are + going to + verb]
- [am/is/are + not going to + verb]
USES OF "BE GOING TO"
In the Simple Future, it is not always clear which USE the speaker has in mind. Often, there is more than one way to interpret a sentence's meaning
Like all future forms, the Simple Future cannot be used in clauses beginning with time expressions such as: when, while, before, after, by the time, as soon as, if, unless, etc. Instead of Simple Future, Simple Present is used.
You can use "be going to" if you want to:
1.Express a Plan
"Be going to" expresses that something is a plan. It expresses the idea that a person intends to do something in the future. It does not matter whether the plan is realistic or not.
Examples:
The year 2222 is going to be a very interesting year.
John Smith is going to be the next President.
The movie "Zenith" is going to win several Academy Awards.
2.Express a Prediction
"be going to" can express the idea of a general prediction about the future. Predictions are guesses about what might happen in the future.
Examples:
He is going to spend his vacation in Hawaii.She is not going to spend her vacation in Hawaii.
Examples:
When you will arrive tonight, we will go out for dinner. Not CorrectWhen you arrive tonight, we will go out for dinner. Correct
ADVERB PLACEMENT: The examples below show the placement for grammar adverbs such as: always, only, never, ever, still, just, etc.
Examples:
You will never help him.
Will you ever help him?
Are you ever going to meet Jane?
You are You are never going to meet Jane.