Going to

When to use GOING TO

The structure BE GOING TO is normally used to indicate the future but with some type of connection to the present. We use it in the following situations:

1. When we have already decided or we intend to do something in the future:

• They're going to retire to the beach - in fact they have already bought a little beach house.

2. When there are definite signs that something is going to happen:

• I think it is going to rain - I just felt a drop.

3. When something is about to happen:

• Get back! The bomb is going to explode.

   Subject + am, are, is + going to + infinitive

Examples

Affirmative sentences:

I am going to play volleyball.     I'm going to play volleyball.

You are going to play basketball.     You're going to play basketball.

Negative sentences:

I am not going to play football.     I'm not going to play football.

You are not going to play volleyball.     You're not going to play volleyball.     You aren't going to play volleyball.

Questions:

Is he going to play handball?

Are you going to play handball?

Click the link and do the exercise to practice.

http://www.ego4u.com/en/cram-up/grammar/future-1-going-to/exercises

Will and Going to

When to use WILL

In other cases, where there is no implicit or explicit connection to the present, use WILL:

1. For things that we decide to do now.

• I'll buy one for you too.
• I think I'll try one of those. (I just decided this right now)

2. When we think or believe something about the future.

• My team will not win the league this season.
• I think it will rain later so take an umbrella with you.

3. To make an offer, a promise or a threat.

• I'll give you a discount if you buy it right now.
• I promise I will behave next time.

Negative Sentences with WILL

In the negative, we add NOT to the end of WILL.

Examples:

I will not be in the office tomorrow.	Correct
I will be not in the office tomorrow.	Incorrect
They won't stay here.	Correct
They will stay not here.	Incorrect

Contractions

It is possible to use contractions in both positive and negative sentences.
With positive contractions WILL becomes 'LL and is joined to the subject:
With negative contractions, will not becomes won't:

Questions
To form a question using WILL, we reverse the order of the subject and WILL:

Affirmative	He	will	be	here tomorrow.
	Subject	WILL	Verb
Question	Will	he	be	here tomorrow?
	WILL	Subject	Verb

Examples:
Will they win the cup?
- Yes, they will.
- No, they won't.
Will you tell him the truth?
- Yes, I will.
- No, I won't.
Will she get angry?
- Yes, she will.
- No, she won't.

Clink the following links to practice will and going to.

http://www.englishgrammarsecrets.com/goingtoorwill/exercise1.html
http://www.englishgrammarsecrets.com/goingtoorwill/exercise2.html
http://www.englishgrammarsecrets.com/goingtoorwill/exercise3.html
http://www.englishgrammarsecrets.com/goingtoorwill/exercise4.html
http://www.englishgrammarsecrets.com/goingtoorwill/exercise5.html