One Direction plans to travel to Chile next year, while Justin Bieber intends to study Spanish. The future tense in English can be expressed using "will" or "be going to". "Will" indicates a spontaneous decision without prior planning, while "be going to" refers to premeditated plans or predictions. Both can be used to talk about the future in affirmative, interrogative, and negative forms depending on whether an action will or will not occur.

2.  One Direction will
travel to Chile next
year.
 (Decision)
 Justin Bieber is going
to study Spanish.
 (Plan)

3.  The future Simple has 2 differents forms in English: “WILL” and
“BE GOING TO.”
 WILL has to do with a decision without planning it before.
I will have a cup of tea. She will pick up the phone.

4.  A) To talk about future predictions
 “When we arrive home, the children will be in
bed”
 B) To express a promise
 “I promise I will love you forever”
 C) To express an offer
 “That bag looks heavy, I will carry it for you”

5.  A) To express plans and intentions
 “Are you going to do anything this weekend?
 Yes, I am going to read a book”
 B) To make predictions.
 “It is very cloud, I think it is going to rain”

6.  Affirmative: I will travel to Madrid in
december.
 Interrogative: Will you travel by bus?
 Negative: I will not travel with you or I won´t
travel with you.

7.  Affirmative: I am going to study for the test.
 Interrogative: Are you going to get out at
night?
 Negative: She looks sick. I think she is not
going to get out tonight.

8.  Tomorrow: I will see you tomorrow.
 Next week: I am going to study the next
week.
 Next month: She will travel the next month.
 Next year: I think he will get married the next
year.