We use the future continuous, will + be + present participle,

• to talk about events that will be in progress at a particular time or over a period of time in the future,
• to talk about events that will happen in the normal course of things, and
• to politely enquire about a person's plans for the future.

We use be + to-infinitive to talk about future events which involve instruction or necessity.

http://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-22/session-2/activity-3

http://www.bbc.co.uk/learningenglish/english/course/towards-advanced/unit-10/session-1

The future perfect continuous, will + have + been + present participle, emphasises that an action or a repeating series of actions started before a time in the future and is still happening at that time in the future.

http://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-30/session-2/activity-3

The future perfect, will + have + past participle, is used to talk about a time in the future by when a particular activity will be completed.

http://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-26/session-2/activity-3

http://www.bbc.co.uk/learningenglish/english/course/upper-intermediate/unit-13/session-1

http://www.bbc.co.uk/learningenglish/english/course/upper-intermediate/unit-13/session-4

Different ways of talking about the future.

• will for statements about the future, for predictions about the future, and for instant decisions made at the time of speaking.
• be going to for present situations that extend into the future, for predictions based on present, physical evidence, and for plans.
• on the verge/brink of for events that are going to happen very soon.
• be about to for events that will happen in the near future.
• be sure/bound to for events we are confident will happen.
• be to for talking about the future in formal way.
• be due to for scheduled events.
• present simple for timetabled future events.
• present continuous for arrangements.
• future continuous for activities which are in progress at a future time.
• future perfect for actions completed before a specific future time.
• normal verbs with a future meaning like hope, plan, aim, intend, arrange, decide, etc.

http://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-17/session-2/activity-3

http://www.bbc.co.uk/learningenglish/english/course/upper-intermediate/unit-24/session-1

http://www.bbc.co.uk/learningenglish/english/course/towards-advanced/unit-2/session-1

http://www.bbc.co.uk/learningenglish/english/course/upper-intermediate/unit-24/session-4

Narrative tenses are used to describe events that happened in the past, and for telling stories.

http://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-20/session-2/activity-3

http://www.bbc.co.uk/learningenglish/english/course/upper-intermediate/unit-26/session-1

The past perfect continuous, had + been + present participle, describes an action which started in the past and continued up to another point in the past.

http://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-14/session-2/activity-3

The past perfect, had + past participle, describes something that happened before an action described using past simple.

http://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-7/session-2/activity-3

The past simple is used to describe an action that happened and finished in the past.

The past continuous, was/were + present participle, is used to describe an action that was in progress at a particular time in the past but not completed.

http://www.bbc.co.uk/learningenglish/english/course/lower-intermediate/unit-7/session-2/activity-4

The past simple describes an action that happened and finished in the past.

http://www.bbc.co.uk/learningenglish/english/course/lower-intermediate/unit-6/session-2/activity-5

We use will to make predictions about the future when we are certain that something is going to happen.

We use be going to when our prediction is based on a present situation or evidence.

We use might to show future posibility.

We use be likely to when we think something will happen, but we are not certain.

http://www.bbc.co.uk/learningenglish/english/course/lower-intermediate/unit-28/session-2/activity-3

We can use the present continuous, be + present participle, to talk about the future when we have already arranged to do something.

We can use be + going + to-infinitive to talk about something that we have decided to do in the future, but not arranged yet.

http://www.bbc.co.uk/learningenglish/english/course/lower-intermediate/unit-9/session-2/activity-3

The present perfect is used for life experiences, recent past actions that are important now, past situations that are still happening now, and answering 'How long' questions usually with for or since.

The past simple is used for completed actions in the past.

http://www.bbc.co.uk/learningenglish/english/course/lower-intermediate/unit-26/session-2/activity-3

The present perfect continuous, have + been + present participle, is used to describe an activity that started in the past and is continuing now or has recently finished.

http://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-2/session-2/activity-3

• ever: at any time in someone's life.
• never: not at any time in someone's life.

http://www.bbc.co.uk/learningenglish/english/course/lower-intermediate/unit-11/session-2/activity-5

The present perfect is often used with

• for meaning throughout a period of time or
• since meaning from a point in time to now

to talk about situations that started in the past and are continuing now.

http://www.bbc.co.uk/learningenglish/english/course/lower-intermediate/unit-12/session-2/activity-4

The present perfect is often used with

• just for something that happened only a short time ago,
• already when an action has happened before now or before we expected it to happen, and
• yet to ask if something has happened before now or to say something has not happened up to now.

http://www.bbc.co.uk/learningenglish/english/course/lower-intermediate/unit-14/session-2/activity-3

The present simple is used to describe things that we do regularly, facts, habits, truths and permanent situations.

The present continuous, be + present participle, is used to describe things that are happening at the time we are speaking, temporary situations and activities that are in progress. Stative verbs are not usually used in the present continuous.

http://www.bbc.co.uk/learningenglish/english/course/lower-intermediate/unit-2/session-2/activity-3

We use the present simple tense for things that we do regularly and for facts, habits, truths and permanent situations.

We use the present continuous for things that are happening at the time we are speaking, for temporary situations, and for activities that are in progress.

We use the present perfect for life experiences in the past, recent past actions that are important now, and past situations that are still happening now, often with how long, for and since; with just, already, yet for recent events.

http://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-1/session-2/activity-3

We use the present simple for things that we do regularly and for permanent situations.

We use the present continuous for things that are happening now and for temporary situations.

We use the past simple tense when an action or situation happens and finishes in the past.

We use the present perfect to talk about our experiences in the past often with ever or never; to talk about situations that started in the past and are continuing now often with how long, for or since; to say whether an action has happened or not at the present time with just, already or yet.

We use the present continuous to talk about the future when we have made an arrangement to do something.

We use be going to + infinitive for future plans.

http://www.bbc.co.uk/learningenglish/english/course/lower-intermediate/unit-20/session-2/activity-3