Grammar tenses

• Present progressive is used to talk about actions happening a the moment of speaking or around that time
• Present progressive is used to talk about habitual actions over a period of time
• Present progressive is used to talk about a repeated action that annoys the speaker
• Present progressive is used to talk about changing situations
• Present progressive is used to talk about arranged situations for the near future
• Present simple is used to talk about scientific permanent actions
• Present simple is used to talk about facts and abilities
• Present simple is used to talk about habitual actions
• Present simple is used to talk about a single action begun and completed approximately at the moment of speach
• Present simple is used to talk about a future action that is considered as very certain to happen
• Present simple is used in adverbial clauses of time with future or imperative
• Present simple is used to contrast past and present
• Present simple is used to describe the past as if is happening now called historic past
• Present perfect is used to talk about states that began in the past and continue to the present
• Present perfect is used to talk about habits plus adverbs that show time leading to the present
• Present perfect is used to talk about actions that began an ended in the past. No time specified
• Present perfect is used to talk about actions completed before the present time. Time not important
• Present perfect is used to indicate an activity completed in immediate past but indefinite
• Present perfect is used to talk about an action completed on a present period of time
• Present perfect is used to describe the number of times you've done something
• Present perfect progressive is used to describe actions that began in the past and continue in the present
• Present perfect progressive is used to talk about habits that began in the past and continue to the present
• Present perfect progressive is used to describe actions that are going on during a present incomplete period of time
• Present perfect progressive is used to describe actions that may have finished or may have still be going on
• Present perfect progressive is used to talk about actions that annoy, anger or are demanded by the speaker
• Simple past is used to talk about past actions with no connection to the present
• Simple present is used to describe past time
• Simple past is used to talk about past habitual actions
• Simple past are used in dependant clauses of hypotetitical meaning
• Simple past is used in everyday conversation to refer to the present
• Past progressive is used to talk about a past activity and it's duration
• Past progressive is used to talk about actions repeated over a limited period of past time
• Past progressive is used to talk about actions repeated or sporadic in the past plus annoyance
• Past progressive is used to give the background to a narration
• Past perfect is used to talk to past of previous past
• Past perfect is used to talk about incomplete past of a previous past action
• Past perfect is used to describe an action that started and finished in the past with past results
• Past perfect is used with superlatives
• Past perfect progressive is used to talk about past actions focusing on duration
• Past perfect progressive is used to describe an action which lasted for some time in the past and whose duration caused results on a later past