1. Past
1.1. Simple
1.1.1. Structure
1.1.1.1. -
1.1.1.1.1. He didn't hear the telephone.
1.1.1.1.2. subject + auxiliary verb (did) + negation + verb(infinitive) + complement.
1.1.1.2. +
1.1.1.2.1. I abandoned the school yesterday.
1.1.1.2.2. subject + verb (in past form) + complement.
1.1.1.3. ?
1.1.1.3.1. Did you have dinner last night?
1.1.1.3.2. Auxiliary verb (did) + subject + verb(infinitive) + complement + ?.
1.1.2. When I will use it?
1.1.2.1. * past action
1.1.2.1.1. I ate at lunchtime
1.1.2.2. * past habit / repeated action
1.1.2.2.1. I played the violin when I was young
1.2. Continuous
1.2.1. Structure
1.2.1.1. -
1.2.1.2. +
1.2.1.2.1. She was writing a letter when he called.
1.2.1.3. ?
1.2.2. When I will use it?
1.2.2.1. * on-going past action (if interrupted past simple follows)
1.2.2.1.1. I was eating when she arrived
1.2.2.2. parallel actions
1.2.2.2.1. I was writing while she was dictating
1.3. Perfect
1.3.1. Structure
1.3.1.1. -
1.3.1.2. +
1.3.1.2.1. She had written the letter by the time he called.
1.3.1.3. ?
1.3.2. When I will use it?
1.3.2.1. * completed past action before 2nd past action (in past simple)
1.3.2.1.1. I had eaten before she arrived
1.3.2.2. * duration of completed action
1.3.2.2.1. I had waited for 2 hours before he arrived
1.4. Perfect Continuous
1.4.1. Structure
1.4.1.1. -
1.4.1.2. +
1.4.1.2.1. She had been writing letters for 2 hours before he called.
1.4.1.3. ?
1.4.2. When I will use it?
1.4.2.1. * interrupted on-going past action (past simple follows)
1.4.2.1.1. I had been eating when she arrived
2. Present
2.1. Simple
2.1.1. Structure
2.1.1.1. -
2.1.1.2. +
2.1.1.2.1. She writes a letter every day.
2.1.1.3. ?
2.1.2. When I will use it?
2.1.2.1. * habit / repeated action
2.1.2.1.1. I eat salad every day
2.1.2.2. * facts
2.1.2.2.1. The sun rises
2.1.2.3. * schedule future event
2.1.2.3.1. My plane lands at 11:20
2.2. Continuous
2.2.1. Structure
2.2.1.1. -
2.2.1.2. +
2.2.1.2.1. She is writing a letter.
2.2.1.3. ?
2.2.2. When I will use it?
2.2.2.1. * action happening right now
2.2.2.1.1. I am eating my lunch
2.2.2.2. * planned future action
2.2.2.2.1. I am going out toning
2.3. Perfect
2.3.1. Structure
2.3.1.1. -
2.3.1.2. +
2.3.1.2.1. She has written a letter.
2.3.1.3. ?
2.3.2. When I will use it?
2.3.2.1. * past action
2.3.2.1.1. I have eaten squid twice
2.3.2.2. * duration - from past to now
2.3.2.2.1. I have lived here since 2010
2.4. Perfect Continuous
2.4.1. Structure
2.4.1.1. -
2.4.1.2. +
2.4.1.2.1. She has been writing letters for 2 hours.
2.4.1.3. ?
2.4.2. When I will use it?
2.4.2.1. * action started in the past continuing to now
2.4.2.1.1. I have been eating cake all day
2.4.2.2. * duration -from past to now
2.4.2.2.1. I have been working here for 3 years
3. Future
3.1. Simple
3.1.1. Structure
3.1.1.1. -
3.1.1.2. +
3.1.1.2.1. She will write a letter later.
3.1.1.3. ?
3.1.2. When I will use it?
3.1.2.1. * future action
3.1.2.1.1. I will eat at lunchtime
3.2. Continuous
3.2.1. Structure
3.2.1.1. -
3.2.1.2. +
3.2.1.2.1. She will be writing letters when he calls.
3.2.1.3. ?
3.2.2. When I will use it?
3.2.2.1. * on-going future action (if interrupted present simple tense follows)
3.2.2.1.1. I will be eating lunch when she arrives
3.3. Perfect
3.3.1. Structure
3.3.1.1. -
3.3.1.2. +
3.3.1.2.1. She will have written many letters by the time he calls.
3.3.1.3. ?
3.3.2. When I will use it?
3.3.2.1. * completed future action before a 2nd action (2nd verb in the present simple tense)
3.3.2.1.1. I will have eaten lunch when she arrives
3.4. Perfect Continuous
3.4.1. Structure
3.4.1.1. -
3.4.1.2. +
3.4.1.2.1. She will have been writing letters for 2 hours by the time he calls.
3.4.1.3. ?
3.4.2. When I will use it?
3.4.2.1. * duration measured at a time in the future
3.4.2.1.1. I will have been eating for 10 minutes