| tense |        Affirmative/Negative/Question |        Use |        Signal Words |      
            |          Simple Present        |                 A: He speaks.         N: He does not speak.         Q: Does he speak?        |                 - action in the present taking place once, never or several times
 - facts
 - actions taking place one after another
 - action set by a timetable or schedule
          |                 always, every …, never, normally, often, seldom, sometimes, usually if sentences type I (If I talk, …)        |      
            |          Present Progressive        |                 A: He is speaking.         N: He is not speaking.         Q: Is he speaking?        |                 - action taking place in the moment of speaking
 - action taking place only for a limited period of time
 - action arranged for the future
          |                 at the moment, just, just now, Listen!, Look!, now, right now        |      
            |          Simple Past        |                 A: He spoke.         N: He did not speak.         Q: Did he speak?        |                 - action in the past taking place once, never or several times
 - actions taking place one after another
 - action taking place in the middle of another action
          |                 yesterday, 2 minutes ago, in 1990, the other day, last Friday         if sentence type II (If I talked, …)        |      
            |          Past Progressive        |                 A: He was speaking.         N: He was not speaking.         Q: Was he speaking? |                 - action going on at a certain time in the past
 - actions taking place at the same time
 - action in the past that is interrupted by another action
          |                 when, while, as long as        |      
            |          Present Perfect Simple        |                 A: He has spoken.         N: He has not spoken.         Q: Has he spoken?        |                 - putting emphasis on the result
 - action that is still going on
 - action that stopped recently
 - finished action that has an influence on the present
 - action that has taken place once, never or several times before the moment of speaking
          |                 already, ever, just, never, not yet, so far, till now, up to now        |      
            |          Present Perfect Progressive        |                 A: He has been speaking.         N: He has not been speaking.         Q: Has he been speaking?        |                 - putting emphasis on the course or duration (not the result)
 - action that recently stopped or is still going on
 - finished action that influenced the present
          |                 all day, for 4 years, since 1993, how long?, the whole week        |      
            |          Past Perfect Simple        |                 A: He had spoken.         N: He had not spoken.         Q: Had he spoken?        |                 - action taking place before a certain time in the past
 - sometimes interchangeable with past perfect progressive
 - putting emphasis only on the fact (not the duration)
          |                 already, just, never, not yet, once, until that day         if sentence type III (If I had talked, …)        |      
            |          Past Perfect Progressive        |                 A: He had been speaking.         N: He had not been speaking.         Q: Had he been speaking?        |                 - action taking place before a certain time in the past
 - sometimes interchangeable with past perfect simple
 - putting emphasis on the duration or course of an action
          |                 for, since, the whole day, all day        |      
            |          Future I Simple        |                 A: He will speak.         N: He will not speak.         Q: Will he speak?        |                 - action in the future that cannot be influenced
 - spontaneous decision
 - assumption with regard to the future
          |                 in a year, next …, tomorrow         If-Satz Typ I (If you ask her, she will help you.)         assumption: I think, probably, we might …, perhaps        |      
            |          Future I Simple          (going to)         |                 A: He is going to speak.         N: He is not going to speak.         Q: Is he going to speak?        |                 - decision made for the future
 - conclusion with regard to the future
          |                 in one year, next week, tomorrow        |      
            |          Future I Progressive        |                 A: He will be speaking.         N: He will not be speaking.         Q: Will he be speaking?        |                 - action that is going on at a certain time in the future
 - action that is sure to happen in the near future
          |                 in one year, next week, tomorrow        |      
            |          Future II Simple        |                 A: He will have spoken.         N: He will not have spoken.         Q: Will he have spoken?        |                 - action that will be finished at a certain time in the future
          |                 by Monday, in a week        |      
            |          Future II Progressive        |                 A: He will have been speaking.         N: He will not have been speaking.         Q: Will he have been speaking?        |                 - action taking place before a certain time in the future
 - putting emphasis on the course of an action
          |                 for …, the last couple of hours, all day long        |      
            |          Conditional I Simple        |                 A: He would speak.         N: He would not speak.         Q: Would he speak? |                 - action that might take place
          |        if sentences type II (If I were you, I would go home.)        |      
            |          Conditional I Progressive        |                 A: He would be speaking.         N: He would not be speaking.         Q: Would he be speaking?        |                 - action that might take place
 - putting emphasis on the  course / duration of the action
          |          |      
            |          Conditional II Simple        |                 A: He would have spoken.         N: He would not have spoken.         Q: Would he have spoken? |                 - action that might have taken place in the past
          |                 if sentences type III (If I had seen that, I would have helped.)        |      
            |          Conditional II Progressive        |                 A: He would have been speaking.         N: He would not have been speaking.         Q: Would he have been speaking?        |                 - action that might have taken place in the past
 - puts emphasis on the course / duration of the action
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