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Study the information about the past tenses. Remember them.
  
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Tense
Affirmative/negative/
question
Use
Signal words
Past simple
 
Form: [verb+ed] or irregular verbs
 
A: He spoke
N: He did not speak.
Q: Did he speak?
  • Actions in the past taking place once, never or several times.
  • Action 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-sentences' type II.
Past continuous
Form: [was/were + present participle]
 
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, from____to____yesterday,
the whole evening
Past perfect
 
Form: [had + past participle]
 
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 the past perfect progressive.
  • Putting emphasis only on the fact (not the duration).
Already, just, never, not yet, once, until that day, 'if-sentences' type III, by the time
Past perfect continuous
Form: [had + been + present participle]
 
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 the past perfect.
  • Putting emphasis on the duration or course of an action.
For, since, the whole day, all day, for 20 minutes, for 3 hours.
Example:
There was a wonderful film on TV yesterday. (the past simple)
 
We were discussing many things from 5 to 6 yesterday. (the past continuous)
 
I had read this biik by 4 pm yesterday. (the past perfect)
 
We were tired. We had been running for 2 hours. (the past perfect continuous)
Reference:
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