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1. Past simple

1.1. We use past simple to describe finished actions or situations in the past.

1.1.1. Time expressions: yesterday, morning, in (year), etc.

2. Past continuous

2.1. We use the past continuous to talk about activities in progress at a moment in the past.

2.1.1. Time expressions: while, as, etc.

2.1.2. Form:

3. Past perfect

3.1. We use the past perfect to talk about actions that happenedbefore another actions in the past.

3.1.1. Time expressions: when, after, by, etc.

4. form:

5. Afirmative: Subject+had+V.P.P. Example: She had finished the exam.

6. Question: Had+subject+V.P.P. Example: Had you finished the exam?

7. Short answers: Yes,+subject+had. No,+subject+hadn't.. Example: Yes, she had. No, I hadn't.

8. Negative:  Subject+hadn't+V.P.P. Example: They hadn't finished exam.

9. form:

10. Afirmative: Subject+ V.S.P+Complement. Example: He worked yesterday.

11. Negative: Subject+ didn't+V.S.F+Complement. Example: I didn't work yesterday.

12. Question: Did+ subject+ V.S.F+Complement. Example: Did you work yesterday?

13. Short answers: Yes,+subject+did. No,+subject+didn't. Example: Yes, I did. No they didn't.

14. Afirmative: I/He/She/It+was+V+ing. You/They/We+were+V+ing. Example: I was going.       You were going.

15. Negative: I/He/She+wasn't+V+ing. You/We/They+weren't+V+ing. Example: I wasn't talking. I weren't talking.

16. Question: Was+I/She/He/It+V+ing. Were+You/We/They+V+ing. Example: Was I going?                 Were you going?

17. Short answers: Yes,+I/He/She/It+was. No,+I/She/He/It+wasn't.  Yes,+You/We/They+were. No,+You/We/They+weren't.