Differences between the past simple and the present perfect tense

Differences between the past simple and the present perfect tense

1. Past simple

   • finished time
     • Yesterday
       • Last week
         • Last year
           • Ten years ago
             • The day before yesterday
               • Examples:
                 • When I was a child I liked to go to school
                 • I visited Germany five years ago.

2. Past Perfect

   • Unfinished Time
     • This week
       • This month
         • This year
           • The last few years
             • Today
   • Examples
     • This year I have read three books.

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