Before learning how to compare Present Perfect and Past Simple, students should understand the following:

🔹 1. Present Perfect basics:
They should know how to form it using have/has + past participle, and understand that it is used for actions related to the present (e.g., experiences, recent actions, actions that started in the past and continue now).
Examples:

• I have visited Paris.

• She has lived here for five years.
  
  

🔹 2. Past Simple basics:
Students should know how to form the Past Simple with regular verbs (-ed) and memorize irregular verbs. It’s used for actions that happened at a specific time in the past and are now finished.
Examples:

• I visited Paris in 2020.

• She lived there last year.
  
  

🔹 3. Past participles vs. past forms:
They need to be able to tell the difference between the simple past and the past participle of irregular verbs.
Examples:

• go (past: went / past participle: gone)

• see (past: saw / past participle: seen)
  
  

🔹 4. Time expressions:
Students should recognize common time markers such as:

• Present Perfect: ever, never, just, already, yet, for, since, recently.

• Past Simple: yesterday, last week, in 2010, two days ago, when I was a child, etc...

Compare:

• I have read that book. (No specific time – experience)

• I’ve visited London 3 times. (No specific time – experience)
  
  

• I read that book last summer. (Specific time – completed)

• I visited London last year.  (Specific time – completed)