Question 1

When do I use Present Perfect?

Accepted Answer

Use Present Perfect for life experiences (ever/never), recent past actions (just/already/yet), and unfinished time periods (today, this week).

Question 2

When do I use Past Simple?

Accepted Answer

Use Past Simple for finished actions at a specific past time (yesterday, last year, in 2010, when I was a child).

Question 3

What is the difference between 'I went' and 'I have been'?

Accepted Answer

'I went' refers to a specific trip in the past. 'I have been' means you have the experience of visiting that place, at any time in your life.

Question 4

Can I say 'I have been to London last year'?

Accepted Answer

No. With 'last year' you must use Past Simple: 'I went to London last year'.

Question 5

What's the most common mistake with these tenses?

Accepted Answer

Using Present Perfect with a specific past time expression (e.g., 'I have seen him yesterday').

Question 6

How do I transform a sentence?

Accepted Answer

Change the time expression or verb form to match the new meaning while keeping the core idea.

Question 7

Can I ask about her past trips?

Accepted Answer

Yes, use Past Simple questions like 'Where did you go last year?'

Question 8

How will AI correct my writing?

Accepted Answer

The AI will check if you used the correct tense for finished vs unfinished time and give simple suggestions.

Present Perfect vs Past Simple: A Traveller's Story – Grammar B1