Present perfect vs past simple

We use the present perfect to:

• talk about life experiences.

• talk about an action that started in the past and continues up to the present.

• talk about an action that happened at an unspecified point in the past

• All of the above.

We use the past simple to talk about:

• life experiences.

• an action that happened at a specific time in the past and is now finished. ​

• future actions.

• Imaginary actions.

Time expressions for the present perfect:

• Yesterday, last week, last year...

• Already, yet, still...

• Tomorrow, next week, next year...

• Right now, currently, at the moment...

Time expressions for the past simple:

• Yesterday, last week, last year...

• Already, yet, still...

• Tomorrow, next week, next year...

• Right now, currently, at the moment...

I ______ English for three years. (I'm still doing it)

• have studied

• studied

• has study

• did study

I _____ French when I was in high school.

• have studied

• studied

• will studied

• studies

They ____ their homework one hour ago.

• finish

• will have finished

• has finished

• finished

He _____ Avatar three times!

• did see

• have seen

• has seen

• saw

We ____ go to the party last night.

• haven't gone

• didn't go

• didn't went

• has gone

She _____ to 50 countries. She is a tourist guide.

• is traveling

• traveled

• travels

• has traveled