Present Perfect vs. Simple Past: The Complete Guide

In German, the Perfekt and Praeteritum are often interchangeable -- you can say 'Ich habe gegessen' or 'Ich ass' with little difference in meaning. In English, however, the present perfect has a clear function: it connects the past to the present. It is used for experiences, ongoing actions, and events with current relevance. The simple past only describes completed actions.

'Yesterday' refers to a specific, completed point in time. The present perfect is used for actions without a concrete time reference or whose effect reaches into the present. As soon as you mention a specific time like 'yesterday', 'last week', or 'in 2020', you cut the connection to the present -- and must use the simple past: 'I went to the store yesterday.'

'Have been to' means someone visited a place and returned. It expresses an experience: 'I have been to Japan twice' -- I went there but I'm back now. 'Have gone to' means someone went to a place and is still there: 'She has gone to the office' -- she's at the office and hasn't returned. Memory trick: 'Been' = back, 'Gone' = gone.

'Since' is used with a specific point in time: since Monday, since 2020, since I was a child. 'For' is used with a duration: for two hours, for three years, for a long time. Both take the present perfect when the action continues to now. A common mistake: 'since three years' is WRONG -- correct is 'for three years'. Remember: 'since' = starting point, 'for' = duration.

Not always. The present perfect simple emphasises the result: 'I have written three emails' (result: three emails are done). The present perfect continuous emphasises duration or activity: 'I have been writing emails all morning' (emphasis: busy the whole time). With state verbs like 'know', 'believe', 'like', and 'own', always use the simple form: 'I have known her for years', not 'I have been knowing her'.

The most important irregular forms: be-was/were-been, go-went-gone, see-saw-seen, do-did-done, have-had-had, make-made-made, take-took-taken, write-wrote-written, speak-spoke-spoken, eat-ate-eaten, give-gave-given, come-came-come, know-knew-known, get-got-got/gotten. Careful: Don't confuse simple past and past participle! 'I have went' is WRONG -- correct: 'I have gone'.