You use the past simple:
To indicate that something happened in the past and is ready.
Often there is a time indicator in the sentence, like: yesterday, last week, two months ago, when I was younger, in 1995.
You form the past simple by adding '-ed' after the verb
Examples:
You form a question by using did + whole verb.
A negation is made by using didn't + whole verb.
Spelling:
If the verb ends on a consonant (medeklinker) + '-y', the '-y' changes in -ie:
But: when the verb ends on a vowel (klinker) + '-y', nothing changes; just add '-ed' after the '-y'
If the verb already ends on '-e', simply add '-d':
NB: double the last consonant (medeklinker) if there's a vowel (klinker) before it: