Questions & Answers about Oj, jag gjorde ett misstag!
Oj is an exclamation, like oh!, oops!, or whoops! in English.
In this sentence, it adds an emotional reaction: surprise, embarrassment, or sudden realization.
So Oj, jag gjorde ett misstag! feels like:
- Oops, I made a mistake!
- Oh no, I made a mistake!
You can leave Oj out if you just want the plain statement:
- Jag gjorde ett misstag. = I made a mistake.
Because gjorde is the past tense of göra (to do / to make).
- göra = infinitive, to do / to make
- gör = present tense, do / does / am doing / is doing
- gjorde = past tense, did / made
So:
- Jag gör ett misstag. = I am making a mistake / I make a mistake
- Jag gjorde ett misstag. = I made a mistake
This verb is irregular, so you just have to learn that göra becomes gjorde in the past.