Questions & Answers about Compré un par de botas.
Compré is the first-person singular preterite of comprar.
- compré = I bought
- It is used for a completed action in the past.
In Spain, the pretérito indefinido (usually called the preterite in English-learning contexts) is very common for actions seen as finished:
- Compré un par de botas. = a finished past action
A learner often compares it with compraba:
- compré = I bought / I did buy
- compraba = I was buying / I used to buy
So in this sentence, compré is the natural choice because it refers to one completed purchase.
In Spanish, subject pronouns are often left out because the verb ending already shows who is doing the action.
- compré already tells you the subject is I
- So yo compré is possible, but usually unnecessary
You would include yo only for emphasis, contrast, or clarity:
- Yo compré un par de botas, no Marta.
= I bought a pair of boots, not Marta.
Without emphasis, Compré un par de botas sounds completely natural.