Zaboravila sam svoj PIN.

to be

Breakdown of Zaboravila sam svoj PIN.

• zaboraviti: to forget
• svoj: my
• PIN: the card's personal identification number

Questions & Answers about Zaboravila sam svoj PIN.

Why does zaboravila end in -la?

Because Serbian past tense agrees with the speaker’s gender and number.

• Zaboravila sam = I forgot said by a woman
• Zaboravio sam = I forgot said by a man

This tense is built with:

• the auxiliary sam (am)
• plus the past participle form of the verb (zaboravila / zaboravio)

So the ending -la tells you the speaker is feminine singular.

Why is sam after zaboravila instead of before it?

Because sam is a clitic, and Serbian clitics usually go in the second position of the sentence or clause.

So:

• Zaboravila sam svoj PIN. = very natural
• Ja sam zaboravila svoj PIN. = also correct, with ja added for emphasis

What usually does not happen in standard Serbian is starting the sentence with sam by itself.

So the order here is normal and idiomatic.

Why is there no ja in the sentence?

Serbian often omits subject pronouns when they are already clear from the verb.

In Zaboravila sam, you already know: