Breakdown of Я случайно проглотил горькую таблетку.
Questions & Answers about Я случайно проглотил горькую таблетку.
Проглотил is the masculine singular past tense, perfective form of проглотить (to swallow down).
Russian past tense agrees with the gender and number of the subject:
- Masculine singular: я случайно проглотил горькую таблетку (man speaking)
- Feminine singular: я случайно проглотила горькую таблетку (woman speaking)
- Neuter singular (for neuter subjects): лекарство случайно проглотило таблетку (artificial example)
- Plural (any gender mix):
- мы случайно проглотили горькую таблетку – we accidentally swallowed a bitter pill
- они случайно проглотили горькую таблетку – they accidentally swallowed a bitter pill
Таблетка is the nominative form (dictionary form), used for the subject of the sentence.
Here, таблетку is the direct object of the verb проглотил, so it must be in the accusative case.
For feminine nouns ending in -а in the nominative, the accusative singular usually changes -а → -у:
- Nominative (subject): Таблетка горькая. – The pill is bitter.
- Accusative (object): Я проглотил таблетку. – I swallowed a pill.
So таблетка → таблетку because it is what was swallowed.