Breakdown of Портной сделал ровные стежки и застрочил карман.
Questions & Answers about Портной сделал ровные стежки и застрочил карман.
Портной means tailor, and here it is in the nominative singular, because it is the subject of the sentence.
The ending -ой is just part of this word’s normal dictionary form: портно́й. It looks a bit like an adjective ending, but in this sentence it functions as a noun meaning a person.
Both are past tense, masculine, singular verb forms.
In Russian, past-tense verbs in the singular agree with the subject in gender:
- masculine: сделал
- feminine: сделала
- neuter: сделало
Since портной is masculine, the sentence uses сделал and застрочил.