прошлогодней

In a sentence

• Я нашёл записку в прошлогодней книге.

  I found a note in last year's book.

  In this sentence, 'прошлогодней' is used as an adjective in the instrumental case, describing the noun 'книге' (book) to express that the book is from the previous year.

• Прошлогодней зимой было много снега.

  Last year's winter had a lot of snow.

  Here, 'прошлогодней' is an adjective in the instrumental case, modifying the noun 'зимой' (winter), referring to the winter from the previous year.

• Я вспомнил разговор с прошлогодней встречи.

  I recalled a conversation from last year's meeting.

  In this example, 'прошлогодней' functions as an adjective in the genitive case, qualifying the noun 'встречи' (meeting), to indicate that the meeting occurred in the previous year.