Короткий пересказ на английском:
The Maslenitsa carnival, also called Blini Week, is a festival in the heart of Moscow. It features parades, fireworks, open-air theatre performances, and plenty of food. It takes place around the end of February to celebrate the end of winter and the beginning of spring. People eat blini (pancakes) because they symbolize the sun—round, golden, and warm. The carnival week ends with a big bonfire to say goodbye to winter.
Если нужно адаптировать под конкретный уровень или класс, скажи, и я подстрою стиль и сложность.