How the word "день" is translated into English
Какой сегодня день?
What day is it today?
Я работаю весь день.
I work all day.
Это был трудный день.
It was a hard day.
"день" is in the lesson "Time 1" (Level 1), along with 9 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.
