

Неприлично зевать на совещании.
It's rude to yawn in a meeting.
Почему ты всё время зеваешь?
Why do you keep yawning?
Он зевал весь фильм, потому что не выспался.
He yawned through the whole movie because he hadn't gotten enough sleep.
"зевать" is in the lesson "Verbs 18" (Level 30), along with 11 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.