

По субботам я играю в теннис.
On Saturdays I play tennis.
Мама не любит смотреть теннис.
Mom doesn't like watching tennis.
Теннис — мой любимый вид спорта.
Tennis is my favorite sport.
"теннис" is in the lesson "Sports 2" (Level 28), along with 15 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.