

Я живу вместе с сестрой.
I live with my sister.
Ты пойдёшь вместе с нами?
Will you come with us?
Я обедаю вместе с коллегами.
I have lunch with my colleagues.
"вместе с" is in the lesson "Prepositions" (Level 36), along with 12 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.