Breakdown of Со временем мне становится легче говорить по-русски.
Questions & Answers about Со временем мне становится легче говорить по-русски.
The preposition is basically с (with, from), but Russian has a special rule: before some consonant clusters, с becomes со to make pronunciation easier.
- с
- в → со временем
- с
- встречи → со встречи
- с
- мной → со мной
Saying с временем is not wrong phonologically, but the fixed expression meaning over time / as time goes by is almost always со временем. It’s a set phrase.