This video explains the difference between the Russian equivalents of the question word “why”: почему, зачем, отчего. It shows plenty of examples in different context and some useful expressions for everyday usage.

This video discusses the different meanings of the English preposition “for” and associates these meanings with the corresponding Russian prepositions. Includes enough examples in context.

This video explains the difference between the confusing ТОТ ЖЕ and ТАКОЙ ЖЕ. It includes plenty of examples and some practice.