Subordinate clauses are very important for making complex sentences in Russian. Here are some easy tips to help you use them correctly:

1. What are Subordinate Clauses?
   A subordinate clause gives extra information, but it can't stand alone as a sentence. It usually starts with words like "что" (that), "поскольку" (since), "если" (if), and "когда" (when).

   • For example:
     "Я знаю, что ты придёшь."
     (I know that you will come.)

2. Where to Place Them:
   In Russian, subordinate clauses usually come after the main part of the sentence. But sometimes, they can come first if you want to make something sound more important.

   • For example:
     "Когда я пришёл, она уже ушла."
     (When I arrived, she had already left.)

   • Another way:
     "Она уже ушла, когда я пришёл."
     (She had already left when I arrived.)

3. Using Commas:
   Always put a comma before the subordinate clause if it starts the sentence or comes after the main part.

   • For example:
     "Я рад, что ты здесь."
     (I am glad that you are here.)

4. Combining Adjectives and Adverbs:
   Make sure to place these words correctly with the clauses. Adjectives usually go before the nouns they describe, while adverbs can be placed at different spots.

   • For example with an adjective:
     "У него есть книга, которая интересна."
     (He has a book that is interesting.)

   • For example with an adverb:
     "Он быстро ответил, когда я спросил."
     (He answered quickly when I asked.)

Try writing sentences with subordinate clauses to get better at Russian writing!