The short, practical answer is that Russian uses several words depending on context, but the most common and versatile equivalent for the English conjunction "if" in conditional and indirect question clauses is "если" (pronounced "yes-li"), which covers situations like "if it rains" or "I wonder if he is coming". Another option is "у́чит," which is more literary and often appears in formal or older written styles, especially in legal or philosophical texts, whereas in everyday speech native speakers almost always prefer "если" because it sounds natural and clear. You will also encounter the combination "если бы" ("yes-li by") when forming unreal past conditions or polite requests, as in "если бы я знал" meaning "if I had known," showing how the basic word "если" adapts with particles to express more nuanced timing and mood. To choose the right form, first identify whether you are introducing a real condition in the present or future, in which case "если" is appropriate, or an unreal or hypothetical situation in the past, where "если бы" is usually what you need, and this distinction matters because using the wrong mood can confuse listeners about whether you are describing something actual or purely imaginary. From a learning perspective, it helps to treat "если" as the default word for "if" in most conversational and many written contexts, and to practice simple sentences such as "если сегодня дождь, я не пойду" meaning "if it rains today, I will not go," so that you build intuition for how the word fits into the sentence structure and how the stress on the syllable can shift depending on whether the phrase is a straightforward condition or a more speculative "if only" wish. Common mistakes among learners include overusing the more dramatic or archaic "у́чит" in casual speech, which can sound stilted or overly formal, and confusing word order, such as putting the conditional phrase at the end of the sentence in a way that obscures the connection to the main clause, so it is wise to keep the pattern of condition first, result second until you are comfortable with more flexible styles. In real usage, you will notice that Russian speakers often shorten "если" in rapid speech, and in some regional dialects slightly different particles or intonation patterns may appear, yet the standard written and broadcast language remains very consistent, which means that focusing on the canonical forms used in news, literature, and official communication will serve you well. As you progress, pay attention to how the word pairs with verbs of perception, thought, and emotion, because in clauses like "I do not know if he is here," the word "если" still governs the verb mood and may require a shift to indirect question format, and mastering these subtleties will make your conditionals and questions sound more idiomatic and less like a direct translation from English. Taken together, these points show that the core answer to "how do you say if in Russian" is primarily "если" for everyday conditions and questions, supported by "если бы" for hypothetical past situations, and that understanding when to use each form, how to place it in the sentence, and how native speakers actually speak will give you the confidence to handle both simple instructions and more complex reasoning in real conversations or written texts.
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