In Russian, choosing between "этот" (this) and "некоторый" (some) depends on how specific you want to be. Here are some easy points to help you understand when to use each word:

1. Using "этот"

• What it means: This word is for something specific that the person you're talking to recognizes.
• Example:
  • "Этот стол" means "This table." It refers to a particular table.

2. Using "некоторый"

• What it means: This word is for something that is not specific. It usually means "some" or "certain."
• Example:
  • "Некоторый стол" means "Some table." It can be any table, not a specific one.

3. Noun Genders and Changes

• In Russian, nouns can be masculine, feminine, or neuter. They change based on what role they play in a sentence.
  • For example, "этот" changes depending on the gender:
    • "этот" is for masculine,
    • "эта" is for feminine,
    • "это" is for neuter.

4. Basic Verb Conjugation

• In the present tense, regular verbs follow a pattern. For example:
  • "Я люблю" means "I love."
  • "Ты любишь" means "You love."

5. Making Nouns Plural

• To make nouns plural, you usually change the ending of the word.
  • For instance, "стол" (table) becomes "столы" (tables).

6. Matching Adjectives and Nouns

• Adjectives (words that describe) must match the noun in gender, number, and case.
• Example:
  • "Этот хороший стол" means "This good table."
  • "Эта хорошая книга" means "This good book."

By following these simple grammar tips, you'll know when to use "этот" or "некоторый." This will help you speak more clearly in Russian!