1)Present Simple vs Present Progressive: Use Present Simple for habits and facts (e.g., "I live in Kyiv"); Present Progressive for actions now (e.g., "I am writing now").
2)Comparative and Superlative Forms: Comparatives for two things (bigger than, more interesting than); Superlatives for the most (the biggest, the most beautiful).
3)Conditional Sentences Type 1: Real future conditions (If + Present Simple, will + infinitive, e.g., "If it rains, we will stay home").
4)Defining Relative Clauses: Use who/which/that/where to give essential information (e.g., "The man who lives next door...").
5)Present Perfect Simple vs Past Simple: Present Perfect for experiences/life up to now (have visited); Past Simple for finished past actions (visited last year).
6)Article "the": Use with specific things, unique items, superlatives, geographical names (e.g., the sun, the capital of Ukraine, the most difficult).