Understanding What Which Why and When in English Grammar

**Understanding "What", "Which", "Why", and "When" in English Grammar** In English, the interrogative words "what", "which", "why", and "when" are pivotal in formulating questions. Each serves a unique purpose, helping to extract specific types of information. Grasping their correct usage and differences is crucial for effective communication. ### 1. What are "What", "Which", "Why", and "When"? - **What**: Used to ask about things or activities. Example: **What** is your favorite book? - **Which**: Used to ask for a specific choice among a defined set of options. Example: **Which** dress do you prefer, the red or the blue one? - **Why**: Used to inquire about reasons or causes. Example: **Why** are you late? - **When**: Used to ask about time.