Every conversation, every investigation, and every discovery starts with a question. To ask questions in English, we use a special set of tools called interrogative words. These are the words that signal we're looking for information.

Think of them as little keys that unlock specific pieces of information. If you want to know about a person, you use one key. If you need to know a time or place, you use different keys. They usually appear at the beginning of a sentence, immediately telling the listener that a question is coming.

Let's meet the most common interrogative words. They are sometimes called the '5 Ws and an H'.

Each of these words has a specific job. Understanding what each one asks for is the first step to forming clear, effective questions.

Look at how they work in simple sentences:

• Who is the teacher?
• What is for dinner?
• Where is the library?
• When does the movie start?
• Why is the sky blue?
• How do you bake a cake?

In each case, the interrogative word goes right at the start. This structure is a basic pattern for asking for information in English. It sets up the expectation for a certain kind of answer, whether it's a person, a place, a reason, or a process.

While these words often start the question, they can sometimes appear in other positions, but we will explore those more complex structures later. For now, mastering this basic toolkit is the goal. These six words are the foundation of curiosity in the English language.

Now that you've met the basic interrogative words, you're ready to start asking more precise questions. Next, we'll take a closer look at one of the most powerful question words: 'why'.