This is an introduction on information questions, also known as wh- questions. These are some of the most important tools in the English language. They are the questions we use to get specific details and information, moving beyond a simple "yes" or "no" answer. Being able to ask and answer them correctly is a crucial step toward becoming a more confident and fluent English speaker.
The Six Key Wh- Words
Let's begin by reviewing the main words we use to ask these questions.
- Who: Asks about a person or people.
Example: Who is the President of the United States?
- What: Asks about a thing, an idea, or an action.
Example: What are you reading?
Example: What type of book do you like?
- Where: Asks about a place or location.
Example: Where is the library?
- When: Asks about a time, a day, or a date.
Example: When does the movie start?
- Why: Asks for a reason or an explanation.
Example: Why are you studying English?
- How: Asks about the way something is done, a condition, or a quality.
Example: How do you get to school?
Different Structures for Information Questions
Now, let's explore the different structures you'll use to form these questions correctly.
1. The Simple Structure (Subject Questions)
A subject question is when the "wh- word" is the subject of the sentence. This means the question word itself is performing the action. Because of this, we do not need an auxiliary verb (like do, does, or did). The structure is very simple.
Structure: `Wh- word` + `verb` + `rest of the sentence`
- Who broke the window? (The person who broke the window is unknown, so "who" is the subject.)
- What made that loud noise? (The thing that made the noise is unknown, so "what" is the subject.)
2. The Common Structure (Object Questions and Other Questions)
An object question is when the "wh- word" is the object of the verb. It receives the action, and the person or thing performing the action (the subject) is already known. This is the most common type of information question. It requires an auxiliary verb.
Structure: `Wh- word` + `auxiliary verb` + `subject` + `main verb` + `rest of the sentence`
- Who did you call last night? (You performed the action of calling; "who" received the action.)
- What are they watching on TV? (They are performing the action of watching; "what" is receiving the action.)
- What type of property do you want? (You are performing the action of wanting; "what type of property" is the object.)
- Where is the library?
- When do you want to buy the house?
- Why do you choose this location?
3. Questions with Prepositions
Many questions require a preposition to be complete. The preposition can go at the end of the question, which is very common in spoken and informal English, or at the beginning for more formal situations.
Common Structure (Preposition at the end): `Wh- word` + `auxiliary verb` + `subject` + `main verb` + `preposition`
- Who are you talking to?
- What are you looking for?
Formal Structure (Preposition at the beginning): `Preposition` + `Wh- word` + `auxiliary verb` + `subject` + `main verb`
- To whom are you talking? (Note: "Whom" is the formal version of "who" used when it is the object of a verb or preposition.)
- For what are you listening?
4. The Many Uses of "How"
The word "how" is incredibly versatile. We often combine it with adjectives and adverbs to ask about specific details.
- How + Adjective (e.g., how big, how old, how tall)
How old is your brother?
How big is your new apartment?
- How + much/many (for quantity)
How many students are in the class? (Use "many" for countable nouns like students.)
How much money do you have? (Use "much" for uncountable nouns like money.)
- How + Adverb (e.g., how often, how quickly)
How often do you go to the gym?
How quickly did you learn English?
Summary and Practice
To summarize, the key to mastering information questions is to pay attention to the word order and whether you need an auxiliary verb.
- For subject questions, the structure is simple: `Wh- word` + `verb`.
- For object questions, you need an auxiliary verb: `Wh- word` + `auxiliary verb` + `subject` + `main verb`.
- Remember that "how" is often combined with other words to ask very specific questions.