Introduction to Questions
In English grammar, a question (or interrogative sentence) is a sentence used to request information, seek confirmation, or make requests.
Forming questions in English is highly structured and usually involves a process called subject-auxiliary inversion, where the helping verb is placed before the subject.
1. The Core Rule: Subject-Auxiliary Inversion
In positive statements, the subject comes before the verb:
- Statement: She is a doctor.
- Statement: They can swim.
To form a question, we invert (swap) the position of the subject and the first auxiliary verb or verb to be:
- Question: Is she a doctor?
- Question: Can they swim?
If a statement does not contain an auxiliary verb (such as in the Simple Present or Simple Past tenses), we must introduce the auxiliary verb do, does, or did to form the inversion.
- Statement: You speak English.
Question: Do you speak English?
2. Types of Questions
English questions are divided into several distinct categories based on their function and structure, which we will explore page-by-page:
- Yes/No Questions: Questions that can be answered with a simple “yes” or “no”, formed by placing the auxiliary verb before the subject.
- WH- Questions: Open-ended questions starting with question words (Who, What, Where, When, Why, Which, Whose, How).
- Subject & Object Questions: Understanding the structural difference when asking about the performer of an action vs. the receiver of an action.
- Question Tags: Short questions attached to the end of statements to seek agreement or confirmation (e.g., isn’t it?, do you?).
- Indirect Questions: Polite, embedded questions used in formal social contexts (e.g., Do you know where…?).
Let’s begin by exploring the first type: Yes/No Questions, to learn the fundamental structure of interrogatives in English.