Nội dung lý thuyết
1. They want information from their customers to offer them the best services.
(Họ muốn thông tin từ khách hàng của họ để cung cấp cho khách hàng những dịch vụ tốt nhất.)
2. They want information about the satisfaction of their customers.
(Họ muốn thông tin về sự hài lòng của khách hàng của họ.)
Whether you’re asking general English questions or using wh- questions to dive deeper into a topic, knowing different types of questions and how to frame them can make conversations more engaging.
Yes/no questions are the simplest form of questions in English, requiring only a “yes” or “no” answer. These questions typically start with an auxiliary verb (such as “be,” “do,” or “have”) or a modal verb (like “can,” “should,” or “will”).
Type of question | Yes/No |
Usage tips |
When asking such a general question, use the appropriate rising intonation at the end of the sentence. |
Examples |
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Common mistakes | Incorrect word order Incorrect: You are coming to the party? Correct: Are you coming to the party?
Double negatives Incorrect: Don’t you have no money? Correct: Don’t you have any money? |
These questions are great for small talk or when you’re just getting to know someone. And they’re easy to form: just follow the structure “do/does + subject + base verb.” For example, “Do you like coffee?” or “Does she play tennis?”
Type of question | Yes/No + do/does |
Usage tips | After “do” or “does,” always use the base form of the main verb. With “does,” you don’t need to add “-s” to the ending of the main verb, as “does” already indicates third-person singular. |
Examples |
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Common mistakes | Not using the form “does” in the third-person singular Incorrect: Do he like school? Correct: Does he like school?
Adding -s to the main verb Incorrect: Does he works here? Correct: Does he work here? |
Wh- questions are used to gather detailed information. They begin with question words such as “who,” “what,” “when,” “where,” “why,” and “how.” For example, “What are you doing?” or “Where is the nearest station?” These questions help you get specific answers and engage in more meaningful conversations.
Type of question | Wh- questions |
Usage tips | Ensure the question word is appropriate for the information you seek. Follow the question word with the auxiliary or modal verb and then the subject and main verb. |
Examples |
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Common mistakes | Omitting the auxiliary verb Incorrect: “What he drinks?” Correct: “What does he drink?”
Using the wrong verb form after the auxiliary Incorrect: “Where did she went?” Correct: “Where did she go?”
Placing the subject before the verb, like in a statement Incorrect: “What you are doing?” Correct: “What are you doing?” |
These types of questions help you engage in more detailed conversations, gathering specific information about people, what they’re doing, or how. For instance, “Who is coming to the party?” “What is your favorite book?” or “How do you solve this problem?”
Type of question | What, who, how |
Usage tips |
When “who” acts as the subject of a question, don’t use do/does/did (e.g., “Who wrote this book?” is correct, but “Who did write this book?” isn’t). |
Examples |
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Common mistakes | Using “what” (which indicates an object) instead of “who” (which indicates a person) Incorrect: What is your teacher? Correct: Who is your teacher? |
If you need to gather specific information about timing and places, ask questions that start with “when” and “where.” Wh- questions with “when” ask about time (e.g., “When is your appointment?”) and questions with “where” inquire about location (e.g., “Where did you park the car?”).
Type of question | When, where |
Usage tips | If necessary, use prepositions for clarity, especially with “where” (e.g., “Where in the city do you live?” or “Where at the park will we meet?”). With “when,” adding extra detail can make the question clearer (e.g., “When exactly do we need to leave?”) |
Examples |
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Common mistakes | Using the words “time” and “location,” which aren’t necessary Incorrect: When time is the lesson? Correct: When is the lesson? |
“Why” is used to ask for a reason, such as “Why are you late?” The answer often includes “because” to introduce the reason, like “Because the traffic was heavy.”
These questions help you understand the motivations and explanations behind actions and events.
Type of question | Why — because |
Usage tips |
Though “because” is common, other connectors like “since” or “as” can make speech and writing more varied (e.g., “Since the meeting was rescheduled, I was late.”). |
Examples | Q: Why are you laughing?
Q: Why did he eat all the pizza?
Q: Why doesn’t she like dogs?
Q: Why do you want to go to the lake? A: Because I want to go swimming. |
Common mistakes | Using “what” in a question that expects a “because” answer Incorrect: What are you laughing? Correct: Why are you laughing? |
“Why + not” can be used to make offers and suggestions. Another way you can form these questions is with “why + do/does + not + verb” — it makes your request sound more inviting.
Type of question | Wh- questions: Offers and suggestions |
Usage tips | When making suggestions, include others by using “we” or “us” instead of “you.” For instance, “What can we do to improve this project?” |
Examples |
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Common mistakes | Not starting the question with “why not” Incorrect: Watch a movie why not if you’re bored? Correct: Why not watch a movie if you’re bored? |
“Whether (or not)” and “if” can be used to ask yes/no questions with multiple clauses to confirm information. Sometimes, they use an introductory clause like “Do you know…” or “Can I ask…” But the trickiest part is that “whether” and “if” aren’t really interchangeable. In fact, “whether” is typically preferred when discussing two distinct possibilities (“I don’t know whether it will rain today or tomorrow.”).
Type of question | Yes/No: Whether, if |
Usage tips | In multi-clause questions, maintain a consistent structure for clarity. For example, “I’m not sure whether he is available or if he has another commitment.” |
Examples |
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Common mistakes | Using an introductory phrase for “whether/if” questions Incorrect: If Sara is coming by train or driving? Correct: Do you know if Sara is coming by train or driving? |