Teach the grammar point: Yes/No questions and short answers using the verbs: like, want, need, and have. The target audience is beginner learners of English as a second language.
视频信息
答案文本
视频字幕
Welcome to our lesson on Yes/No questions and short answers. Yes/No questions are questions that can be answered with 'Yes' or 'No'. To form these questions with verbs like 'like', 'want', 'need', and 'have', we use helper words 'Do' or 'Does' at the beginning. Use 'Do' with the subjects I, you, we, and they. Use 'Does' with he, she, and it. The structure is: Do or Does, followed by the subject, then the verb, and the rest of the question. For example: 'Do you like pizza?' The short answers would be 'Yes, I do' or 'No, I don't'.
In this part, we'll focus on using 'Do' with the subjects 'I', 'you', 'we', and 'they'. When forming Yes/No questions with these subjects, we always use 'Do' at the beginning of the question. For short answers, we use 'Yes' or 'No', followed by the subject and either 'do' for positive answers or 'don't' for negative answers. Let's look at some examples: 'Do you like coffee?' The short answers would be 'Yes, I do' or 'No, I don't'. Another example: 'Do we need more time?' The answers would be 'Yes, we do' or 'No, we don't'. And finally: 'Do they want to join us?' The answers would be 'Yes, they do' or 'No, they don't'. Notice that the main verb never changes form in the question or the answer.
Now, let's look at using 'Does' with the subjects 'he', 'she', and 'it'. When forming Yes/No questions with these subjects, we always use 'Does' at the beginning of the question. For short answers, we use 'Yes' or 'No', followed by the subject and either 'does' for positive answers or 'doesn't' for negative answers. 'Doesn't' is short for 'does not'. Let's look at some examples: 'Does he have a car?' The short answers would be 'Yes, he does' or 'No, he doesn't'. Another example: 'Does she want coffee?' The answers would be 'Yes, she does' or 'No, she doesn't'. And finally: 'Does it need batteries?' The answers would be 'Yes, it does' or 'No, it doesn't'. Notice that the main verb never changes form in the question or the answer, even though we use 'Does' instead of 'Do'.
Now let's look at how we can use different verbs in Yes/No questions. We can use verbs like 'like', 'want', 'need', and 'have' in these questions. There are some important rules to remember: First, the main verb never changes form in the question. Second, only the helper verb changes between 'Do' and 'Does'. Third, the subject determines which helper verb to use. Let's look at some examples with different verbs: With 'like': 'Do you like pizza?' and 'Does he like pizza?' With 'want': 'Do they want more time?' and 'Does she want more time?' With 'need': 'Do we need help?' and 'Does it need water?' And with 'have': 'Do you have a pen?' and 'Does he have a car?' Notice that in all these examples, the main verb stays in its base form, and only the helper verb changes based on the subject.
Let's summarize what we've learned about Yes/No questions and short answers. Yes/No questions can be answered with 'Yes' or 'No'. We use 'Do' with the subjects I, you, we, and they. We use 'Does' with the subjects he, she, and it. The main verb, whether it's 'like', 'want', 'need', or 'have', never changes form in the question. Short answers use the helper verb - 'do', 'does', 'don't', or 'doesn't'. For example, if the question is 'Do you like coffee?', the positive answer is 'Yes, I do' and the negative answer is 'No, I don't'. Remember that the structure of the question determines the structure of the answer. This pattern works for all Yes/No questions with the verbs 'like', 'want', 'need', and 'have'.