Unit 5 语法：助动词讲义与练习2023-2024学年人教版七年级英语上册

助动词do 知识点 一、定义 助动词，顾名思义，就是帮助、协助动词的单词。在英语中，用来帮助实义动词完成某些语法功能，但它本身没有实际意义的词，叫做助动词。 二、分类 1.be (am, are, is, was, were) 2.do (do, does, did) 3.have (have, has, had) 三、助动词do 1.do的形式 肯定式：原形do、现在式的第三人称单数does、过去式did 否定式：don’t = do not doesn’t = does not didn’t = did not 2.do的基本用法 2.1 构成否定句 主语+助动词+not+实义动词+其它 (.) I don’t like watching TV. He doesn’t have breakfast every day. She didn’t go to school yesterday. 2.2 构成一般疑问句及简略答语 助动词+主语+实义动词+其它 (?) Do you like watching TV? Yes, I do.\No, I don’t. Does he have breakfast every day? Yes, he does.\No, he doesn’t. Did she go to school yesterday? Yes, she did.\No, she didn’t. 2.3 构成特殊疑问句 疑问词+助动词+主语+实义动词+其它 (?) How do you spell it in English? What does he like? Where did she go yesterday? 2.4 表示强调，加重语气，意为“务必”、“真的” Do come to my party. I do miss you very much. 3.含有助动词do的陈述句改为一般疑问句 看原句---句中没有be动词，考虑用助动词来辅助 看时态---若句子为一般现在时，则考虑do和does；若句子为一般过去时，则用did 看主语---若主语为单数，用第三人称单数does；若主语为I, you以及其它复数式，则用do 助动词置于句首并大写，其它部分照抄，句号改为问号（当原句的主语是第一人称时，改为一般疑问句时要把它改为第二人称；当原句主语为第三人称单数时，要注意把实义动词还原成动词原形） 助动词do 练习题 一、单项选择 1. What color _________ you like best?  A. do  B. does   C. are  2. What food _________ she like? A. does B. do C. is 3. Does she ________ apples or pears? A. like B. likes C. does like 4. I __________ miss you. A. do B. am C. does 5. _______ he want to be a teacher? A. Do B. Does C. Is 6. ---Do they want to go to the movie? ---______________. A. No, they aren’t B. Yes, they do C. Yes, they don’t 7. Which one _______ they need? A. are B. do C. does 8. ---Did you see a doctor last night? ---_____________. A. Yes, I did B. No, I don’t C. No, I did 9. My mom ____________ sleep well last night. A. doesn’t B. don’t C. didn’t 1