情态动词can、must、have to(含答案解析)-2024-2025学年七年级英语下册单元语法精讲精练(人教版2024)

中小学教育资源及组卷应用平台 2024-2025学年七年级英语下册单元语法精讲精练（人教版2024） 情态动词can、must、have to 一、情态动词can+动词原形 用法 示例 表示能力，意为“能；会” Tom can speak Chinese.Can you dance 表示请求或许可，意为“可以” Can we bring our phone to class Can you eat snacks in class 表示推测，意为“可能”，常用于否定句和疑问句中 Tom can’t be at home. 句式类型 句式结构 例句 肯定句 主语+can+动词原形+其他 Ann can play chess. 否定句 主语+can’t+动词原形+其他 Ann can’t play chess. 一般疑问句 Can+主语+动词原形+其他？肯定回答：Yes,主语+can否定回答：No,主语+can’t Can you put on your seat belt Yes, I can. No, I can’t. 特殊疑问句 特殊疑问词+can+主语+动词原形+其他？ --Who can sing in English in your class --Lily can. 二、情态动词must+动词原形 ①表示说话人的主观看法（主动），表示“必须、必要”。 ②否定：must not=mustn’t “禁止、千万不要” ③无人称和数的变化 ④句型结构：主语+must+动词原形+其他 eg: You must wait for your turn. ⑤以Must 开头的一般疑问句 否定回答不能用mustn’t 用needn’t、don’t have to、doesn’t have to eg: --Must I do my homework now 我必须现在做我的作业吗？ --Yes, you must./ No, you needn’t./ don’t have to. 三、情态动词have to+动词原形 ①表示客观需要，不得不，被逼无奈做某事 ②有人称、单复数变化 ③有动词时态变化 have/has/had to ④否定形式和疑问句需要借助助动词do 肯定句 主语+have/has/had to+动词原形+其他. She has to look after her mother at home. 否定句 主语+don’t/doesn’t/didn’t have to+v原形+其他. We don’t have to clean the room today. 一般疑问句 Do/Does/Did+主语+have to+v原形+其他？ --Does he have to make the bed now --Yes, he does./No, he doesn’t. 注意：情态动词后+动词原形。 情态动词can、must、have to专练 一、单项选择 1．—_____ I go out with my friend now, Dad —I’m afraid you _____ finish your homework first. A．Can; can B．Can; have to C．Must; have to 2．—Can we eat in the classroom —No, you _____. But you can eat in the dining hall. A．can’t B．mustn’t C．needn’t D．don’t 3．I _____ finish the difficult work in 2 days _____. A．can; at all B．can’t; at all C．will; in all D．won’t; in all 4．—What are the school rules —We _____ arrive late for class. A．don’t B．can’t C．aren’t D．doesn’t 5．Tom, you _____ talk loudly in the library, and you _____ be quiet. A．can; must B．can’t; mustn’t C．have to; must D．can’t; must 6．My father says I _____ play basketball after I finish my homework. A．can B．must C．need D．should 7．—_____ I eat in the classroom —No, you can’t. A．Do B．Can C．Am D．Does 8．—_____ I take some photos in the hall —No, you _____. A．Can; mustn’t B．Must; mustn’t C．Could; won’t 9．I _____ feed my dog many kinds of food, but I _____ give him chocolate. A．can; can’t B．must; mustn’t C．may; mustn’t D．can; must 10．—_____ I bring my mobile phone to school —No, you can’t. A．Must B．Do C．Can D．Need 11．—_____ I bring my mobile phone to school —No, you can’t. It’s not allowed. A．Must B．Do C．Can D．Need 12．—Mum, _____ we take our mobile phones to scho ... ...