Unit 2 Stay Healthy 情态动词should could 和反身代词 (语法讲解+分层精练)-2025-2026学年人教版英语八年级下册

2026-02-05
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学段 初中
学科 英语
教材版本 初中英语人教版八年级下册
年级 八年级
章节 Grammar Focus
类型 学案-知识清单
知识点 -
使用场景 同步教学-单元练习
学年 2026-2027
地区(省份) 全国
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发布时间 2026-02-05
更新时间 2026-02-08
作者 栗子老师精品英语
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审核时间 2026-02-05
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Unit 2 Stay Healthy (情态动词should could和反身代词) (语法讲解+分层精练) 目 录 一、语法讲解 1 (一)用于提建议的情态动词:should could 1 1. should(表“应该”,语气较强,侧重责任、建议、劝告) 1 2. could(表“可以、不妨”,语气委婉、客气,侧重委婉建议,非过去式) 2 3. should vs could 区别 2 4. 重点与易错点 2 二、反身代词 2 1. 形式(人称对应) 2 2. 核心用法 2  3. 易错点 3 二、中考题型分层练习 3 (一)should/could 中考习题(15道) 3 (二)反身代词中考习题(15道) 4 一、语法讲解 (一)用于提建议的情态动词:should could 1. should(表“应该”,语气较强,侧重责任、建议、劝告) 肯定:主语+should+动词原形 例:You should study hard.(你应该努力学习。) 否定:主语+should not/shouldn't+动词原形 例:You shouldn't eat too much junk food.(你不应该吃太多垃圾食品。) 一般疑问:Should+主语+动词原形? 例:Should I help him?(我应该帮他吗?) 特殊疑问:疑问词+should+主语+动词原形? 例:What should I do now?(我现在该做什么?) 2. could(表“可以、不妨”,语气委婉、客气,侧重委婉建议,非过去式) 肯定:主语+could+动词原形 例:You could talk to your parents.(你可以和父母谈谈。) 否定:主语+could not/couldn't+动词原形 例:You couldn't copy others' homework.(你不可以抄别人作业。) 一般疑问:Could+主语+动词原形?(表委婉请求/建议) 例:Could I sit here?(我可以坐这儿吗?) 特殊疑问:疑问词+could+主语+动词原形? 例:How could I solve this problem?(我该怎么解决这个问题?) 3. should vs could 区别 should:建议更肯定、有“理应如此”的意味,语气偏强硬; could:建议更委婉、试探性,给对方留选择空间,语气更温和。 4. 重点与易错点 回答“Could I/you...?”时:提问用could表示礼貌,但肯定回答用can,否定回答用can't或sorry等。例如: — Could I use your pen? — Yes, you can. (不说 you could) should 的其他含义:除提建议外,还可表示“义务”(学生应该努力学习)或“推测”(他应该到了)。 二、反身代词 1. 形式(人称对应) 第一人称:myself(我自己)、ourselves(我们自己) 第二人称:yourself(你自己)、yourselves(你们自己) 第三人称:himself(他自己)、herself(她自己)、itself(它自己)、themselves(他们/她们/它们自己) 2. 核心用法 作宾语:主语发出的动作作用于自身,例:He hurt himself.(他伤到了自己。) 作同位语:强调“亲自、本人”,例:I did it myself.(我亲自做的。) 固定搭配:by oneself(独自)、enjoy oneself(玩得开心)、help oneself to(随便吃/用)、teach oneself(自学)  3. 易错点 指代一致:必须看清动作发出者是谁。例如: Believe in yourself (你自己). (主语是you) 不能单独作主语:反身代词不能独立充当句子的主语。 (误) Myself did it. (正) I myself did it. 我自己做的。 二、中考题型分层练习 (一)should/could 中考习题(15道) 1. You ______ listen to the teacher carefully in class.(should/could) 答案:should 解析:课堂认真听讲是责任,用should表“应该”,语气更强。 2. We ______ waste food. It's not polite.(shouldn't/couldn't) 答案:shouldn't 解析:浪费食物是不应该的,表责任否定,用shouldn't。 3. ______ I borrow your dictionary?(Should/Could) 答案:Could 解析:借东西表委婉请求,用could更礼貌。 4. You ______ try to finish the work today. It's important.(should/could) 答案:should 解析:工作重要,表明确建议,用should。 5. He ______ go out alone at night. It's dangerous.(shouldn't/couldn't) 答案:shouldn't 解析:夜晚独自外出危险,表劝告否定,用shouldn't。 6. ______ we go for a walk after dinner?(Should/Could) 答案:Could 解析:提散步建议,语气委婉,用could。 7. Students ______ follow the school rules.(should/could) 答案:should 解析:遵守校规是学生的责任,用should。 8. You ______ talk loudly in the library.(shouldn't/couldn't) 答案:shouldn't 解析:图书馆禁止大声喧哗,表责任否定,用shouldn't。 9. ______ I help you carry the box?(Should/Could) 答案:Could 解析:主动帮忙表委婉提议,用could。 10. She ______ ask the teacher for help if she has problems.(should/could) 答案:should 解析:有问题找老师是合理建议,用should。 11. You ______ spend too much time on computer games.(shouldn't/couldn't) 答案:shouldn't 解析:沉迷游戏不可取,表劝告否定,用shouldn't。 12. ______ we meet at the school gate tomorrow?(Should/Could) 答案:Could 解析:约定见面表委婉建议,用could。 13. Everyone ______ protect the environment.(should/could) 答案:should 解析:保护环境是每个人的责任,用should。 14. He ______ be late for the meeting. It's very important.(shouldn't/couldn't) 答案:shouldn't 解析:重要会议不能迟到,表责任否定,用shouldn't。 15. You ______ read more books to improve your English.(should/could) 答案:should 解析:多读书提升英语是明确建议,用should。 (二)反身代词中考习题(15道) 1. He taught ______ (he) English when he was young. 答案:himself 解析:teach oneself(自学),主语he对应反身代词himself。 2. We enjoyed ______ (we) at the party last night. 答案:ourselves 解析:enjoy oneself(玩得开心),主语we对应ourselves。 3. She can finish the work by ______ (she). 答案:herself 解析:by oneself(独自),主语she对应herself。 4. Help ______ (you) to some fruit, kids. 答案:yourselves 解析:help oneself to(随便吃),kids是复数,对应yourselves。 5. The little boy can dress ______ (he) now. 答案:himself 解析:dress oneself(自己穿衣服),主语he对应himself。 6. I did the homework all by ______ (I). 答案:myself 解析:by oneself(独自),主语I对应myself。 7. They built the house by ______ (they). 答案:themselves 解析:by oneself(独自),主语they对应themselves。 8. The cat washed ______ (it) after eating. 答案:itself 解析:主语cat(it)对应反身代词itself,表动作作用于自身。 9. You should look after ______ (you) when your parents are out. 答案:yourself 解析:look after oneself(照顾自己),主语you对应yourself。 10. She hurt ______ (she) when she fell off the bike. 答案:herself 解析:hurt oneself(伤到自己),主语she对应herself。 11. We should believe in ______ (we). 答案:ourselves 解析:believe in oneself(相信自己),主语we对应ourselves。 12. Help ______ (you) to some cakes, Tom. 答案:yourself 解析:help oneself to(随便吃),Tom是单数,对应yourself。 13. The old man can take care of ______ (he). 答案:himself 解析:take care of oneself(照顾自己),主语he对应himself。 14. They enjoyed ______ (they) in the park. 答案:themselves 解析:enjoy oneself(玩得开心),主语they对应themselves。 15. I will do it ______ (I) if you are busy. 答案:myself 解析:此处作同位语表“亲自”,主语I对应myself。 学科网(北京)股份有限公司 $ Unit 2 Stay Healthy (情态动词should could和反身代词) (语法讲解+分层精练) 目 录 一、语法讲解 1 (一)用于提建议的情态动词:should could 1 1. should(表“应该”,语气较强,侧重责任、建议、劝告) 1 2. could(表“可以、不妨”,语气委婉、客气,侧重委婉建议,非过去式) 2 3. should vs could 区别 2 4. 重点与易错点 2 二、反身代词 2 1. 形式(人称对应) 2 2. 核心用法 2  3. 易错点 3 二、中考题型分层练习 3 (一)should/could 中考习题(15道) 3 (二)反身代词中考习题(15道) 3 一、语法讲解 (一)用于提建议的情态动词:should could 1. should(表“应该”,语气较强,侧重责任、建议、劝告) 肯定:主语+should+动词原形 例:You should study hard.(你应该努力学习。) 否定:主语+should not/shouldn't+动词原形 例:You shouldn't eat too much junk food.(你不应该吃太多垃圾食品。) 一般疑问:Should+主语+动词原形? 例:Should I help him?(我应该帮他吗?) 特殊疑问:疑问词+should+主语+动词原形? 例:What should I do now?(我现在该做什么?) 2. could(表“可以、不妨”,语气委婉、客气,侧重委婉建议,非过去式) 肯定:主语+could+动词原形 例:You could talk to your parents.(你可以和父母谈谈。) 否定:主语+could not/couldn't+动词原形 例:You couldn't copy others' homework.(你不可以抄别人作业。) 一般疑问:Could+主语+动词原形?(表委婉请求/建议) 例:Could I sit here?(我可以坐这儿吗?) 特殊疑问:疑问词+could+主语+动词原形? 例:How could I solve this problem?(我该怎么解决这个问题?) 3. should vs could 区别 should:建议更肯定、有“理应如此”的意味,语气偏强硬; could:建议更委婉、试探性,给对方留选择空间,语气更温和。 4. 重点与易错点 回答“Could I/you...?”时:提问用could表示礼貌,但肯定回答用can,否定回答用can't或sorry等。例如: — Could I use your pen? — Yes, you can. (不说 you could) should 的其他含义:除提建议外,还可表示“义务”(学生应该努力学习)或“推测”(他应该到了)。 二、反身代词 1. 形式(人称对应) 第一人称:myself(我自己)、ourselves(我们自己) 第二人称:yourself(你自己)、yourselves(你们自己) 第三人称:himself(他自己)、herself(她自己)、itself(它自己)、themselves(他们/她们/它们自己) 2. 核心用法 作宾语:主语发出的动作作用于自身,例:He hurt himself.(他伤到了自己。) 作同位语:强调“亲自、本人”,例:I did it myself.(我亲自做的。) 固定搭配:by oneself(独自)、enjoy oneself(玩得开心)、help oneself to(随便吃/用)、teach oneself(自学)  3. 易错点 指代一致:必须看清动作发出者是谁。例如: Believe in yourself (你自己). (主语是you) 不能单独作主语:反身代词不能独立充当句子的主语。 (误) Myself did it. (正) I myself did it. 我自己做的。 二、中考题型分层练习 (一)should/could 中考习题(15道) 1. You ______ listen to the teacher carefully in class.(should/could) 2. We ______ waste food. It's not polite.(shouldn't/couldn't) 3. ______ I borrow your dictionary?(Should/Could) 4. You ______ try to finish the work today. It's important.(should/could) 5. He ______ go out alone at night. It's dangerous.(shouldn't/couldn't) 6. ______ we go for a walk after dinner?(Should/Could) 7. Students ______ follow the school rules.(should/could) 8. You ______ talk loudly in the library.(shouldn't/couldn't) 9. ______ I help you carry the box?(Should/Could) 10. She ______ ask the teacher for help if she has problems.(should/could) 11. You ______ spend too much time on computer games.(shouldn't/couldn't) 12. ______ we meet at the school gate tomorrow?(Should/Could) 13. Everyone ______ protect the environment.(should/could) 14. He ______ be late for the meeting. It's very important.(shouldn't/couldn't) 15. You ______ read more books to improve your English.(should/could) (二)反身代词中考习题(15道) 1. He taught ______ (he) English when he was young. 2. We enjoyed ______ (we) at the party last night. 3. She can finish the work by ______ (she). 4. Help ______ (you) to some fruit, kids. 5. The little boy can dress ______ (he) now. 6. I did the homework all by ______ (I). 7. They built the house by ______ (they). 8. The cat washed ______ (it) after eating. 9. You should look after ______ (you) when your parents are out. 10. She hurt ______ (she) when she fell off the bike. 11. We should believe in ______ (we). 12. Help ______ (you) to some cakes, Tom. 13. The old man can take care of ______ (he). 14. They enjoyed ______ (they) in the park. 15. I will do it ______ (I) if you are busy. 学科网(北京)股份有限公司 $

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Unit 2 Stay Healthy 情态动词should could 和反身代词 (语法讲解+分层精练)-2025-2026学年人教版英语八年级下册
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Unit 2 Stay Healthy 情态动词should could 和反身代词 (语法讲解+分层精练)-2025-2026学年人教版英语八年级下册
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