Unit 4 Safety first（暑假句型预习讲+练）-2026年小学英语五年级上册（译林版三起・新教材）

**基本信息** 小学英语暑假句型专项训练，围绕“安全第一”主题，系统整合should/shouldn't用法、祈使句等核心句型，通过梯度化题型培养语言应用与安全意识。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |知识点梳理|6类核心句型+5项语法小结|should/shouldn't接动词原形；祈使句否定用Don't+动词原形；核心短语（keep safe等）|从安全情境句型到语法规则归纳，构建“情境-规则-应用”逻辑链| |题型训练|8类题型（填空/改写/情景选择等，每题约10题）|语法规则在不同题型中的迁移应用（如句型转换、情景表达）|从基础词形到综合对话，实现“基础巩固-能力提升-情境运用”递进|

Unit 4 Safety first（暑假句型预习讲+练） 2026-2027学年小学英语五年级上册（译林版三起·新教材） 句型知识点简述： 一、单元核心交际句型（主题：安全第一） 1. 询问如何保持安全 --- What should you do to keep safe? --- I should / We should + 动词原形 + 其他. 例句：What should you do to keep safe? I should look at the traffic lights. 2. 表达应该做某事 --- You should + 动词原形 + 其他. 例句：You should walk slowly on the stairs. 例句：You should follow the school rules. 3. 表达不应该做某事 --- You shouldn't + 动词原形 + 其他. 例句：You shouldn't run in the corridors. 例句：You shouldn't swim alone. 4. 校园安全提醒 --- Don't run in the classroom. / Don't play on the stairs. --- Be careful on the stairs. 例句：Don't climb the tall trees at school. It's dangerous. 5. 游泳安全提醒 --- You should swim with an adult. --- You shouldn't go into the water when you are alone. 例句：It's dangerous to swim in the river. 6. 其他常用句型 --- Look at the traffic lights. / Wait for the green man. --- Be careful! / Keep safe! 例句：To keep safe, you should follow the traffic rules. 二、小结 1. should 表示"应该"，shouldn't = should not 表示"不应该"，后面都接动词原形。 2. 祈使句的否定形式：Don't + 动词原形，表示"不要……"。 3. keep safe 表示"保持安全"，be careful 表示"小心"。 4. 表达危险：It's dangerous. / Don't play with fire. 5. 常用安全词汇：safe, dangerous, careful, traffic lights, stairs, corridor, adult, alone, follow rules 一、用所给词的适当形式填空。 1. You _______ (should) wait for the green man at the traffic lights. 2. We _______ (should not) run in the corridors at school. 3. To keep safe, you should _______ (walk) slowly on the stairs. 4. You _______ (should) swim with an adult in the pool. 5. You _______ (should not) play with fire. It's very dangerous. 6. You _______ (should not) climb the tall trees in the park. 7. _______ (be) careful when you cross the road, children. 8. We should _______ (follow) the traffic rules every day. 9. You _______ (should not) go into the water when you are alone. 10. What _______ (should) we _______ (do) to keep safe at school? 二、按要求改写句子（每空一词）。 1. You should look at the traffic lights.（改为否定句） _______ _______ at the traffic lights. 2. You should walk slowly on the stairs.（对划线部分提问） _______ _______ you do on the stairs? 3. Don't run in the classroom.（改为同义句） You _______ _______ in the classroom. 4. You shouldn't play with fire.（改为祈使句否定形式） _______ _______ with fire! 5. We should wait for the green man.（改为一般疑问句） _______ _______ wait for the green man? 6. You should be careful at school.（改为祈使句） _______ _______ at school! 7. To keep safe, we should follow the school rules.（对划线部分提问） _______ _______ we do to keep safe? 8. You should look left and right before crossing.（对划线部分提问） _______ _______ you do before crossing? 三、匹配问答（A栏问句，B栏答语）。 A ( )1. What should we do to keep safe on the road? ( )2. Should I swim alone? ( )3. Can we run in the classroom? ( )4. Why shouldn't we climb the tall trees? ( )5. Look at the traffic lights before crossing! ( )6. Don't play on the stairs! ( )7. Is it safe to swim in the deep water? ( )8. What should I do when I cross the road? ( )9. Should we wait for the green man? ( )10. Be careful at the swimming pool! B A. No, you shouldn't. It's dangerous. B. You should look left and right. C. No, it isn't. It's very dangerous. D. You should follow the traffic rules. E. Because we may fall down. F. OK. I will. G. No, we can't. We may get hurt. H. Yes, we should. I. Sorry, I won't do that again. J. Thank you! I will be careful. 四、情景选择。 ( )1. 同学要在走廊里奔跑，你应该劝他说： A. You should run in the corridors. B. You shouldn't run in the corridors. You may get hurt. C. You can run here quickly. ( )2. 你想提醒朋友过马路要看红绿灯，你应该说： A. Look at the beautiful flowers. B. Look at the traffic lights and wait for the green man. C. Look at the birds in the sky. ( )3. 朋友问你是否应该独自去河里游泳，你应该回答： A. Yes, you should. It's fun. B. No, you shouldn't. It's dangerous. You should swim with an adult. C. You can swim anywhere. ( )4. 老师提醒你在校园里要遵守校规以保证安全，应该说： A. You should follow the school rules to keep safe. B. You shouldn't go to school. C. You can break the rules. ( )5. 你看到同学要玩火，你应该警告他说： A. You should play with fire. B. Don't play with fire! It's dangerous. C. You can play with fire carefully. 五、连词成句，补全对话。 A: Hi, Tom. 1. _________________________________________________? (what, should, we, safe, to, keep, do) B: We should follow the school rules. A: 2. _________________________________________________? (should, run, we, in, the, corridors) B: No, we shouldn't. It's dangerous. A: 3. _________________________________________________. (should, slowly, on, the, stairs, walk, we) B: Yes, you're right. Safety first. A: 4. _________________________________________________? (should, with, swim, we, who) B: We should swim with an adult. A: 5. _________________________________________________! (careful, be, please) B: OK. Thank you! 六、根据中文提示翻译句子。 1. 你应该在过马路前看红绿灯。 ___________________________________________________________ 2. 我们不应该在走廊里奔跑。 ___________________________________________________________ 3. 为了保持安全，你应该和大人一起游泳。 ___________________________________________________________ 4. 小心！不要在楼梯上玩耍。 ___________________________________________________________ 5. 我们应该遵守交通规则。 ___________________________________________________________ 七、根据句意及首字母提示完成句子。 1. You s_________ follow the traffic rules when you walk on the road. 2. It's d_________ to swim in the river alone. You shouldn't do that. 3. Please be c_________ when you go down the stairs. 4. You shouldn't run in the c_________ at school. You may fall down. 5. We should wait for the g_________ man before we cross the road. 6. You should swim with an a_________. Don't go into the water alone. 7. To keep s_________, you should follow the school rules. 8. Don't p_________ with fire! It's very dangerous. 9. You should look at the traffic l_________ before crossing the road. 10. You shouldn't c_________ the tall trees in the park. It's not safe. 八、选择合适的句子补全对话（其中有一项为多余项）。 A. You should look at the traffic lights. B. Don't run in the corridors! C. Why shouldn't we swim there? D. You should swim with an adult. E. Is it safe to play there? F. Be careful on the stairs! A: Hi, Mike. Let's go to the park this afternoon. B: Great idea! But we should keep safe in the park. A: 1. _______ B: No, it isn't. The lake is very deep. A: 2. _______ B: Because the water is deep and there is no adult around. A: Oh, I see. 3. _______ B: Yes, you're right. We should also be careful when we walk in the park. A: Look! Some children are running in the corridors of the building. B: 4. _______ They may get hurt. A: And that boy is playing on the stairs. B: 5. _______ It's dangerous. A: You're right. Safety first! 参考答案 一、用所给词的适当形式填空。 1. should 2. shouldn't 3. walk 4. should 5. shouldn't 6. shouldn't 7. Be 8. follow 9. shouldn't 10. should; do 二、按要求改写句子。 1. shouldn't look 2. What should 3. shouldn't run 4. Don't play 5. Should we 6. Be careful 7. What should 8. What should 三、匹配问答。 1.D 2.A 3.G 4.E 5.F 6.I 7.C 8.B 9.H 10.J 四、情景选择。 1.B 2.B 3.B 4.A 5.B 五、连词成句。 1. What should we do to keep safe? 2. Should we run in the corridors? 3. We should walk slowly on the stairs. 4. Who should we swim with? 5. Please be careful! 六、翻译句子。 1. You should look at the traffic lights before you cross the road. 2. We shouldn't run in the corridors. 3. To keep safe, you should swim with an adult. 4. Be careful! Don't play on the stairs. 5. We should follow the traffic rules. 七、根据句意及首字母提示完成句子。 1. should 2. dangerous 3. careful 4. corridors 5. green 6. adult 7. safe 8. play 9. lights 10. climb 八、选择合适的句子补全对话。 1.E 2.C 3.D 4.B 5.F （多余项：A） 第 1 页 共 12 页 学科网（北京）股份有限公司 $