Unit 4 Safety first单元语法专项-2026-2027学年上学期英语五年级上册（译林版三起·新教材）

**基本信息** 聚焦情态动词should/shouldn't用法，通过系统语法总结、易错警示及梯度化练习，强化语言运用能力与规则辨析思维。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |核心语法总结|4句式+4易错点|结构公式（主+should+动原）、否定/疑问转换规则、易错点规避（如should后接动原）|从语法规则（should用法）到发音规则（gr）再到固定搭配，形成“规则-辨析-应用”链条| |语法专项练习|8类题型（含短文填空、情景交际）|单句语法运用（动词适当形式填空）、句型转换（否定/疑问改写）、语境应用（短文/对话补全）|从基础短语互译到综合情景交际，梯度覆盖语法点的识别、辨析与实际运用|

Unit 4 Safety first单元语法专项-2026-2027学年上学期 英语五年级上册（译林版三起·新教材） 第一部分 单元核心语法知识点总结 一、情态动词should/shouldn't的用法（单元核心语法） 本单元核心语法为情态动词should与否定形式shouldn't = should not，用于提出安全建议、表达行为规范与义务，后必须接动词原形，无人称和数的变化。 句式 结构公式 教材原句示例 肯定句 主语 + should + 动词原形 + 其他 We should warm up first. 否定句 主语 + shouldn't + 动词原形 + 其他 We shouldn't run on the stairs. 一般疑问句 Should + 主语 + 动词原形 + 其他？ Should we keep to the right? 简略回答 Yes, 主语 + should. / No, 主语 + shouldn't. Yes, we should. / No, we shouldn't. 二、字母组合gr的发音规则（Sounds in focus） gr在单词中通常发 /gr/ 浊辅音组合，是本单元辨音题高频考点，发音时注意声带振动，区分清辅音组合cr /kr/。 例词：great, green, grapes, grow, grass, ground 三、单元核心固定搭配（语法常考搭配） - warm up 做准备活动，热身 - on the stairs 在楼梯上 - keep to the right 靠右边走 - jump from the stairs 从楼梯上跳下来 - swimming pool 游泳池 - safety first 安全第一 - pull others 拉扯别人 - push others 推搡别人 - PE class 体育课 - sports ground 运动场 ⚠️高频易错警示 1. should / shouldn't后必须接动词原形，不能接动词第三人称单数、动词-ing形式或过去式。 错误：He should runs on the playground. 正确：He should run on the playground. 2. 变否定句时，直接在should后加not，缩写为shouldn't，无需加助动词do/does。 错误：We don't should run in the classroom. 正确：We shouldn't run in the classroom. 3. 变一般疑问句时，直接将should提前到句首，句首首字母大写，无需借助助动词。 错误：Do we should warm up first? 正确：Should we warm up first? 4. 表达“不应该做某事”时，否定词not要加在should之后，不可放在句首构成祈使句混用。 错误：Not swim in the river. 正确：We shouldn't swim in the river. 第二部分 语法专项练习题 练习一 短语英汉互译（基础夯实） A 英译汉 1. warm up ________ 2. keep to the right ________ 3. swimming pool ________ 4. jump from the stairs ________ 5. safety first ________ 6. on the sports ground ________ B 汉译英 7. 推别人 ________ 8. 上体育课 ________ 9. 拉扯别人的衣服 ________ 10. 在楼梯上跑 ________ 11. 小心 ________ 12. 遵守安全规则 ________ 练习二 用所给动词的适当形式填空（单句语法运用） 1. You should ________ (be) careful on the wet stairs. 2. We shouldn't ________ (jump) from the high stairs. 3. The teacher says we should ________ (warm) up first in PE class. 4. Willy shouldn't ________ (go) swimming without warming up. 5. —Should I ________ (pull) my deskmate's chair? —No, you shouldn't. 6. We should ________ (keep) to the right when we go upstairs. 7. You shouldn't ________ (run) in the classroom. 8. Children should ________ (learn) more about safety rules. 9. Sam says we shouldn't ________ (swim) in the lake. 10. Should we ________ (make) a safety poster for our classroom? 11. We should ________ (listen) to the teacher carefully. 12. You shouldn't ________ (push) your classmates in the hallway. 13. Everyone should ________ (stay) safe at school. 14. Should we ________ (walk) slowly on the stairs? 15. We shouldn't ________ (play) with sharp things. 练习三 句子改错（找出下列各句中的一处错误并改正） 1. We should runs on the sports ground. ________ 改为 ________ 2. You shouldn't to push your classmates. ________ 改为 ________ 3. Do we should keep to the right on the stairs? ________ 改为 ________ 4. They shouldn't ate in the library. ________ 改为 ________ 5. She should keeps her desk tidy. ________ 改为 ________ 6. Not swim in the river. It's not safe. ________ 改为 ________ 7. Should I to call the teacher for help? ________ 改为 ________ 8. We don't should jump from the stairs. ________ 改为 ________ 9. You should careful when you cross the street. ________ 改为 ________ 10. Willy no should go into the water without warming up. ________ 改为 ________ 练习四 按要求改写句子（句型转换核心训练） 1. We should run in the classroom.（改为否定句） ________________________________________________________________ 2. You should warm up first before PE class.（改为一般疑问句，并作肯定回答） ________________________________________________________________ 3. We shouldn't jump from the stairs.（改为肯定句） ________________________________________________________________ 4. We should keep to the right on the stairs.（对划线部分提问） ________________________________________________________________ 5. We should stay safe at school.（对划线部分提问） ________________________________________________________________ 6. Students should listen to the teacher carefully.（改为否定句） ________________________________________________________________ 7. Should we swim in the lake?（作否定回答） ________________________________________________________________ 8. They should follow the safety rules.（对划线部分提问） ________________________________________________________________ 9. We play football on the sports ground.（用should改写句子） ________________________________________________________________ 10. Willy goes into the water without warming up.（用shouldn't改写句子） ________________________________________________________________ 11. We must be careful on the stairs.（用should改写句子） ________________________________________________________________ 12. We can make safety signs for our school.（用should改写句子） ________________________________________________________________ 练习五 单项选择（语法辨析·易错点强化） ( ) 1. We ______ run on the stairs. It's not safe. A. should B. shouldn't C. can ( ) 2. You ______ warm up first before you do sports. A. should B. shouldn't C. do ( ) 3. —Should we push our classmates in PE class? —______ A. Yes, we do. B. Yes, we should. C. No, we shouldn't. ( ) 4. We shouldn't ______ from the high stairs. A. jump B. jumps C. jumping ( ) 5. Everyone should ______ to the right when going upstairs. A. keep B. keeps C. keeping ( ) 6. —______ we swim in this river? —No, you shouldn't. It's dangerous. A. Do B. Should C. Are ( ) 7. Which is a safe behavior at school? A. Run on the stairs. B. Push others in the hallway. C. Walk slowly on the wet floor. ( ) 8. Before you go swimming, you ______ warm up first. A. can't B. should C. shouldn't ( ) 9. We ______ run in the classroom. We ______ run on the sports ground. A. should; shouldn't B. shouldn't; should C. shouldn't; shouldn't ( ) 10. Which word has the same sound of "gr" as "great"? A. green B. cake C. cat ( ) 11. You ______ be careful when you use sharp things. A. should B. shouldn't C. don't ( ) 12. It's good to ______ before you play sports. A. warm up B. eat a lot C. run fast ( ) 13. Which of the following sentences is CORRECT? A. We should to keep quiet in the library. B. Should we eat in the classroom? C. You shouldn't pull others' clothes. ( ) 14. Safety is very important. We should know ______. A. how to keep safe B. how to run fast C. how to play games ( ) 15. —What should we do first in PE class? —We ______ warm up first. A. can B. should C. do ( ) 16. Which word has the different sound of "gr"? A. grapes B. grow C. cup ( ) 17. You ______ play football in the street. There are many cars. A. shouldn't B. should C. can ( ) 18. We should ______ our classroom clean and tidy. A. keep B. keeps C. keeping ( ) 19. —Who should we listen to in class? —We ______ listen to our teachers. A. can B. should C. do ( ) 20. The sign "No swimming" means we ______ swim here. A. should B. shouldn't C. can 练习六 根据汉语提示完成句子（汉译英语法输出） 1. 上体育课之前我们应该先热身。 We ________ before PE class. 2. 我们不应该在楼梯上奔跑。 We ________ on the stairs. 3. 在楼梯上我们应该靠右走。 We ________ on the stairs. 4. 我们不应该从楼梯上往下跳。 We ________ from the stairs. 5. 你不应该在教室里推别人。 You ________ in the classroom. 6. 我们应该在游泳池里游泳。 We ________ in the ________. 7. 安全第一。我们应该遵守安全规则。 ________. We should follow the safety rules. 8. 我们应该小心，注意脚下。 We ________ and watch our steps. 9. 在图书馆我们应该保持安静。 We ________ in the library. 10. 我们应该学会如何保护自身安全。 We ________ how to keep ourselves safe. 练习七 短文填空（语法运用·选词填空·共2篇） Passage 1（基础篇·贴合教材Cartoon time） 从方框中选择合适的词填空，每词限用一次。 ( warm up swim shouldn't should listen hurt go help swimming right ) One day, Bobby, Sam and Willy 1.________ to the park. They want to 2.________ in the river. Sam says they 3.________ swim there. It's dangerous. Then they go to the 4.________ pool. Willy can't wait to jump into the water. Sam says, "You 5.________ first!" But Willy doesn't 6.________ to him. Soon, his leg 7.________. He can't move. Sam 8.________ him. Willy says, "You're 9.________. I 10.________ follow the safety rules." Passage 2（提升篇·贴合教材Story time·校园安全） 从方框中选择合适的词填空，每词限用一次。 ( keep run push should shouldn't safe stairs PE warm up follow ) There are many safety rules in our school. We should know how to keep 1.________. On the 2.________, we 3.________ walk slowly and 4.________ to the right. We 5.________ run or jump. In 6.________ class, we 7.________ first before we do sports. We 8.________ others. It's dangerous. If we 9.________ all the rules, we can stay safe at school. Safety 10.________ first. 练习八 情景交际补全对话（语法+交际综合运用） 从方框中选择合适的句子补全对话，有两项多余。 ( A. We shouldn't push others. B. Don't run on the stairs. C. We should warm up first. D. You're welcome. E. Should we run fast in class? F. What should we do to keep safe? G. We can jump from the stairs. ) A: Hurry up! We'll be late for PE class. B: Slow down! 1.________ A: Oh, I'm sorry. But we don't have much time. B: Safety comes first. 2.________ A: You're right. What else should we remember in PE class? B: 3.________ It can help us not get hurt. A: That's true. 4.________ B: No, we shouldn't. We may hurt our classmates. A: I see. Thank you for telling me. B: 5.________ 参考答案 练习一 短语英汉互译 A 英译汉 1. 做准备活动，热身 2. 靠右边走 3. 游泳池 4. 从楼梯上跳下来 5. 安全第一 6. 在运动场上 B 汉译英 7. push others 8. have PE class 9. pull others' clothes 10. run on the stairs 11. be careful 12. follow the safety rules 练习二 用所给动词的适当形式填空 1. be 2. jump 3. warm 4. go 5. pull 6. keep 7. run 8. learn 9. swim 10. make 11. listen 12. push 13. stay 14. walk 15. play 练习三 句子改错 1. runs → run 2. to push → push 3. Do we should → Should we 4. ate → eat 5. keeps → keep 6. Not swim → We shouldn't swim / Don't swim 7. to call → call 8. don't should → shouldn't 9. should careful → should be careful 10. no should → shouldn't 练习四 按要求改写句子 1. We shouldn't run in the classroom. 2. Should you warm up first before PE class? Yes, I/we should. 3. We should jump from the stairs. 4. What should we do on the stairs? 5. Where should we stay safe? 6. Students shouldn't listen to the teacher carefully. 7. No, we shouldn't. 8. What should they do? 9. We should play football on the sports ground. 10. Willy shouldn't go into the water without warming up. 11. We should be careful on the stairs. 12. We should make safety signs for our school. 练习五 单项选择 1.B 2.A 3.C 4.A 5.A 6.B 7.C 8.B 9.B 10.A 11.A 12.A 13.C 14.A 15.B 16.C 17.A 18.A 19.B 20.B 练习六 根据汉语提示完成句子 1. should warm up 2. shouldn't run 3. should keep to the right 4. shouldn't jump 5. shouldn't push others 6. should swim; swimming pool 7. Safety first 8. should be careful 9. should keep quiet 10. should learn 练习七 短文填空 Passage 1 1. go 2. swim 3. shouldn't 4. swimming 5. should warm up 6. listen 7. hurts 8. helps 9. right 10. should Passage 2 1. safe 2. stairs 3. should 4. keep 5. shouldn't 6. PE 7. should warm up 8. shouldn't push 9. follow 10. comes 练习八 情景交际补全对话 1.B 2.F 3.C 4.E 5.D ( 第 1 页 共 11 页 ) 学科网（北京）股份有限公司 $