Unit 3 情态动词should用法（专项训练）-2025-2026学年沪教版英语四年级下册

**基本信息** 聚焦情态动词should的基础用法，通过填空梳理+分层练习构建"规则-应用-转换"的完整训练体系，夯实语言能力基础。 **专项设计** |模块|题量/典例|方法提炼|知识逻辑| |----|-----------|----------|----------| |知识梳理|填空版梳理|should接动词原形、否定式shouldn't、三类用法（建议/义务/委婉语气）及疑问句结构|从形式规则到用法分类再到句式应用，形成概念生成链| |基础练习|填空15题/单选15题/写句子15题|动词原形应用、用法辨析（肯定/否定/情境建议）、句式转换（否定/疑问/问答）|由基础形式到情境应用再到综合表达，实现知识迁移|

情态动词 should 的用法 一、知识梳理（填空版） 情态动词 should 用来表达建议、义务、责任或委婉的语气，使用时要注意： should 后面必须接动词的______（不能加 s/ed/to）。 否定形式：在 should 后加 not，缩写为______。 常见用法： 表示劝告 / 建议：You ______ go to bed early.（你应该早点睡觉） 表示不应该做的事：You ______ swim in the river.（你不应该在河里游泳） 表示委婉的语气：I ______ think it's a good idea.（我认为这是个好主意） 一般疑问句：______ + 主语 + 动词原形...? 例：Should I open the window? 基础练习 一、用所给单词的适当形式填空（15 题） 1. You should ______ (finish) your homework first. 2. She shouldn't ______ (eat) too much candy. 3. We should ______ (listen) to the teacher carefully. 4. He should ______ (wash) his hands before meals. 5. They shouldn't ______ (run) in the hallway. 6. I should ______ (go) to bed at 9:00 p.m. 7. You shouldn't ______ (talk) loudly in the library. 8. Everyone should ______ (help) others. 9. The boy should ______ (say) sorry to his friend. 10. You shouldn't ______ (play) with fire. It's dangerous. 11. We should ______ (keep) our classroom clean. 12. She should ______ (drink) more water when she has a cold. 13. They shouldn't ______ (cross) the street when the light is red. 14. You should ______ (study) hard for the test. 15. He shouldn't ______ (watch) TV too long every day. 二、单项选择（15 题） ( ) 1. You ______ play football on the road. It's dangerous. A. should B. can C. shouldn't ( ) 2. Mike ______ his teeth every morning. A. should brushes B. shouldn't brush C. should brush ( ) 3. Helen should ______ to the party on time. A. go B. goes C. to go ( ) 4. — I have a headache. — You ______ see a doctor. A. shouldn't B. should C. can ( ) 5. You ______ talk with your mouth full. A. should B. shouldn't C. can ( ) 6. — ______ I open the window? — Yes, please. It's hot. A. Should B. Am C. Do ( ) 7. The students ______ listen to the teacher carefully in class. A. shouldn't B. should C. are ( ) 8. You ______ make noise in the library. A. should B. shouldn't C. can ( ) 9. She ______ late for school. A. should be B. shouldn't be C. should ( ) 10. We ______ help our parents do housework. A. should B. shouldn't C. can't ( ) 11. — What ______ I do? — You should take some medicine. A. should B. do C. are ( ) 12. You ______ swim alone in the river. A. should B. shouldn't C. can ( ) 13. They ______ eat too much junk food. A. should B. shouldn't C. must ( ) 14. He ______ his homework before playing games. A. should do B. should does C. shouldn't do ( ) 15. — I feel tired. — You ______ have a rest. A. shouldn't B. should C. can't 三、按要求写句子（15 题） 1. You should get up early.（改为否定句） 2. They should keep quiet in the library.（改为一般疑问句） 3. She should drink more water.（对划线部分提问） 4. You shouldn't play with fire.（改为肯定句） 5. Should I help my mom cook dinner?（作肯定回答） 6. He should listen to the teacher.（改为否定句） 7. We should plant more trees.（改为一般疑问句） 8. You shouldn't run in the classroom.（改为肯定句） 9. — What should I do when I have a cold?（根据提示回答：应该多喝热水） 10. — What shouldn't we do in the hospital?（根据提示回答：不应该大声说话） 11. You should brush your teeth twice a day.（改为否定句） 12. They should clean the classroom every day.（改为一般疑问句） 13. Should he go to bed early?（作否定回答） 14. She shouldn't eat too much ice cream.（改为肯定句） 15. — What should you do at school?（根据提示回答：应该认真听老师讲课） 参考答案 知识梳理（填空版答案） 原形 shouldn't should shouldn't should；should 一、用所给单词的适当形式填空 1. finish 2. eat 3. listen 4. wash 5. run 6. go 7. talk 8. help 9. say 10. play 11. keep 12. drink 13. cross 14. study 15. watch 二、单项选择 1. C 2. C 3. A 4. B 5. B 6. A 7. B 8. B 9. B 10. A 11. A 12. B 13. B 14. A 15. B 三、按要求写句子 1. You shouldn't get up early. 2. Should they keep quiet in the library? 3. What should she do? 4. You should play with fire. 5. Yes, you should. 6. He shouldn't listen to the teacher. 7. Should we plant more trees? 8. You should run in the classroom. 9. You should drink more hot water. 10. We shouldn't talk loudly in the hospital. 11. You shouldn't brush your teeth twice a day. 12. Should they clean the classroom every day? 13. No, he shouldn't. 14. She should eat too much ice cream. 15. I should listen to the teacher carefully 1 学科网（北京）股份有限公司 $