Unit 7 When Disaster Strikes 情态动词语法课件2023-2024学年高一上学期中职英语外研版（2021）基础模块1

情态动词 定义 1、情态动词不是动词 情态动词+do（动词原形） 2、没有人称和数的变化 不用变三单，不用加s，没有复数 结构 1、肯定句 情态动词+do I can dance. 2、否定句 情态动词+not+do I can not dance. I can’t dance. 3、一般疑问句 情态动词+主语+do Can you dance? 用法 1、情态动词表推测 must be 一定是 can't be 一定不是 may be 可能是 Someone is outside. It must be my mother. It can’t be my mother. She is working. It may be my mother. 可能是我妈妈 一定是我妈妈 一定不是我妈妈，她正在工作 2、情态动词表询问、请求 提问： Can/May I……？ 我可以……吗? Could I……？ 语气更委婉 回答：Yes,you can.是的，你可以 No,you mustn’t.不，你一定不可以 用法 用法 3、情态动词表要求 Can / Should I……？我应该……吗？ Need I……？我应该……吗？ must I……？ 我必须……吗？ 回答：Yes,you must.是的，你必须做 No,you needn’t. 不，你不用做 补充：Yes，you have to. 是的，你不得不. No，you don't have to. 不，你不是必须去做 need need to do 需要去做 need to be done=need doing 需要被做 1. You ________ stop when the traffic light turns red.  A. can      B. had better         C. need           D. must 2. — Mum, must I stay there the whole day? — No, you___. You _____ come back after lunch, if you like. A. mustn't; can        B. needn't; must         C. needn't; may D. mustn’t; may 3. --- Whose notebook is this? ---It _______ Jim’s. It has his name on it.    A. can’t be           B. must be            C. can be D. mustn’t D C B 4. There's enough time for you to go to the airport. You______ hurry now. A. should       B. needn't    C. must   D. can't 5. —Mum, must I wash the dishes right now? —No, you ____. A. shouldn’t          B. wouldn’t              C. mustn’t               D. needn’t 6. —Is that your teacher?     —That _____ be Mr. Wang. He has gone to Japan with his wife. A. can’t                 B. mustn’t                C. may not D. can B D A 7. —____I swim here? — I'm sorry. Children_____ swim alone here. A. Must; can't         B. May; must          C. Can; mustn't