Must,Musnt’t

"Must" and "mustn’t" are modal verbs used in English to express necessity, obligation, or prohibition. ### Must **Meaning**: It indicates a strong obligation or necessity. **Usage**: - **Obligation**: "You must submit your assignment by Friday." - **Advice**: "You must see that movie; it's fantastic." - **Logical conclusion**: "She must be at home; the lights are on." ### Mustn’t (Must Not) **Meaning**: It indicates prohibition or something that is not allowed. **Usage**: - **Prohibition**: "You mustn’t smoke in here." - **Advice against something**: "You mustn’t forget to lock the door before you leave." - **Warning**: "You mustn’t go there alone." ### Examples in Sentences: 1. **Must**: - "You must wear a helmet when riding a bike." - "We must finish this project by the deadline." 2. **Mustn’t**: - "You mustn’t talk during the exam." - "Children mustn’t play near the road." ### Summary: - Use "must" when imposing an obligation or necessity. - Use "mustn’t" to express something that is not permitted or is prohibited. Feel free to ask if you have more questions or need further clarification!