Modal Verbs: Must, Mustn't, and Have to for Obligation and Prohibition

Section role: This presentation supports the 'Must, Mustn't, and Have to: Navigating Obligations' section, providing visual aids and structured explanations as the teacher delivers direct instruction on modal verbs. Slides: (1) Title Slide: 'Rules of the Game: Understanding Must, Mustn't, and Have to' – bullets: what we'll learn, connection to rules from Section 1; (2) What is an Obligation?: 'Must' – bullets: definition (something required), sentence structure (subject + must + base verb), example: 'You must wear a seatbelt'; (3) Obligation (continued): 'Have to' – bullets: definition (similar to must, often for external rules), sentence structure (subject + have to + base verb), example: 'Students have to attend class'; (4) What is a Prohibition?: 'Mustn't' – bullets: definition (something forbidden/not allowed), sentence structure (subject + mustn't + base verb), example: 'You mustn't talk during the test'; (5) Clarifying the Difference: 'Mustn't' vs. 'Don't Have to' – bullets: 'Mustn't' means forbidden, 'Don't have to' means optional, comparison table with example sentences for both ('You mustn't run' vs. 'You don't have to wear a jacket'); (6) Real-World Examples: Signs of Obligation and Prohibition – bullets: images of common public signs (e.g., 'Stop,' 'No Entry,' 'Yield,' 'Handicap Parking Only'), prompts to identify 'must' or 'mustn't' implications; (7) Check for Understanding: Quick Questions – bullets: 'If I say you mustn't run, is it okay to run slowly?', 'If I say you have to bring a pencil, can you leave it at home?' Closing slide: 'Let's look at some real-world signs and apply what we've learned!'

Lara from Teachy