Modals: Advice, Obligation & Possibility

Use 'should' and 'ought to' to give advice and make recommendations.

Use 'must' and 'have to' to express obligation and necessity.

Distinguish between 'mustn't' (prohibition) and 'don't have to' (no necessity).

Use 'can', 'could', 'may', and 'might' to express different degrees of possibility.

Use 'must' and 'can't' to make logical deductions about present situations.

Choose the appropriate modal verb in various social and formal contexts.