Modals

1. Had Better

1.1. Recommendations/Desperate hope/Warning people

2. Must

2.1. Necessity/Certainty/Strong Recommendation (negative - Prohibition)

3. Should/Ought to

3.1. Advice/suggestions/expectation/strong probability.

4. Have to/Have got to

4.1. Certainty/Necessity/Obligation

5. Would

5.1. Past of will/repetition/conditionals

6. Shall

6.1. Future action/predestination/inevitability/suggestions

7. May

7.1. Possibility/Give or Request Permission

8. Might

8.1. Possibility/Conditionals/Suggestions/Requests

9. Can

9.1. Ability/Opportunity/Requests/Permission/Impossibility/possibility

10. Passive Modals

10.1. Passive Simple

10.2. Passive Modal Perfect

10.3. Passive Modal Continuous

10.4. Passive Modal Perfect Continuous

11. Modal Structure

11.1. Simple Modal

11.2. Continuous Modal

11.3. Perfect Modal

11.4. Perfect Continuous Modal

12. Will

12.1. promises/voluntary actions in the future./predictions about the future.

13. Could

13.1. possibility/past ability/suggestions/requests/conditionals