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Modal verbs - Coggle Diagram

- - - - could/might/should/would + have + [main verb past participle].
        
        .
    - - Used to talk about something in future
      - For simple future, future continuous, future perfect,
        and future perfect continuous
      - Form with modal verb will
      - do it in
        some other way than by adding a modal verb.
- - - - Permission
        
        Request
        
        Suggestion/advice
        
        Command
        
        Obligation or necessity
        
        Habit
        
        9 more items...
        
        To express a necessary action, such as an obligation,
        duty (deber), or requirement
        
        Negative forms express that an
        action is not necessary.
        
        Same modal verbs that in commands: must, have, and need.
        
        Must, have or need to command something
        
        Have or need, main verb does
        not drop the word to from its infinitive form
        
        Should, to recommend a course of action but not command
        it (ordernarla)
        
        To ask something else to do something, start question with will, would, can, or could.
        
        Can, may or could
        
        May: considered more formal and polite usage for permission
        
        In a modern informal usage, may and can are perfectly acceptable options for describing possibility or permission.
      - Cannot or can´t, shows that the subject is unable to do something