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Curso de Inglés Intermedio: Gramática Clase 16

Modal verbs for obligations

Focus on modal verbs to express strong obligations and mild obligations (must, have to, ought to)
Everybody has obligations, either at home or at work. Classify your responsibilities in order of importance and tell us which ones are more relevant for you.

Explanation: Do you need to express something of high importance? An Obligation? We can use MUST and HAVE TO.


Explanation: For general obligations in the present.
Example: When you travel abroad you must present your passport at the airport.

Have to

Explanation: Have is not a modal verb as such, but it behaves as one. You must conjugate it depending on the subject and tense.
Example: Joe has to practice more if he wants to win in the competition.

Grammar: Modals

The modal verbs include could, should, must / have to. They are used with other verbs to express ability, obligation, possibility, and so on.

Make suggestions Give advice Express Obligations
You could stop smoking You should/ought to stop smoking You must/have to stop smoking
! Gentle !! Strong !! Very strong