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Categorias: Todos - tenses - laws - obligation - advice

por MARÍA JOSEFA MARTÍN MOYANO 9 meses atrás

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MODAL VERBS OF OBLIGATION

Modal verbs are essential in English to express different forms of obligation and advice. "Have to" is used to indicate rules or laws imposed by external factors and applies to all tenses.

MODAL VERBS OF OBLIGATION

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MODAL VERBS OF OBLIGATION

SHOULD/SHOULDN'T

ADVICE

We shouldn't stay up until late

We should leave early

HAVE TO

Rules, laws, coming from OUTSIDE

All tenses

Do-Does for questions

-s in the 3rd person singular

MUST

PERSONAL obligation

You MUST see the doctor

only present form

followed by infinitive without to

Ex. I MUST do my homework