modal verbs

diapositiva 1 it is used to: express ability / inability in the present exº they can / can’t run very fast. ask / give / refuse permission exº can i borrow your collar? –yes, you can. / no, you can’t. it is used to: express ability / inability in the past exº they could / couldn’t bark very loud when they were puppies. ask permission politely/make polite requests exº could i sit on your lap, please? exº could i have some more food, please? it is used to: express possibility exº they may bite you. ask / give / refuse permission (formal) exº may i have a snack? -yes, you may. no, you may not. it is used to: must …

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