must / mustn'tCAN/CAN'T

MODAL VERBS

must / mustn't CAN/CAN'T

START

Must / must not-Mustn't

Obligation and Prohibitions

• “must” (deber) allows us to say what we are obliged to do.

• “mustn’t / must not” (no deber) allows us to say what is prohibited to do.

• We use MUST and MUSTN’T to talk about rules and obligations.

Must/ Mustn't

Examples: I must do my homework - debo hacer la tarea You must put your toothpast in a special box - debes meter la pasta de dientes en una caja especial I must not eat in class - no debo comer en clase You mustn't give food to animals - no debes dar comida a los animales

Grammar

Subject + must + verb

Must subject + verb?

Subject + must not /mustn't + verb

Must I do the homework?

You mustn't eat in class

You must listen in class

Exercises

Obligations or Prohibitions?

All must shower before entering the pool

All mustn't shower before entering the pool

You must bring your pet

You mustn’t bring your pet.

Swimming Pool

Children under 10 must be accompanied by an adult.

Children under 10 mustn't be accompanied by an adult.

Swimmers mustn't wear cap and goggles

People must run around the pool.

Swimmers must wear cap and goggles

People mustn't run around the pool.

CAN/ CAN´T

• “can” (poder) allows us to say what we are able to do.

• “can’t / cannot” (no poder) allows us to say what we are not able to do.

• We also use CAN and CAN’T to talk about something that is or isn't possible.

• In questions, CAN allows us to ask for permission.

Presentación del módulo

Examples: I can’t swim. → Sé nada/ Puedo nadar (habilidad). You can bring food to the walk → Puedes traer comida al paseo (posibilidad) Can I go to the toilet? → ¿Puedo ir al baño? (permiso)

Competencias específicas

Grammar

Can + subject + verb?

subject + can't/ cannot + verb

Subject + can + verb

Can I go to the toilet?

You can't pay by card

You can bring food

CAN/ CAN'T