Can vs Could vs Be able to

Habilidad, permiso y posibilidad

Can expresa habilidad presente y permiso informal. Could es su forma pasada o más formal. Be able to se usa cuando can no tiene la forma gramatical necesaria.

CAN: Habilidad actual / permiso informal
I can swim. / Can I sit here?
COULD: Habilidad pasada / solicitud formal / posibilidad
I could read at age 4. / Could you help me?
BE ABLE TO: Para tiempos donde can no existe
I will be able to come tomorrow. / I have been able to finish.

Ejercicios Prácticos

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1Completa

When I was five, I ___ ride a bicycle.

2Completa

She ___ speak three languages fluently.

3Completa

After months of practice, he ___ (be able to) play the song.

4Selecciona

___ you pass me the salt, please?

5Selecciona

I haven't ___ sleep well recently.

6Selecciona

He ___ run very fast when he was young.

7Corrige

Encuentra el error: 'I will can come to the party.'

8Reescribe

Hazlo más formal: 'Can I use your phone?'