1.4.4 Possibility, probability and certainty



1 Possibility, probability and certainty: present


Possibility: Fem suposicions amb could, may/might, must i can't +infinitiu, p. ex.:


I don't know where Phil is but he could /may/mightbe in the garden.
(No sé on és en Phil, però podria ser al jardí.)

The phone's ringing. It could/may/might be your mother.
(Sona el telèfon. Pot ser la teva mare.)

They live in a big house. They must be well off.
(Viuen en una casa gran. Deuen ser acomodats.)

This can't be Fred's umbrella. His is black.
(Aquest no pot ser el paraigua d'en Fred. El seu és negre.)



Nota: NO podem usar can per a expressar és ‘possible que’, per tant:

Error: I don't know where Phil is but he can be in the garden.



2 Possibility, probability and certainty: past


Past possibility: Fem suposicions amb could have, may/might have, must have i can't/couldn't have +participi passat, p. ex.:


I don't know where Phil was but he could/may/might have been in the garden.
(No sé on era en Phil, però podria haver estat al jardí.)

Someone called while we were out. It It could/may/might have been your mother.
(Algú va telefonar mentre érem fora. Podria haver estat la teva mare.)

They lived in a big house. They must have been well off.
(Vivien en una casa gran. Deuen haver estat acomodats.)

That can't/couldn't have been Fred's umbrella. His was black.
(Aquell no podia haver estat el paraigua d'en Fred. El seu era negre.)


Nota: NO podem usar can en el sentit d'‘és possible que’, per tant:

Error: I don't know where Phil was but he can have been in the garden.



3 Possibility and probability: future


Fem servir les mateixes formes que les del present, p. ex.:


I don't know Karen's plans but she could/may/might come tomorrow.
(No conec els plans de la Karen, però pot ser que vingui demà.)

Karen could/may/might  come tomorrow.
(Pot ser que la Karen vingui demà.)


Nota: podem fer servir can en el sentit de ‘és possible que’, per tant:

Error: I don't know Karen's plans but she can come tomorrow.