We also use could (not can) for actions which are not realistic.

The past tense is used for actions in a time which has already happened.

"Salvadoran territory is still being used for actions against Nicaragua."

Children use words differently for objects, spatial relations and actions.

The mouse is used for other actions, such as managing inventory and using weapons.

The preterite is used for actions that are seen by the speaker as having occurred at a single point in time.

The present tense is used for actions in a time which is happening now.

Often used for actions involving close liaison with land forces in 10 mm.

Her influence could still be used for positive actions.

The future tense is used for actions in a time which has not yet happened.