to be able; can | I am able; I can | you are able; you can | he/she/it is able; he/she/it can | we are able; we can | you are able; you can | they are able; they can | I/he/she/it was able; I/he/she/it could | he/she/it has/had been able | can't; cannot | I/he/she/it could | couldn't [Add to Longdo]