non-progressive verbsSome verbs are not used in progressive forms (see progressive 2: non-progressive verbs), even if the meaning is one for which a progressive form ismore suitable. Common examples are be, have and know.John’s been ill all week...

causes and origins: Who gave you that?We normally use the present perfect when we are thinking about past events together with their present results (see present perfect 1: basic information.).I can’t come to your party because I’ve broken my...