non-progressive verbsSome verbs are not used in progressive forms (see progressive 2: non-progressive verbs), even if the meaning is one for which...

how long? present perfectWe use a present perfect to say how long a situation or action has continued up to now. Compare:It’s raining again.It’s...

This entry deals with the simple present perfect. For the present perfect progressive, see present perfect 4 forms have/has + past participle I...

Discourse means ‘pieces of language longer than a sentence’. Some words and expressions are used to show how discourse is constructed. They can...