What is the tense used here please?

John is having a shower at the moment

1 answer

Present progressive tense: "is + a verb ending with "-ing". The "-ing" word in this case is the present participle "having".

For more about this tense, see
http://grammar.ccc.commnet.edu/GRAMMAR/tenses/present_progressive.htm

The verb "to have" can also be used to form "perfect" tenses if used with another verb, but that is not the case here.