Present continuous and 'going to' Verb patterns The present perfect with ‘ever’ and ‘never’ The present perfect with 'for' and 'since' Comparatives and superlatives The present perfect with 'just', ...
Past simple We look at the 'past simple' and give you examples in this 6 Minute Grammar.
Combining have been and were in this way is perfectly acceptable here, Umed. Often, in language use, deciding whether to use the present perfect or the past simple depends on your perspective on the ...