In Present progressive^x, Modals^x, Regards^x

Paco: By the way I have a feeling that English 'now' (in the linguistic sense, not in the physical sense) is not instantaneous, but it seems to occupy some span in the time that flows from the past to the future. Otherwise I cannot understand the usage of the present progressive tense. JTT: I...

Technically, there are two tenses: Present (or Non-Past) and Past. There are four aspects derived from two aspect pairs (simple vs. perfect and simple vs. progressive): Simple, Perfect, Progressive, and Perfect Progressive Combining these gives eight tense-aspect combinations, sometimes...