| Expression | Relation |
|---|---|
| had | $TT=$past, $E<TT$ |
| had been | $TT=$past, $S<TT$, $E=$progressive |
| was | $TT=$past, $E=$progressive |
| have | $TT=$present, $E<TT$ |
| have been | $TT=$present, $S<TT$, $E=$progressive |
| is | $TT=$present, $E=$progressive |
| will be | $TT=$future, $E=$progressive |
| will have | $TT=$future, $E<TT$ |
| will have been | $TT=$future, $S<TT$, $E=$progressive |
Tenses and aspects
May 23, 2026