Common Time Expressions

Perfect tenses are often used with time expressions that indicate duration, completion, or sequence.

• Present Perfect: already, yet, just, ever, never, since, for, recently, so far.
• Past Perfect: before, after, by the time, until then, when.
• Future Perfect: by, by then, by the end of, before, by the time.

Key Point

The perfect tenses emphasize when an action is completed in relation to another point in time. They help speakers show order, duration, and the connection between past, present, and future events with greater precision.