The Grammaring Guide to English Grammar with Exercises

Aspects

The aspect of a verb does not indicate when an action takes place in time; it rather shows the relationship between the action and the passage of time as seen from the speaker's point of view.

There are two aspects in English: the continuous (also called the progressive) aspect expresses duration; the perfect aspect expresses completion. The combination of these two aspects makes the perfect continuous.

The continuous aspect

The perfect aspect

The perfect continuous aspect