The 12 Tenses: The Big Picture

Intermediate · Verb Tenses

English tenses look scary because there are twelve of them, but there is a simple secret: each tense is just a TIME combined with an ASPECT.

The three times are past, present, and future. The four aspects are simple (a fact), continuous (in progress), perfect (linked to another time), and perfect continuous (how long something has been in progress). 3 times × 4 aspects = 12 tenses. Learn the four aspects once, and you understand the whole system.

How to build it

TIME (past / present / future) × ASPECT (simple / continuous / perfect / perfect continuous) = 12 tenses

Rules & examples

Simple = a fact, a habit, or a completed action.
The plain form. Nothing "in progress" about it.
- I work. / I worked. / I will work.
Continuous (be + -ing) = an action in progress at a certain time.
Zoom in on a moment while the action is still happening.
- I am working. / I was working. / I will be working.
Perfect (have + past participle) = an action connected to another point in time.
It looks back from "now" (or from another time) to a finished action with a result.
- I have worked. / I had worked. / I will have worked.
Perfect continuous (have been + -ing) = HOW LONG an action has been in progress.
Combines "connected to now" with "still going/just stopped", stressing duration.
- I have been working. / I had been working. / I will have been working.
Stative verbs (know, like, want, believe, own, understand) usually avoid continuous forms.
These describe states, not actions, so they rarely take -ing.
- I know him. (not: I am knowing him)

Tips to remember

Learn the four aspects in the present first (work / am working / have worked / have been working). Then just shift the helper verb to the past or future.
The "past participle" is the third form of a verb: go-went-gone, eat-ate-eaten, work-worked-worked.

Common mistakes

✗ I am knowing the answer. → ✓ I know the answer. — "Know" is a stative verb, so it stays in the simple form.