- Present (now or habitually)
- Past (already happened)
- Future (going to happen)
- Present Perfect (began in past and now completed or continuing in present) (has looked)
- Past Perfect (happened before another past action) (had looked)
- Future Perfect (is going to happen before some other future action) (will have looked)
- Present Progressive (in progress) (is looking)
- Past progressive (was in progress) (was looking)
- Future progressive (will be in progress) (will be looking)
- Present Perfect Progressive (was in progress and still is) (has been looking)
- Past Perfect Progressive (was in progress until recently) (had been looking)
- Future Perfect Progressive (will be in progress until a set time in the future) (will have been looking)