| Present | Past | Future | |
|---|---|---|---|
| I | observe | observed | will observe |
| you | observe | observed | will observe |
| he/she | observes | observed | will observe |
| we | observe | observed | will observe |
| you | observe | observed | will observe |
| they | observe | observed | will observe |
| I | observe |
| you | observe |
| he/she | observes |
| we | observe |
| you | observe |
| they | observe |
| I | observed |
| you | observed |
| he/she | observed |
| we | observed |
| you | observed |
| they | observed |
| I | will observe |
| you | will observe |
| he/she | will observe |
| we | will observe |
| you | will observe |
| they | will observe |
| Present | Past | Future | |
|---|---|---|---|
| I | have observed | had observed | will have observed |
| you | have observed | had observed | will have observed |
| he/she | has observed | had observed | will have observed |
| we | have observed | had observed | will have observed |
| you | have observed | had observed | will have observed |
| they | have observed | had observed | will have observed |
| I | have observed |
| you | have observed |
| he/she | has observed |
| we | have observed |
| you | have observed |
| they | have observed |
| I | had observed |
| you | had observed |
| he/she | had observed |
| we | had observed |
| you | had observed |
| they | had observed |
| I | will have observed |
| you | will have observed |
| he/she | will have observed |
| we | will have observed |
| you | will have observed |
| they | will have observed |
| Imperative | |
|---|---|
| I | - |
| you | observe |
| he/she | - |
| we | - |
| you | observe |
| they | - |
| I | - |
| you | observe |
| he/she | - |
| we | - |
| you | observe |
| they | - |
| Present | Past | Future | |
|---|---|---|---|
| I | am observing | was observing | will be observing |
| you | are observing | were observing | will be observing |
| he/she | is observing | was observing | will be observing |
| we | are observing | were observing | will be observing |
| you | are observing | were observing | will be observing |
| they | are observing | were observing | will be observing |
| I | am observing |
| you | are observing |
| he/she | is observing |
| we | are observing |
| you | are observing |
| they | are observing |
| I | was observing |
| you | were observing |
| he/she | was observing |
| we | were observing |
| you | were observing |
| they | were observing |
| I | will be observing |
| you | will be observing |
| he/she | will be observing |
| we | will be observing |
| you | will be observing |
| they | will be observing |
| Present | Past | Future | |
|---|---|---|---|
| I | have been observing | had been observing | will have been observing |
| you | have been observing | had been observing | will have been observing |
| he/she | has been observing | had been observing | will have been observing |
| we | have been observing | had been observing | will have been observing |
| you | have been observing | had been observing | will have been observing |
| they | have been observing | had been observing | will have been observing |
| I | have been observing |
| you | have been observing |
| he/she | has been observing |
| we | have been observing |
| you | have been observing |
| they | have been observing |
| I | had been observing |
| you | had been observing |
| he/she | had been observing |
| we | had been observing |
| you | had been observing |
| they | had been observing |
| I | will have been observing |
| you | will have been observing |
| he/she | will have been observing |
| we | will have been observing |
| you | will have been observing |
| they | will have been observing |