| sg1st | sg2nd | sg3rd | pl1st | pl2nd | pl3rd | |
|---|---|---|---|---|---|---|
| Simple present | observe | observe | observes | observe | observe | observe |
| Present continuous | am observing | are observing | is observing | are observing | are observing | are observing |
| Simple past | observed | observed | observed | observed | observed | observed |
| Past continuous | was observing | were observing | was observing | were observing | were observing | were observing |
| Simple future | will observe | will observe | will observe | will observe | will observe | will observe |
| Future continuous | will be observing | will be observing | will be observing | will be observing | will be observing | will be observing |
| Present perfect | have observed | have observed | has observed | have observed | have observed | have observed |
| Present perfect continuous | have been observing | have been observing | has been observing | have been observing | have been observing | have been observing |
| Present continuous | am observing | are observing | is observing | are observing | are observing | are observing |
| Past perfect | had observed | had observed | had observed | had observed | had observed | had observed |
| Past perfect continuous | had been observing | had been observing | had been observing | had been observing | had been observing | had been observing |
| Future perfect | will have observed | will have observed | will have observed | will have observed | will have observed | will have observed |
| Future perfect continuous | will have been observing | will have been observing | will have been observing | will have been observing | will have been observing | will have been observing |
| sg1st | sg2nd | sg3rd | pl1st | pl2nd | pl3rd | |
|---|---|---|---|---|---|---|
| Simple present | don't observe | don't observe | doesn't observe | don't observe | don't observe | don't observe |
| Present continuous | am not observing | are not observing | is not observing | are not observing | are not observing | are not observing |
| Simple past | didn't observe | didn't observe | didn't observe | didn't observe | didn't observe | didn't observe |
| Past continuous | was not observing | were not observing | was not observing | were not observing | were not observing | were not observing |
| Simple future | won't observe | won't observe | won't observe | won't observe | won't observe | won't observe |
| Future continuous | will not be observing | will not be observing | will not be observing | will not be observing | will not be observing | will not be observing |
| Present perfect | have not observed | have not observed | has not observed | have not observed | have not observed | have not observed |
| Present perfect continuous | have not been observing | have not been observing | has not been observing | have not been observing | have not been observing | have not been observing |
| Present continuous | am not observing | are not observing | is not observing | are not observing | are not observing | are not observing |
| Past perfect | had not observed | had not observed | had not observed | had not observed | had not observed | had not observed |
| Past perfect continuous | had not been observing | had not been observing | had not been observing | had not been observing | had not been observing | had not been observing |
| Future perfect | will have not observed | will have not observed | will have not observed | will have not observed | will have not observed | will have not observed |
| Future perfect continuous | will have not been observing | will have not been observing | will have not been observing | will have not been observing | will have not been observing | will have not been observing |