SIMPLE PRESENT
Affirmative
- I observe
- you observe
- she/he/it observes
- we observe
- you observe
- they observe
Negative
- I do not observe
- you do not observe
- she/he/it does not observe
- we do not observe
- you do not observe
- they do not observe
Interrogative
- do I observe ?
- do you observe ?
- does she/he/it observe ?
- do we observe ?
- do you observe ?
- do they observe ?
Negative - Interrogative
- do I not observe ?
- do you not observe ?
- does she/he/it not observe ?
- do we not observe ?
- do you not observe ?
- do they not observe ?
PRESENT CONTINUOUS
Affirmative
- I am observing
- you are observing
- she/he/it is observing
- we are observing
- you are observing
- they are observing
Negative
- I am not observing
- you are not observing
- she/he/it is not observing
- we are not observing
- you are not observing
- they are not observing
Interrogative
- am I observing ?
- are you observing ?
- is she/he/it observing ?
- are we observing ?
- are you observing ?
- are they observing ?
Negative - Interrogative
- am I not observing ?
- are you not observing ?
- is she/he/it not observing ?
- are we not observing ?
- are you not observing ?
- are they not observing ?
SIMPLE PAST
Affirmative
- I observed
- you observed
- she/he/it observed
- we observed
- you observed
- they observed
Negative
- I did not observe
- you did not observe
- she/he/it did not observe
- we did not observe
- you did not observe
- they did not observe
Interrogative
- did I observe ?
- did you observe ?
- did she/he/it observe ?
- did we observe ?
- did you observe ?
- did they observe ?
Negative - Interrogative
- did I not observe ?
- did you not observe ?
- did she/he/it not observe ?
- did we not observe ?
- did you not observe ?
- did they not observe ?
PRESENT PERFECT
Affirmative
- I have observed
- you have observed
- she/he/it has observed
- we have observed
- you have observed
- they have observed
Negative
- I have not observed
- you have not observed
- she/he/it has not observed
- we have not observed
- you have not observed
- they have not observed
Interrogative
- have I observed ?
- have you observed ?
- has she/he/it observed ?
- have we observed ?
- have you observed ?
- have they observed ?
Negative - Interrogative
- have I not observed ?
- have you not observed ?
- has she/he/it not observed ?
- have we not observed ?
- have you not observed ?
- have they not observed ?
PAST CONTINUOUS
Affirmative
- I was observing
- you were observing
- she/he/it was observing
- we were observing
- you were observing
- they were observing
Negative
- I was not observing
- you were not observing
- she/he/it was not observing
- you were not observing
- you were not observing
- they were not observing
Interrogative
- was I observing ?
- were you observing ?
- was she/he/it observing ?
- were we observing ?
- were you observing ?
- were they observing ?
Negative - Interrogative
- was I not observing ?
- were you not observing ?
- was she/he/it not observing ?
- were we not observing ?
- were you not observing ?
- were they not observing ?
PRESENT PERFECT CONTINUOUS
Affirmative
- I have been observing
- you have been observing
- she/he/it has been observing
- we have been observing
- you have been observing
- they have been observing
Negative
- I have not been observing
- you have not been observing
- she/he/it has not been observing
- we have not been observing
- you have not been observing
- they have not been observing
Interrogative
- have I been observing ?
- have you been observing ?
- has she/he/it been observing ?
- have we been observing ?
- have you been observing ?
- have they been observing ?
Negative - Interrogative
- have I not been observing ?
- have you not been observing ?
- has she/he/it not been observing ?
- have we not been observing ?
- have you not been observing ?
- have they not been observing ?
PAST PERFECT
Affirmative
- I had observed
- you had observed
- she/he/it had observed
- we had observed
- you had observed
- they had observed
Negative
- I had not observed
- you had not observed
- she/he/it had not observed
- we had not observed
- you had not observed
- they had not observed
Interrogative
- had I observed ?
- had you observed ?
- had she/he/it observed ?
- had we observed ?
- had you observed ?
- had they observed ?
Negative - Interrogative
- had I not observed ?
- had you not observed ?
- had she/he/it not observed ?
- had we not observed ?
- had you not observed ?
- had they not observed ?
PAST PERFECT CONTINUOUS
Affirmative
- I had been observing
- you had been observing
- she/he/it had been observing
- we had been observing
- you had been observing
- they had been observing
Negative
- I had not been observing
- you had not been observing
- she/he/it had not been observing
- we had not been observing
- you had not been observing
- they had not been observing
Interrogative
- had I been observing ?
- had you been observing ?
- had she/he/it been observing ?
- had we been observing ?
- had you been observing ?
- had they been observing ?
Negative - Interrogative
- had I not been observing ?
- had you not been observing ?
- had she/he/it not been observing ?
- had we not been observing ?
- had you not been observing ?
- had they not been observing ?