SIMPLE PRESENT
Affirmative
- I investigate
- you investigate
- she/he/it investigates
- we investigate
- you investigate
- they investigate
Negative
- I do not investigate
- you do not investigate
- she/he/it does not investigate
- we do not investigate
- you do not investigate
- they do not investigate
Interrogative
- do I investigate ?
- do you investigate ?
- does she/he/it investigate ?
- do we investigate ?
- do you investigate ?
- do they investigate ?
Negative - Interrogative
- do I not investigate ?
- do you not investigate ?
- does she/he/it not investigate ?
- do we not investigate ?
- do you not investigate ?
- do they not investigate ?
PRESENT CONTINUOUS
Affirmative
- I am investigating
- you are investigating
- she/he/it is investigating
- we are investigating
- you are investigating
- they are investigating
Negative
- I am not investigating
- you are not investigating
- she/he/it is not investigating
- we are not investigating
- you are not investigating
- they are not investigating
Interrogative
- am I investigating ?
- are you investigating ?
- is she/he/it investigating ?
- are we investigating ?
- are you investigating ?
- are they investigating ?
Negative - Interrogative
- am I not investigating ?
- are you not investigating ?
- is she/he/it not investigating ?
- are we not investigating ?
- are you not investigating ?
- are they not investigating ?
SIMPLE PAST
Affirmative
- I investigated
- you investigated
- she/he/it investigated
- we investigated
- you investigated
- they investigated
Negative
- I did not investigate
- you did not investigate
- she/he/it did not investigate
- we did not investigate
- you did not investigate
- they did not investigate
Interrogative
- did I investigate ?
- did you investigate ?
- did she/he/it investigate ?
- did we investigate ?
- did you investigate ?
- did they investigate ?
Negative - Interrogative
- did I not investigate ?
- did you not investigate ?
- did she/he/it not investigate ?
- did we not investigate ?
- did you not investigate ?
- did they not investigate ?
PRESENT PERFECT
Affirmative
- I have investigated
- you have investigated
- she/he/it has investigated
- we have investigated
- you have investigated
- they have investigated
Negative
- I have not investigated
- you have not investigated
- she/he/it has not investigated
- we have not investigated
- you have not investigated
- they have not investigated
Interrogative
- have I investigated ?
- have you investigated ?
- has she/he/it investigated ?
- have we investigated ?
- have you investigated ?
- have they investigated ?
Negative - Interrogative
- have I not investigated ?
- have you not investigated ?
- has she/he/it not investigated ?
- have we not investigated ?
- have you not investigated ?
- have they not investigated ?
PAST CONTINUOUS
Affirmative
- I was investigating
- you were investigating
- she/he/it was investigating
- we were investigating
- you were investigating
- they were investigating
Negative
- I was not investigating
- you were not investigating
- she/he/it was not investigating
- you were not investigating
- you were not investigating
- they were not investigating
Interrogative
- was I investigating ?
- were you investigating ?
- was she/he/it investigating ?
- were we investigating ?
- were you investigating ?
- were they investigating ?
Negative - Interrogative
- was I not investigating ?
- were you not investigating ?
- was she/he/it not investigating ?
- were we not investigating ?
- were you not investigating ?
- were they not investigating ?
PRESENT PERFECT CONTINUOUS
Affirmative
- I have been investigating
- you have been investigating
- she/he/it has been investigating
- we have been investigating
- you have been investigating
- they have been investigating
Negative
- I have not been investigating
- you have not been investigating
- she/he/it has not been investigating
- we have not been investigating
- you have not been investigating
- they have not been investigating
Interrogative
- have I been investigating ?
- have you been investigating ?
- has she/he/it been investigating ?
- have we been investigating ?
- have you been investigating ?
- have they been investigating ?
Negative - Interrogative
- have I not been investigating ?
- have you not been investigating ?
- has she/he/it not been investigating ?
- have we not been investigating ?
- have you not been investigating ?
- have they not been investigating ?
PAST PERFECT
Affirmative
- I had investigated
- you had investigated
- she/he/it had investigated
- we had investigated
- you had investigated
- they had investigated
Negative
- I had not investigated
- you had not investigated
- she/he/it had not investigated
- we had not investigated
- you had not investigated
- they had not investigated
Interrogative
- had I investigated ?
- had you investigated ?
- had she/he/it investigated ?
- had we investigated ?
- had you investigated ?
- had they investigated ?
Negative - Interrogative
- had I not investigated ?
- had you not investigated ?
- had she/he/it not investigated ?
- had we not investigated ?
- had you not investigated ?
- had they not investigated ?
PAST PERFECT CONTINUOUS
Affirmative
- I had been investigating
- you had been investigating
- she/he/it had been investigating
- we had been investigating
- you had been investigating
- they had been investigating
Negative
- I had not been investigating
- you had not been investigating
- she/he/it had not been investigating
- we had not been investigating
- you had not been investigating
- they had not been investigating
Interrogative
- had I been investigating ?
- had you been investigating ?
- had she/he/it been investigating ?
- had we been investigating ?
- had you been investigating ?
- had they been investigating ?
Negative - Interrogative
- had I not been investigating ?
- had you not been investigating ?
- had she/he/it not been investigating ?
- had we not been investigating ?
- had you not been investigating ?
- had they not been investigating ?