SIMPLE PRESENT
Affirmative
- I bill
- you bill
- she/he/it bills
- we bill
- you bill
- they bill
Negative
- I do not bill
- you do not bill
- she/he/it does not bill
- we do not bill
- you do not bill
- they do not bill
Interrogative
- do I bill ?
- do you bill ?
- does she/he/it bill ?
- do we bill ?
- do you bill ?
- do they bill ?
Negative - Interrogative
- do I not bill ?
- do you not bill ?
- does she/he/it not bill ?
- do we not bill ?
- do you not bill ?
- do they not bill ?
PRESENT CONTINUOUS
Affirmative
- I am billing
- you are billing
- she/he/it is billing
- we are billing
- you are billing
- they are billing
Negative
- I am not billing
- you are not billing
- she/he/it is not billing
- we are not billing
- you are not billing
- they are not billing
Interrogative
- am I billing ?
- are you billing ?
- is she/he/it billing ?
- are we billing ?
- are you billing ?
- are they billing ?
Negative - Interrogative
- am I not billing ?
- are you not billing ?
- is she/he/it not billing ?
- are we not billing ?
- are you not billing ?
- are they not billing ?
SIMPLE PAST
Affirmative
- I billed
- you billed
- she/he/it billed
- we billed
- you billed
- they billed
Negative
- I did not bill
- you did not bill
- she/he/it did not bill
- we did not bill
- you did not bill
- they did not bill
Interrogative
- did I bill ?
- did you bill ?
- did she/he/it bill ?
- did we bill ?
- did you bill ?
- did they bill ?
Negative - Interrogative
- did I not bill ?
- did you not bill ?
- did she/he/it not bill ?
- did we not bill ?
- did you not bill ?
- did they not bill ?
PRESENT PERFECT
Affirmative
- I have billed
- you have billed
- she/he/it has billed
- we have billed
- you have billed
- they have billed
Negative
- I have not billed
- you have not billed
- she/he/it has not billed
- we have not billed
- you have not billed
- they have not billed
Interrogative
- have I billed ?
- have you billed ?
- has she/he/it billed ?
- have we billed ?
- have you billed ?
- have they billed ?
Negative - Interrogative
- have I not billed ?
- have you not billed ?
- has she/he/it not billed ?
- have we not billed ?
- have you not billed ?
- have they not billed ?
PAST CONTINUOUS
Affirmative
- I was billing
- you were billing
- she/he/it was billing
- we were billing
- you were billing
- they were billing
Negative
- I was not billing
- you were not billing
- she/he/it was not billing
- you were not billing
- you were not billing
- they were not billing
Interrogative
- was I billing ?
- were you billing ?
- was she/he/it billing ?
- were we billing ?
- were you billing ?
- were they billing ?
Negative - Interrogative
- was I not billing ?
- were you not billing ?
- was she/he/it not billing ?
- were we not billing ?
- were you not billing ?
- were they not billing ?
PRESENT PERFECT CONTINUOUS
Affirmative
- I have been billing
- you have been billing
- she/he/it has been billing
- we have been billing
- you have been billing
- they have been billing
Negative
- I have not been billing
- you have not been billing
- she/he/it has not been billing
- we have not been billing
- you have not been billing
- they have not been billing
Interrogative
- have I been billing ?
- have you been billing ?
- has she/he/it been billing ?
- have we been billing ?
- have you been billing ?
- have they been billing ?
Negative - Interrogative
- have I not been billing ?
- have you not been billing ?
- has she/he/it not been billing ?
- have we not been billing ?
- have you not been billing ?
- have they not been billing ?
PAST PERFECT
Affirmative
- I had billed
- you had billed
- she/he/it had billed
- we had billed
- you had billed
- they had billed
Negative
- I had not billed
- you had not billed
- she/he/it had not billed
- we had not billed
- you had not billed
- they had not billed
Interrogative
- had I billed ?
- had you billed ?
- had she/he/it billed ?
- had we billed ?
- had you billed ?
- had they billed ?
Negative - Interrogative
- had I not billed ?
- had you not billed ?
- had she/he/it not billed ?
- had we not billed ?
- had you not billed ?
- had they not billed ?
PAST PERFECT CONTINUOUS
Affirmative
- I had been billing
- you had been billing
- she/he/it had been billing
- we had been billing
- you had been billing
- they had been billing
Negative
- I had not been billing
- you had not been billing
- she/he/it had not been billing
- we had not been billing
- you had not been billing
- they had not been billing
Interrogative
- had I been billing ?
- had you been billing ?
- had she/he/it been billing ?
- had we been billing ?
- had you been billing ?
- had they been billing ?
Negative - Interrogative
- had I not been billing ?
- had you not been billing ?
- had she/he/it not been billing ?
- had we not been billing ?
- had you not been billing ?
- had they not been billing ?