SIMPLE PRESENT
Affirmative
- I underpin
- you underpin
- she/he/it underpins
- we underpin
- you underpin
- they underpin
Negative
- I do not underpin
- you do not underpin
- she/he/it does not underpin
- we do not underpin
- you do not underpin
- they do not underpin
Interrogative
- do I underpin ?
- do you underpin ?
- does she/he/it underpin ?
- do we underpin ?
- do you underpin ?
- do they underpin ?
Negative - Interrogative
- do I not underpin ?
- do you not underpin ?
- does she/he/it not underpin ?
- do we not underpin ?
- do you not underpin ?
- do they not underpin ?
PRESENT CONTINUOUS
Affirmative
- I am underpinning
- you are underpinning
- she/he/it is underpinning
- we are underpinning
- you are underpinning
- they are underpinning
Negative
- I am not underpinning
- you are not underpinning
- she/he/it is not underpinning
- we are not underpinning
- you are not underpinning
- they are not underpinning
Interrogative
- am I underpinning ?
- are you underpinning ?
- is she/he/it underpinning ?
- are we underpinning ?
- are you underpinning ?
- are they underpinning ?
Negative - Interrogative
- am I not underpinning ?
- are you not underpinning ?
- is she/he/it not underpinning ?
- are we not underpinning ?
- are you not underpinning ?
- are they not underpinning ?
SIMPLE PAST
Affirmative
- I underpinned
- you underpinned
- she/he/it underpinned
- we underpinned
- you underpinned
- they underpinned
Negative
- I did not underpin
- you did not underpin
- she/he/it did not underpin
- we did not underpin
- you did not underpin
- they did not underpin
Interrogative
- did I underpin ?
- did you underpin ?
- did she/he/it underpin ?
- did we underpin ?
- did you underpin ?
- did they underpin ?
Negative - Interrogative
- did I not underpin ?
- did you not underpin ?
- did she/he/it not underpin ?
- did we not underpin ?
- did you not underpin ?
- did they not underpin ?
PRESENT PERFECT
Affirmative
- I have underpinned
- you have underpinned
- she/he/it has underpinned
- we have underpinned
- you have underpinned
- they have underpinned
Negative
- I have not underpinned
- you have not underpinned
- she/he/it has not underpinned
- we have not underpinned
- you have not underpinned
- they have not underpinned
Interrogative
- have I underpinned ?
- have you underpinned ?
- has she/he/it underpinned ?
- have we underpinned ?
- have you underpinned ?
- have they underpinned ?
Negative - Interrogative
- have I not underpinned ?
- have you not underpinned ?
- has she/he/it not underpinned ?
- have we not underpinned ?
- have you not underpinned ?
- have they not underpinned ?
PAST CONTINUOUS
Affirmative
- I was underpinning
- you were underpinning
- she/he/it was underpinning
- we were underpinning
- you were underpinning
- they were underpinning
Negative
- I was not underpinning
- you were not underpinning
- she/he/it was not underpinning
- you were not underpinning
- you were not underpinning
- they were not underpinning
Interrogative
- was I underpinning ?
- were you underpinning ?
- was she/he/it underpinning ?
- were we underpinning ?
- were you underpinning ?
- were they underpinning ?
Negative - Interrogative
- was I not underpinning ?
- were you not underpinning ?
- was she/he/it not underpinning ?
- were we not underpinning ?
- were you not underpinning ?
- were they not underpinning ?
PRESENT PERFECT CONTINUOUS
Affirmative
- I have been underpinning
- you have been underpinning
- she/he/it has been underpinning
- we have been underpinning
- you have been underpinning
- they have been underpinning
Negative
- I have not been underpinning
- you have not been underpinning
- she/he/it has not been underpinning
- we have not been underpinning
- you have not been underpinning
- they have not been underpinning
Interrogative
- have I been underpinning ?
- have you been underpinning ?
- has she/he/it been underpinning ?
- have we been underpinning ?
- have you been underpinning ?
- have they been underpinning ?
Negative - Interrogative
- have I not been underpinning ?
- have you not been underpinning ?
- has she/he/it not been underpinning ?
- have we not been underpinning ?
- have you not been underpinning ?
- have they not been underpinning ?
PAST PERFECT
Affirmative
- I had underpinned
- you had underpinned
- she/he/it had underpinned
- we had underpinned
- you had underpinned
- they had underpinned
Negative
- I had not underpinned
- you had not underpinned
- she/he/it had not underpinned
- we had not underpinned
- you had not underpinned
- they had not underpinned
Interrogative
- had I underpinned ?
- had you underpinned ?
- had she/he/it underpinned ?
- had we underpinned ?
- had you underpinned ?
- had they underpinned ?
Negative - Interrogative
- had I not underpinned ?
- had you not underpinned ?
- had she/he/it not underpinned ?
- had we not underpinned ?
- had you not underpinned ?
- had they not underpinned ?
PAST PERFECT CONTINUOUS
Affirmative
- I had been underpinning
- you had been underpinning
- she/he/it had been underpinning
- we had been underpinning
- you had been underpinning
- they had been underpinning
Negative
- I had not been underpinning
- you had not been underpinning
- she/he/it had not been underpinning
- we had not been underpinning
- you had not been underpinning
- they had not been underpinning
Interrogative
- had I been underpinning ?
- had you been underpinning ?
- had she/he/it been underpinning ?
- had we been underpinning ?
- had you been underpinning ?
- had they been underpinning ?
Negative - Interrogative
- had I not been underpinning ?
- had you not been underpinning ?
- had she/he/it not been underpinning ?
- had we not been underpinning ?
- had you not been underpinning ?
- had they not been underpinning ?