SIMPLE PRESENT
Affirmative
- I catheterize
- you catheterize
- she/he/it catheterizes
- we catheterize
- you catheterize
- they catheterize
Negative
- I do not catheterize
- you do not catheterize
- she/he/it does not catheterize
- we do not catheterize
- you do not catheterize
- they do not catheterize
Interrogative
- do I catheterize ?
- do you catheterize ?
- does she/he/it catheterize ?
- do we catheterize ?
- do you catheterize ?
- do they catheterize ?
Negative - Interrogative
- do I not catheterize ?
- do you not catheterize ?
- does she/he/it not catheterize ?
- do we not catheterize ?
- do you not catheterize ?
- do they not catheterize ?
PRESENT CONTINUOUS
Affirmative
- I am catheterizing
- you are catheterizing
- she/he/it is catheterizing
- we are catheterizing
- you are catheterizing
- they are catheterizing
Negative
- I am not catheterizing
- you are not catheterizing
- she/he/it is not catheterizing
- we are not catheterizing
- you are not catheterizing
- they are not catheterizing
Interrogative
- am I catheterizing ?
- are you catheterizing ?
- is she/he/it catheterizing ?
- are we catheterizing ?
- are you catheterizing ?
- are they catheterizing ?
Negative - Interrogative
- am I not catheterizing ?
- are you not catheterizing ?
- is she/he/it not catheterizing ?
- are we not catheterizing ?
- are you not catheterizing ?
- are they not catheterizing ?
SIMPLE PAST
Affirmative
- I catheterized
- you catheterized
- she/he/it catheterized
- we catheterized
- you catheterized
- they catheterized
Negative
- I did not catheterize
- you did not catheterize
- she/he/it did not catheterize
- we did not catheterize
- you did not catheterize
- they did not catheterize
Interrogative
- did I catheterize ?
- did you catheterize ?
- did she/he/it catheterize ?
- did we catheterize ?
- did you catheterize ?
- did they catheterize ?
Negative - Interrogative
- did I not catheterize ?
- did you not catheterize ?
- did she/he/it not catheterize ?
- did we not catheterize ?
- did you not catheterize ?
- did they not catheterize ?
PRESENT PERFECT
Affirmative
- I have catheterized
- you have catheterized
- she/he/it has catheterized
- we have catheterized
- you have catheterized
- they have catheterized
Negative
- I have not catheterized
- you have not catheterized
- she/he/it has not catheterized
- we have not catheterized
- you have not catheterized
- they have not catheterized
Interrogative
- have I catheterized ?
- have you catheterized ?
- has she/he/it catheterized ?
- have we catheterized ?
- have you catheterized ?
- have they catheterized ?
Negative - Interrogative
- have I not catheterized ?
- have you not catheterized ?
- has she/he/it not catheterized ?
- have we not catheterized ?
- have you not catheterized ?
- have they not catheterized ?
PAST CONTINUOUS
Affirmative
- I was catheterizing
- you were catheterizing
- she/he/it was catheterizing
- we were catheterizing
- you were catheterizing
- they were catheterizing
Negative
- I was not catheterizing
- you were not catheterizing
- she/he/it was not catheterizing
- you were not catheterizing
- you were not catheterizing
- they were not catheterizing
Interrogative
- was I catheterizing ?
- were you catheterizing ?
- was she/he/it catheterizing ?
- were we catheterizing ?
- were you catheterizing ?
- were they catheterizing ?
Negative - Interrogative
- was I not catheterizing ?
- were you not catheterizing ?
- was she/he/it not catheterizing ?
- were we not catheterizing ?
- were you not catheterizing ?
- were they not catheterizing ?
PRESENT PERFECT CONTINUOUS
Affirmative
- I have been catheterizing
- you have been catheterizing
- she/he/it has been catheterizing
- we have been catheterizing
- you have been catheterizing
- they have been catheterizing
Negative
- I have not been catheterizing
- you have not been catheterizing
- she/he/it has not been catheterizing
- we have not been catheterizing
- you have not been catheterizing
- they have not been catheterizing
Interrogative
- have I been catheterizing ?
- have you been catheterizing ?
- has she/he/it been catheterizing ?
- have we been catheterizing ?
- have you been catheterizing ?
- have they been catheterizing ?
Negative - Interrogative
- have I not been catheterizing ?
- have you not been catheterizing ?
- has she/he/it not been catheterizing ?
- have we not been catheterizing ?
- have you not been catheterizing ?
- have they not been catheterizing ?
PAST PERFECT
Affirmative
- I had catheterized
- you had catheterized
- she/he/it had catheterized
- we had catheterized
- you had catheterized
- they had catheterized
Negative
- I had not catheterized
- you had not catheterized
- she/he/it had not catheterized
- we had not catheterized
- you had not catheterized
- they had not catheterized
Interrogative
- had I catheterized ?
- had you catheterized ?
- had she/he/it catheterized ?
- had we catheterized ?
- had you catheterized ?
- had they catheterized ?
Negative - Interrogative
- had I not catheterized ?
- had you not catheterized ?
- had she/he/it not catheterized ?
- had we not catheterized ?
- had you not catheterized ?
- had they not catheterized ?
PAST PERFECT CONTINUOUS
Affirmative
- I had been catheterizing
- you had been catheterizing
- she/he/it had been catheterizing
- we had been catheterizing
- you had been catheterizing
- they had been catheterizing
Negative
- I had not been catheterizing
- you had not been catheterizing
- she/he/it had not been catheterizing
- we had not been catheterizing
- you had not been catheterizing
- they had not been catheterizing
Interrogative
- had I been catheterizing ?
- had you been catheterizing ?
- had she/he/it been catheterizing ?
- had we been catheterizing ?
- had you been catheterizing ?
- had they been catheterizing ?
Negative - Interrogative
- had I not been catheterizing ?
- had you not been catheterizing ?
- had she/he/it not been catheterizing ?
- had we not been catheterizing ?
- had you not been catheterizing ?
- had they not been catheterizing ?