SIMPLE PRESENT
Affirmative
- I filter
- you filter
- she/he/it filters
- we filter
- you filter
- they filter
Negative
- I do not filter
- you do not filter
- she/he/it does not filter
- we do not filter
- you do not filter
- they do not filter
Interrogative
- do I filter ?
- do you filter ?
- does she/he/it filter ?
- do we filter ?
- do you filter ?
- do they filter ?
Negative - Interrogative
- do I not filter ?
- do you not filter ?
- does she/he/it not filter ?
- do we not filter ?
- do you not filter ?
- do they not filter ?
PRESENT CONTINUOUS
Affirmative
- I am filtering
- you are filtering
- she/he/it is filtering
- we are filtering
- you are filtering
- they are filtering
Negative
- I am not filtering
- you are not filtering
- she/he/it is not filtering
- we are not filtering
- you are not filtering
- they are not filtering
Interrogative
- am I filtering ?
- are you filtering ?
- is she/he/it filtering ?
- are we filtering ?
- are you filtering ?
- are they filtering ?
Negative - Interrogative
- am I not filtering ?
- are you not filtering ?
- is she/he/it not filtering ?
- are we not filtering ?
- are you not filtering ?
- are they not filtering ?
SIMPLE PAST
Affirmative
- I filtered
- you filtered
- she/he/it filtered
- we filtered
- you filtered
- they filtered
Negative
- I did not filter
- you did not filter
- she/he/it did not filter
- we did not filter
- you did not filter
- they did not filter
Interrogative
- did I filter ?
- did you filter ?
- did she/he/it filter ?
- did we filter ?
- did you filter ?
- did they filter ?
Negative - Interrogative
- did I not filter ?
- did you not filter ?
- did she/he/it not filter ?
- did we not filter ?
- did you not filter ?
- did they not filter ?
PRESENT PERFECT
Affirmative
- I have filtered
- you have filtered
- she/he/it has filtered
- we have filtered
- you have filtered
- they have filtered
Negative
- I have not filtered
- you have not filtered
- she/he/it has not filtered
- we have not filtered
- you have not filtered
- they have not filtered
Interrogative
- have I filtered ?
- have you filtered ?
- has she/he/it filtered ?
- have we filtered ?
- have you filtered ?
- have they filtered ?
Negative - Interrogative
- have I not filtered ?
- have you not filtered ?
- has she/he/it not filtered ?
- have we not filtered ?
- have you not filtered ?
- have they not filtered ?
PAST CONTINUOUS
Affirmative
- I was filtering
- you were filtering
- she/he/it was filtering
- we were filtering
- you were filtering
- they were filtering
Negative
- I was not filtering
- you were not filtering
- she/he/it was not filtering
- you were not filtering
- you were not filtering
- they were not filtering
Interrogative
- was I filtering ?
- were you filtering ?
- was she/he/it filtering ?
- were we filtering ?
- were you filtering ?
- were they filtering ?
Negative - Interrogative
- was I not filtering ?
- were you not filtering ?
- was she/he/it not filtering ?
- were we not filtering ?
- were you not filtering ?
- were they not filtering ?
PRESENT PERFECT CONTINUOUS
Affirmative
- I have been filtering
- you have been filtering
- she/he/it has been filtering
- we have been filtering
- you have been filtering
- they have been filtering
Negative
- I have not been filtering
- you have not been filtering
- she/he/it has not been filtering
- we have not been filtering
- you have not been filtering
- they have not been filtering
Interrogative
- have I been filtering ?
- have you been filtering ?
- has she/he/it been filtering ?
- have we been filtering ?
- have you been filtering ?
- have they been filtering ?
Negative - Interrogative
- have I not been filtering ?
- have you not been filtering ?
- has she/he/it not been filtering ?
- have we not been filtering ?
- have you not been filtering ?
- have they not been filtering ?
PAST PERFECT
Affirmative
- I had filtered
- you had filtered
- she/he/it had filtered
- we had filtered
- you had filtered
- they had filtered
Negative
- I had not filtered
- you had not filtered
- she/he/it had not filtered
- we had not filtered
- you had not filtered
- they had not filtered
Interrogative
- had I filtered ?
- had you filtered ?
- had she/he/it filtered ?
- had we filtered ?
- had you filtered ?
- had they filtered ?
Negative - Interrogative
- had I not filtered ?
- had you not filtered ?
- had she/he/it not filtered ?
- had we not filtered ?
- had you not filtered ?
- had they not filtered ?
PAST PERFECT CONTINUOUS
Affirmative
- I had been filtering
- you had been filtering
- she/he/it had been filtering
- we had been filtering
- you had been filtering
- they had been filtering
Negative
- I had not been filtering
- you had not been filtering
- she/he/it had not been filtering
- we had not been filtering
- you had not been filtering
- they had not been filtering
Interrogative
- had I been filtering ?
- had you been filtering ?
- had she/he/it been filtering ?
- had we been filtering ?
- had you been filtering ?
- had they been filtering ?
Negative - Interrogative
- had I not been filtering ?
- had you not been filtering ?
- had she/he/it not been filtering ?
- had we not been filtering ?
- had you not been filtering ?
- had they not been filtering ?