SIMPLE PRESENT
Affirmative
- I knock
- you knock
- she/he/it knocks
- we knock
- you knock
- they knock
Negative
- I do not knock
- you do not knock
- she/he/it does not knock
- we do not knock
- you do not knock
- they do not knock
Interrogative
- do I knock ?
- do you knock ?
- does she/he/it knock ?
- do we knock ?
- do you knock ?
- do they knock ?
Negative - Interrogative
- do I not knock ?
- do you not knock ?
- does she/he/it not knock ?
- do we not knock ?
- do you not knock ?
- do they not knock ?
PRESENT CONTINUOUS
Affirmative
- I am knocking
- you are knocking
- she/he/it is knocking
- we are knocking
- you are knocking
- they are knocking
Negative
- I am not knocking
- you are not knocking
- she/he/it is not knocking
- we are not knocking
- you are not knocking
- they are not knocking
Interrogative
- am I knocking ?
- are you knocking ?
- is she/he/it knocking ?
- are we knocking ?
- are you knocking ?
- are they knocking ?
Negative - Interrogative
- am I not knocking ?
- are you not knocking ?
- is she/he/it not knocking ?
- are we not knocking ?
- are you not knocking ?
- are they not knocking ?
SIMPLE PAST
Affirmative
- I knocked
- you knocked
- she/he/it knocked
- we knocked
- you knocked
- they knocked
Negative
- I did not knock
- you did not knock
- she/he/it did not knock
- we did not knock
- you did not knock
- they did not knock
Interrogative
- did I knock ?
- did you knock ?
- did she/he/it knock ?
- did we knock ?
- did you knock ?
- did they knock ?
Negative - Interrogative
- did I not knock ?
- did you not knock ?
- did she/he/it not knock ?
- did we not knock ?
- did you not knock ?
- did they not knock ?
PRESENT PERFECT
Affirmative
- I have knocked
- you have knocked
- she/he/it has knocked
- we have knocked
- you have knocked
- they have knocked
Negative
- I have not knocked
- you have not knocked
- she/he/it has not knocked
- we have not knocked
- you have not knocked
- they have not knocked
Interrogative
- have I knocked ?
- have you knocked ?
- has she/he/it knocked ?
- have we knocked ?
- have you knocked ?
- have they knocked ?
Negative - Interrogative
- have I not knocked ?
- have you not knocked ?
- has she/he/it not knocked ?
- have we not knocked ?
- have you not knocked ?
- have they not knocked ?
PAST CONTINUOUS
Affirmative
- I was knocking
- you were knocking
- she/he/it was knocking
- we were knocking
- you were knocking
- they were knocking
Negative
- I was not knocking
- you were not knocking
- she/he/it was not knocking
- you were not knocking
- you were not knocking
- they were not knocking
Interrogative
- was I knocking ?
- were you knocking ?
- was she/he/it knocking ?
- were we knocking ?
- were you knocking ?
- were they knocking ?
Negative - Interrogative
- was I not knocking ?
- were you not knocking ?
- was she/he/it not knocking ?
- were we not knocking ?
- were you not knocking ?
- were they not knocking ?
PRESENT PERFECT CONTINUOUS
Affirmative
- I have been knocking
- you have been knocking
- she/he/it has been knocking
- we have been knocking
- you have been knocking
- they have been knocking
Negative
- I have not been knocking
- you have not been knocking
- she/he/it has not been knocking
- we have not been knocking
- you have not been knocking
- they have not been knocking
Interrogative
- have I been knocking ?
- have you been knocking ?
- has she/he/it been knocking ?
- have we been knocking ?
- have you been knocking ?
- have they been knocking ?
Negative - Interrogative
- have I not been knocking ?
- have you not been knocking ?
- has she/he/it not been knocking ?
- have we not been knocking ?
- have you not been knocking ?
- have they not been knocking ?
PAST PERFECT
Affirmative
- I had knocked
- you had knocked
- she/he/it had knocked
- we had knocked
- you had knocked
- they had knocked
Negative
- I had not knocked
- you had not knocked
- she/he/it had not knocked
- we had not knocked
- you had not knocked
- they had not knocked
Interrogative
- had I knocked ?
- had you knocked ?
- had she/he/it knocked ?
- had we knocked ?
- had you knocked ?
- had they knocked ?
Negative - Interrogative
- had I not knocked ?
- had you not knocked ?
- had she/he/it not knocked ?
- had we not knocked ?
- had you not knocked ?
- had they not knocked ?
PAST PERFECT CONTINUOUS
Affirmative
- I had been knocking
- you had been knocking
- she/he/it had been knocking
- we had been knocking
- you had been knocking
- they had been knocking
Negative
- I had not been knocking
- you had not been knocking
- she/he/it had not been knocking
- we had not been knocking
- you had not been knocking
- they had not been knocking
Interrogative
- had I been knocking ?
- had you been knocking ?
- had she/he/it been knocking ?
- had we been knocking ?
- had you been knocking ?
- had they been knocking ?
Negative - Interrogative
- had I not been knocking ?
- had you not been knocking ?
- had she/he/it not been knocking ?
- had we not been knocking ?
- had you not been knocking ?
- had they not been knocking ?