SIMPLE PRESENT

Affirmative

• I lack
• you lack
• she/he/it lacks
• we lack
• you lack
• they lack

Negative

• I do not lack
• you do not lack
• she/he/it does not lack
• we do not lack
• you do not lack
• they do not lack

Interrogative

• do I lack ?
• do you lack ?
• does she/he/it lack ?
• do we lack ?
• do you lack ?
• do they lack ?

Negative - Interrogative

• do I not lack ?
• do you not lack ?
• does she/he/it not lack ?
• do we not lack ?
• do you not lack ?
• do they not lack ?

PRESENT CONTINUOUS

Affirmative

• I am lacking
• you are lacking
• she/he/it is lacking
• we are lacking
• you are lacking
• they are lacking

Negative

• I am not lacking
• you are not lacking
• she/he/it is not lacking
• we are not lacking
• you are not lacking
• they are not lacking

Interrogative

• am I lacking ?
• are you lacking ?
• is she/he/it lacking ?
• are we lacking ?
• are you lacking ?
• are they lacking ?

Negative - Interrogative

• am I not lacking ?
• are you not lacking ?
• is she/he/it not lacking ?
• are we not lacking ?
• are you not lacking ?
• are they not lacking ?

SIMPLE PAST

Affirmative

• I lacked
• you lacked
• she/he/it lacked
• we lacked
• you lacked
• they lacked

Negative

• I did not lack
• you did not lack
• she/he/it did not lack
• we did not lack
• you did not lack
• they did not lack

Interrogative

• did I lack ?
• did you lack ?
• did she/he/it lack ?
• did we lack ?
• did you lack ?
• did they lack ?

Negative - Interrogative

• did I not lack ?
• did you not lack ?
• did she/he/it not lack ?
• did we not lack ?
• did you not lack ?
• did they not lack ?

PRESENT PERFECT

Affirmative

• I have lacked
• you have lacked
• she/he/it has lacked
• we have lacked
• you have lacked
• they have lacked

Negative

• I have not lacked
• you have not lacked
• she/he/it has not lacked
• we have not lacked
• you have not lacked
• they have not lacked

Interrogative

• have I lacked ?
• have you lacked ?
• has she/he/it lacked ?
• have we lacked ?
• have you lacked ?
• have they lacked ?

Negative - Interrogative

• have I not lacked ?
• have you not lacked ?
• has she/he/it not lacked ?
• have we not lacked ?
• have you not lacked ?
• have they not lacked ?

PAST CONTINUOUS

Affirmative

• I was lacking
• you were lacking
• she/he/it was lacking
• we were lacking
• you were lacking
• they were lacking

Negative

• I was not lacking
• you were not lacking
• she/he/it was not lacking
• you were not lacking
• you were not lacking
• they were not lacking

Interrogative

• was I lacking ?
• were you lacking ?
• was she/he/it lacking ?
• were we lacking ?
• were you lacking ?
• were they lacking ?

Negative - Interrogative

• was I not lacking ?
• were you not lacking ?
• was she/he/it not lacking ?
• were we not lacking ?
• were you not lacking ?
• were they not lacking ?

PRESENT PERFECT CONTINUOUS

Affirmative

• I have been lacking
• you have been lacking
• she/he/it has been lacking
• we have been lacking
• you have been lacking
• they have been lacking

Negative

• I have not been lacking
• you have not been lacking
• she/he/it has not been lacking
• we have not been lacking
• you have not been lacking
• they have not been lacking

Interrogative

• have I been lacking ?
• have you been lacking ?
• has she/he/it been lacking ?
• have we been lacking ?
• have you been lacking ?
• have they been lacking ?

Negative - Interrogative

• have I not been lacking ?
• have you not been lacking ?
• has she/he/it not been lacking ?
• have we not been lacking ?
• have you not been lacking ?
• have they not been lacking ?

PAST PERFECT

Affirmative

• I had lacked
• you had lacked
• she/he/it had lacked
• we had lacked
• you had lacked
• they had lacked

Negative

• I had not lacked
• you had not lacked
• she/he/it had not lacked
• we had not lacked
• you had not lacked
• they had not lacked

Interrogative

• had I lacked ?
• had you lacked ?
• had she/he/it lacked ?
• had we lacked ?
• had you lacked ?
• had they lacked ?

Negative - Interrogative

• had I not lacked ?
• had you not lacked ?
• had she/he/it not lacked ?
• had we not lacked ?
• had you not lacked ?
• had they not lacked ?

PAST PERFECT CONTINUOUS

Affirmative

• I had been lacking
• you had been lacking
• she/he/it had been lacking
• we had been lacking
• you had been lacking
• they had been lacking

Negative

• I had not been lacking
• you had not been lacking
• she/he/it had not been lacking
• we had not been lacking
• you had not been lacking
• they had not been lacking

Interrogative

• had I been lacking ?
• had you been lacking ?
• had she/he/it been lacking ?
• had we been lacking ?
• had you been lacking ?
• had they been lacking ?

Negative - Interrogative

• had I not been lacking ?
• had you not been lacking ?
• had she/he/it not been lacking ?
• had we not been lacking ?
• had you not been lacking ?
• had they not been lacking ?