SIMPLE PRESENT

Affirmative

• I strengthen
• you strengthen
• she/he/it strengthens
• we strengthen
• you strengthen
• they strengthen

Negative

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

Interrogative

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

Negative - Interrogative

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

PRESENT CONTINUOUS

Affirmative

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

Negative

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

Interrogative

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

Negative - Interrogative

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

SIMPLE PAST

Affirmative

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

Negative

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

Interrogative

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

Negative - Interrogative

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

PRESENT PERFECT

Affirmative

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

Negative

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

Interrogative

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

Negative - Interrogative

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

PAST CONTINUOUS

Affirmative

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

Negative

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

Interrogative

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

Negative - Interrogative

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

PRESENT PERFECT CONTINUOUS

Affirmative

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

Negative

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

Interrogative

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

Negative - Interrogative

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

PAST PERFECT

Affirmative

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

Negative

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

Interrogative

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

Negative - Interrogative

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

PAST PERFECT CONTINUOUS

Affirmative

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

Negative

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

Interrogative

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

Negative - Interrogative

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