Conjugation of verb "To improve"
Negative
He/She/It does not improve.
Present Simple Continuous
Negative
He/She/It is not improving.
Negative
He/She/It did not improve.
Negative
He/She/It was not improving.
Negative
He/She/It will not improve.
Negative
He/She/It has not improved.
Present Perfect Continuous
Affirmative
He/She/It has been improving.
They have been improving.
Negative
I have not been improving.
You have not been improving.
We have not been improving.
He/She/It has not been improving.
You have not been improving.
They have not been improving.
Interrogative
Has he/she/it been improving?
Have they been improving?
Negative
He/She/It had not improved.
Affirmative
He/She/It had been improving.
Negative
I had not been improving.
You had not been improving.
We had not been improving.
He/She/It had not been improving.
You had not been improving.
They had not been improving.
Interrogative
Had he/she/it been improving?
Affirmative
He/She/It will have improved.
Negative
I will not have improved.
You will not have improved.
We will not have improved.
He/She/It will not have improved.
You will not have improved.
They will not have improved.
Interrogative
Will he/she/it have improved?
Negative
He/She/It would not improve.
Affirmative
He/She/It would have improved.
They would have improved.
Negative
I would not have improved.
You would not have improved.
We would not have improved.
He/She/It would not have improved.
You would not have improved.
They would not have improved.
Interrogative
Would he/she/it have improved?
Would they have improved?