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    Learn Regular verbs Complain
Choose category
Conjugate
Infinitive
complain
Past simple
complained
Past participle
complained
Gerund
complaining
Conjugation of verb "To complain"
Present Simple
Affirmative
I complain.
You complain.
We complain.
He/She/It complains.
You complain.
They complain.
Negative
I do not complain.
You do not complain.
We do not complain.
He/She/It does not complain.
You do not complain.
They do not complain.
Interrogative
Do I complain?
Do you complain?
Do we complain?
Does he/she/it complain?
Do you complain?
Do they complain?


Present Simple Continuous
Affirmative
I am complaining.
You are complaining.
We are complaining.
He/She/It is complaining.
You are complaining.
They are complaining.
Negative
I am not complaining.
You are not complaining.
We are not complaining.
He/She/It is not complaining.
You are not complaining.
They are not complaining.
Interrogative
Am I complaining?
Are you complaining?
Are we complaining?
Is he/she/it complaining?
Are you complaining?
Are they complaining?


Past Simple
Affirmative
I complained.
You complained.
We complained.
He/She/It complained.
You complained.
They complained.
Negative
I did not complain.
You did not complain.
We did not complain.
He/She/It did not complain.
You did not complain.
They did not complain.
Interrogative
Did I complain?
Did you complain?
Did we complain?
Did he/she/it complain?
Did you complain?
Did they complain?


Past Continuous
Affirmative
I was complaining.
You were complaining.
We were complaining.
He/She/It was complaining.
You were complaining.
They were complaining.
Negative
I was not complaining.
You were not complaining.
We were not complaining.
He/She/It was not complaining.
You were not complaining.
They were not complaining.
Interrogative
Was I complaining?
Were you complaining?
Were we complaining?
Was he/she/it complaining?
Were you complaining?
Were they complaining?


Future Simple
Affirmative
I will complain.
You will complain.
We will complain.
He/She/It will complain.
You will complain.
They will complain.
Negative
I will not complain.
You will not complain.
We will not complain.
He/She/It will not complain.
You will not complain.
They will not complain.
Interrogative
Will I complain?
Will you complain?
Will we complain?
Will he/she/it complain?
Will you complain?
Will they complain?


Present Perfect Simple
Affirmative
I have complained.
You have complained.
We have complained.
He/She/It has complained.
You have complained.
They have complained.
Negative
I have not complained.
You have not complained.
We have not complained.
He/She/It has not complained.
You have not complained.
They have not complained.
Interrogative
Have I complained?
Have you complained?
Have we complained?
Has he/she/it complained?
Have you complained?
Have they complained?


Present Perfect Continuous
Affirmative
I have been complaining.
You have been complaining.
We have been complaining.
He/She/It has been complaining.
You have been complaining.
They have been complaining.
Negative
I have not been complaining.
You have not been complaining.
We have not been complaining.
He/She/It has not been complaining.
You have not been complaining.
They have not been complaining.
Interrogative
Have I been complaining?
Have you been complaining?
Have we been complaining?
Has he/she/it been complaining?
Have you been complaining?
Have they been complaining?


Past Perfect Simple
Affirmative
I had complained.
You had complained.
We had complained.
He/She/It had complained.
You had complained.
They had complained.
Negative
I had not complained.
You had not complained.
We had not complained.
He/She/It had not complained.
You had not complained.
They had not complained.
Interrogative
Had I complained?
Had you complained?
Had we complained?
Had he/she/it complained?
Had you complained?
Had they complained?


Past Perfect Continuous
Affirmative
I had been complaining.
You had been complaining.
We had been complaining.
He/She/It had been complaining.
You had been complaining.
They had been complaining.
Negative
I had not been complaining.
You had not been complaining.
We had not been complaining.
He/She/It had not been complaining.
You had not been complaining.
They had not been complaining.
Interrogative
Had I been complaining?
Had you been complaining?
Had we been complaining?
Had he/she/it been complaining?
Had you been complaining?
Had they been complaining?


Future Perfect
Affirmative
I will have complained.
You will have complained.
We will have complained.
He/She/It will have complained.
You will have complained.
They will have complained.
Negative
I will not have complained.
You will not have complained.
We will not have complained.
He/She/It will not have complained.
You will not have complained.
They will not have complained.
Interrogative
Will I have complained?
Will you have complained?
Will we have complained?
Will he/she/it have complained?
Will you have complained?
Will they have complained?


Conditional
Affirmative
I would complain.
You would complain.
We would complain.
He/She/It would complain.
You would complain.
They would complain.
Negative
I would not complain.
You would not complain.
We would not complain.
He/She/It would not complain.
You would not complain.
They would not complain.
Interrogative
Would I complain?
Would you complain?
Would we complain?
Would he/she/it complain?
Would you complain?
Would they complain?


Conditional Perfect
Affirmative
I would have complained.
You would have complained.
We would have complained.
He/She/It would have complained.
You would have complained.
They would have complained.
Negative
I would not have complained.
You would not have complained.
We would not have complained.
He/She/It would not have complained.
You would not have complained.
They would not have complained.
Interrogative
Would I have complained?
Would you have complained?
Would we have complained?
Would he/she/it have complained?
Would you have complained?
Would they have complained?