Past Tenses
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Deteriorate Past Tense

deteriorated
past tense of deteriorate is deteriorated.

Deteriorate verb forms

InfinitivePresent ParticiplePast TensePast Participle
deterioratedeterioratingdeteriorateddeteriorated

Conjugation of Deteriorate

Simple / Indefinite Present Tense
He/She/It deteriorates .
I deteriorate.
You/We/They deteriorate.

Present Continuous Tense
He/She/It is deteriorating.
I am deteriorating.
You/We/They are deteriorating.

Present Perfect Tense
He/She/It has deteriorated.
I have deteriorated.
You/We/They have deteriorated.

Present Perfect Continuous Tense
He/She/It has been deteriorating.
I have been deteriorating.
You/We/They have been deteriorating.

Simple Past Tense
He/She/It deteriorated.
I deteriorated.
You/We/They deteriorated.

Past Continuous Tense
He/She/It was deteriorating.
I was deteriorating.
You/We/They were deteriorating.

Past Perfect Tense
He/She/It had deteriorated.
I had deteriorated.
You/We/They had deteriorated.

Past Perfect Continuous Tense
He/She/It had been deteriorating.
I had been deteriorating.
You/We/They had been deteriorating.

Simple Future Tense
He/She/It will/shall deteriorate.
I will/shall deteriorate.
You/We/They will/shall deteriorate.

Future Continuous Tense
He/She/It will/shall be deteriorating.
I will/shall be deteriorating.
You/We/They will/shall be deteriorating.

Future Perfect Tense
He/She/It will/shall have deteriorated.
I will/shall have deteriorated.
You/We/They will/shall have deteriorated.

Future Perfect Continuous Tense
He/She/It will/shall have been deteriorating.
I will/shall have been deteriorating.
You/We/They will/shall have been deteriorating.

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