underpinned
past tense of underpin is underpinned.
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Underpin Past Tense
Underpin verb forms
| Infinitive | Present Participle | Past Tense | Past Participle |
|---|---|---|---|
| underpin | underpinning | underpinned | underpinned |
Conjugation of Underpin
| Simple / Indefinite Present Tense |
|---|
| He/She/It underpins . |
| I underpin. |
| You/We/They underpin. |
| Present Continuous Tense |
|---|
| He/She/It is underpinning. |
| I am underpinning. |
| You/We/They are underpinning. |
| Present Perfect Tense |
|---|
| He/She/It has underpinned. |
| I have underpinned. |
| You/We/They have underpinned. |
| Present Perfect Continuous Tense |
|---|
| He/She/It has been underpinning. |
| I have been underpinning. |
| You/We/They have been underpinning. |
| Simple Past Tense |
|---|
| He/She/It underpinned. |
| I underpinned. |
| You/We/They underpinned. |
| Past Continuous Tense |
|---|
| He/She/It was underpinning. |
| I was underpinning. |
| You/We/They were underpinning. |
| Past Perfect Tense |
|---|
| He/She/It had underpinned. |
| I had underpinned. |
| You/We/They had underpinned. |
| Past Perfect Continuous Tense |
|---|
| He/She/It had been underpinning. |
| I had been underpinning. |
| You/We/They had been underpinning. |
| Simple Future Tense |
|---|
| He/She/It will/shall underpin. |
| I will/shall underpin. |
| You/We/They will/shall underpin. |
| Future Continuous Tense |
|---|
| He/She/It will/shall be underpinning. |
| I will/shall be underpinning. |
| You/We/They will/shall be underpinning. |
| Future Perfect Tense |
|---|
| He/She/It will/shall have underpinned. |
| I will/shall have underpinned. |
| You/We/They will/shall have underpinned. |
| Future Perfect Continuous Tense |
|---|
| He/She/It will/shall have been underpinning. |
| I will/shall have been underpinning. |
| You/We/They will/shall have been underpinning. |