jackknifed
The past tense of jackknife is jackknifed
The Forms of Jackknife
| Infinitive |
to jackknife |
| Present Tense |
jackknife / jackknifes |
| Past Tense |
jackknifed |
| Present Participle |
jackknifing |
| Past Participle |
jackknifed |
Conjugate Jackknife
Jackknife in Present Simple (Indefinite) Tense
| Singular |
Plural |
| I jackknife |
We jackknife |
| You jackknife |
You jackknife |
| He/She/It jackknifes |
They jackknife |
Jackknife in Present Continuous (Progressive) Tense
| Singular |
Plural |
| I am jackknifing |
We are jackknifing |
| You are jackknifing |
You are jackknifing |
| He/She/It is jackknifing |
They are jackknifing |
Jackknife in Present Perfect Tense
| Singular |
Plural |
| I have jackknifed |
We have jackknifed |
| You have jackknifed |
You have jackknifed |
| He/She/It has jackknifed |
They have jackknifed |
Jackknife in Present Perfect Continuous Tense
| Singular |
Plural |
| I have been jackknifing |
We have been jackknifing |
| You have been jackknifing |
You have been jackknifing |
| He/She/It has been jackknifing |
They have been jackknifing |
Jackknife in Past Simple (Indefinite) Tense
| Singular |
Plural |
| I jackknifed |
We jackknifed |
| You jackknifed |
You jackknifed |
| He/She/It jackknifed |
They jackknifed |
Jackknife in Past Continuous (Progressive) Tense
| Singular |
Plural |
| I was jackknifing |
We were jackknifing |
| You were jackknifing |
You were jackknifing |
| He/She/It was jackknifing |
They were jackknifing |
Jackknife in Past Perfect Tense
| Singular |
Plural |
| I had jackknifed |
We had jackknifed |
| You had jackknifed |
You had jackknifed |
| He/She/It had jackknifed |
They had jackknifed |
Jackknife in Past Perfect Continuous Tense
| Singular |
Plural |
| I had been jackknifing |
We had been jackknifing |
| You had been jackknifing |
You had been jackknifing |
| He/She/It had been jackknifing |
They had been jackknifing |
Jackknife in Future Simple (Indefinite) Tense
| Singular |
Plural |
| I will jackknife |
We will jackknife |
| You will jackknife |
You will jackknife |
| He/She/It will jackknife |
They will jackknife |
Jackknife in Future Continuous (Progressive) Tense
| Singular |
Plural |
| I will be jackknifing |
We will be jackknifing |
| You will be jackknifing |
You will be jackknifing |
| He/She/It will be jackknifing |
They will be jackknifing |
Jackknife in Future Perfect Tense
| Singular |
Plural |
| I will have jackknifed |
We will have jackknifed |
| You will have jackknifed |
You will have jackknifed |
| He/She/It will have jackknifed |
They will have jackknifed |
Jackknife in Future Perfect Continuous Tense
| Singular |
Plural |
| I will have been jackknifing |
We will have been jackknifing |
| You will have been jackknifing |
You will have been jackknifing |
| He/She/It will have been jackknifing |
They will have been jackknifing |
