Free conjugation exercises for English language learners

stiffen

Regular

Change speaker

You're listening to Joanna
She has an American accent and expects you to use American spelling.

Simple

Continuous

Perfect

Perfect continuous

Past

I stiffened
you stiffened
he/she/it stiffened
we stiffened
you stiffened
they stiffened

Present

I stiffen
you stiffen
he/she/it stiffens
we stiffen
you stiffen
they stiffen

Future

I will stiffen
you will stiffen
he/she/it will stiffen
we will stiffen
you will stiffen
they will stiffen

Past

I was stiffening
you were stiffening
he/she/it was stiffening
we were stiffening
you were stiffening
they were stiffening

Present

I am stiffening
you are stiffening
he/she/it is stiffening
we are stiffening
you are stiffening
they are stiffening

Future

I will be stiffening
you will be stiffening
he/she/it will be stiffening
we will be stiffening
you will be stiffening
they will be stiffening

Past

I had stiffened
you had stiffened
he/she/it had stiffened
we had stiffened
you had stiffened
they had stiffened

Present

I have stiffened
you have stiffened
he/she/it has stiffened
we have stiffened
you have stiffened
they have stiffened

Future

I will have stiffened
you will have stiffened
he/she/it will have stiffened
we will have stiffened
you will have stiffened
they will have stiffened

Past

I had been stiffening
you had been stiffening
he/she/it had been stiffening
we had been stiffening
you had been stiffening
they had been stiffening

Present

I have been stiffening
you have been stiffening
he/she/it has been stiffening
we have been stiffening
you have been stiffening
they have been stiffening

Future

I will have been stiffening
you will have been stiffening
he/she/it will have been stiffening
we will have been stiffening
you will have been stiffening
they will have been stiffening

{"verb":"stiffen","type":"Regular","conjugation":{"Simple":{"Past":["I stiffened","you stiffened","he\/she\/it stiffened","we stiffened","you stiffened","they stiffened"],"Present":["I stiffen","you stiffen","he\/she\/it stiffens","we stiffen","you stiffen","they stiffen"],"Future":["I will stiffen","you will stiffen","he\/she\/it will stiffen","we will stiffen","you will stiffen","they will stiffen"]},"Continuous":{"Past":["I was stiffening","you were stiffening","he\/she\/it was stiffening","we were stiffening","you were stiffening","they were stiffening"],"Present":["I am stiffening","you are stiffening","he\/she\/it is stiffening","we are stiffening","you are stiffening","they are stiffening"],"Future":["I will be stiffening","you will be stiffening","he\/she\/it will be stiffening","we will be stiffening","you will be stiffening","they will be stiffening"]},"Perfect":{"Past":["I had stiffened","you had stiffened","he\/she\/it had stiffened","we had stiffened","you had stiffened","they had stiffened"],"Present":["I have stiffened","you have stiffened","he\/she\/it has stiffened","we have stiffened","you have stiffened","they have stiffened"],"Future":["I will have stiffened","you will have stiffened","he\/she\/it will have stiffened","we will have stiffened","you will have stiffened","they will have stiffened"]},"Perfect continuous":{"Past":["I had been stiffening","you had been stiffening","he\/she\/it had been stiffening","we had been stiffening","you had been stiffening","they had been stiffening"],"Present":["I have been stiffening","you have been stiffening","he\/she\/it has been stiffening","we have been stiffening","you have been stiffening","they have been stiffening"],"Future":["I will have been stiffening","you will have been stiffening","he\/she\/it will have been stiffening","we will have been stiffening","you will have been stiffening","they will have been stiffening"]}}}