Je doive
I must
Tu doives
You must
Il/elle doive
He/she must
Nous devions (der -vee-yon)
We must
Vous deviez (der -vee-yeh)
You must
Ils/elles doivent
They must
J’aie dû
I had to
Tu aies dû
You had to
Il/elles ait dû
He/she had to
Nous ayons dû
We had to
Vous ayez dû
You had to
Ils/elles aient dû
They had to