Another group of irregular verbs in the Future Tense are those verbs with completely irregular stems:

decir (example sentences)(full conjugation)

   
yo
   
diré
   
(I will say)


   
tú
   
dirás
   
(you will say)


   
Ud./él/ella
   
dirá
   
(you/he/she will say)


   
nosotros (as)
   
diremos
   
(we will say)


   
vosotros (as)
   
diréis
   
(you guys will say)


   
Uds./ellos/ellas
   
dirán
   
(you all/they will say)

hacer (example sentences)(full conjugation)

   
yo
   
haré
   
(I will do)


   
tú
   
harás
   
(you will do)


   
Ud./él/ella
   
hará
   
(you/he/she will do)


   
nosotros (as)
   
haremos
   
(we will do)


   
vosotros (as)
   
haréis
   
(you guys will do)


   
Uds./ellos/ellas
   
harán
   
(you all/they will do)