Future tenses are formed by adding the suffix “ub” to the verb stem.  In third person singular and plural, add the verb ending after “ub.”  For example:
 

gimbub, I will find                               gimbub, we will find

gimbub, you will find                         gimbub, you (plural) will find

gimbubat, he-she-it will find               gimbubut, they will find

Vocabular

dulgat, to point

fulgat, to dwell

gashnat, to speak, to command

globat, to fool (someone)

gund, to stand

Translation Exercise
Translate the following sentences into Black Speech:

The men will gather               The beasts will find              The troll will rule

The warriors will stand         The Urûk-people will lure     The Nazgûl (sing.) will bring

I will call                                   You (sing.) will bind             The elves will rule

You (sing.) will devour              They will stand                      I will dwell

You (pl.) will speak                  They will fool                                    she will point

The trolls will speak                 the elves will kill                 the Nazgûl (pl.) will point

I will speak                               the elf will stand                      the beasts will dwell

Saruman will bring                    the trolls will find                the Urûk (plural) will devour