▁modify ▁the ▁basic ▁meaning ▁of ▁the ▁verb . ▁ ▁In ▁T igr in ya ▁there ▁are ▁five ▁such ▁possibilities ▁( though ▁not ▁all ▁are ▁possible ▁for ▁each ▁verb ). ▁ ▁For ▁example , ▁the ▁verb ▁can ▁be ▁made ▁pass ive : ▁the ▁sense ▁' be ▁broken ' ▁is ▁derived ▁from ▁the ▁root ▁{ s br } ▁' break ' ▁with ▁the ▁addition ▁of ▁the ▁PA SS IVE ▁morph eme , ▁though ▁the ▁form ' s ▁actual ▁real ization ▁depends ▁on ▁choices ▁on ▁other ▁dimensions . ▁ ▁T ense / As pect / M ood ▁ ▁The ▁root ▁must ▁be ▁assigned ▁a ▁particular ▁basic ▁t ense / as pect / m ood ▁( T AM ). ▁ ▁In ▁T igr in ya ▁there ▁are ▁four ▁possibilities , ▁convention ally ▁referred ▁to ▁as ▁perfect , ▁imper fect , ▁j uss ive / imper ative , ▁and ▁ger und ive . ▁ ▁Once ▁a ▁lex ical ▁root , ▁possibly ▁alter ed ▁through ▁the ▁addition ▁of ▁a ▁deriv ational ▁element , ▁has ▁been ▁assigned ▁a ▁basic ▁T AM , ▁it ▁becomes ▁a ▁pron ounce able ▁stem , ▁though ▁still ▁not ▁a ▁complete ▁word . ▁ ▁For ▁example , ▁{ s br }+ PASS IVE ▁' be ▁broken ' ▁in ▁the ▁imper fect ▁becomes ▁s <0xC7> <0x9D> bb är ▁' is ▁broken '. ▁ ▁Con j ug ation ▁ ▁Sem it ic ▁ver bs ▁are ▁conjug ated ; ▁that ▁is , ▁they ▁agree ▁with ▁the ▁verb ' s ▁subject ▁in ▁person , ▁number , ▁and ▁gender . ▁