851. The future stem of #sum#, _am_, is #er{o|e-}#: #erō#, #eri-s#,
#eri-t#, #eri-mus#, #eri-tis#, #eru-nt#. #dō# has #dabō#, #eō# has
#ībō#, and #queō# has #quībō#.
852. (1.) The future stem of verbs in #-ere# and #-īre# ends in #-a-# in
the first person singular, otherwise in #-ē-#, which becomes #-e-# in
some of the persons: as,
#rega-m#, #regē-s#, #rege-t#, #regē-mus#, #regē-tis#, #rege-nt#;
#capia-m#, #capiē-s#, &c.; #audia-m#, #audiē-s#, &c. The first person
singular is not a future form, but the subjunctive present, used with a
future meaning (842); forms in #-em# occur in manuscripts of Plautus:
as, #faciem#, #sinem#. Verbs in #-īre# sometimes have #-b{o|e-}#,
chiefly in the dramatists: as, #scībō#, #opperībo-r# (Plaut., Ter.),
#lēnību-nt# (Prop.); rarely verbs in #-ere# (819): as, #exsūgēbō#
(Plaut.). For #reddibō#, instead of the usual #reddam#, see 757.
853. (2.) The future stem of verbs in #-āre# and #-ēre# ends in
_-b{o|e-}_, which is preceded by a form ending in long #-ā-# or #-ē-#
respectively: as,
#laudābō#, #laudābi-s#, #laudābi-t#, #laudābi-mus#, #laudābi-tis#,
#laudābu-nt#. #monēbō#, #monēbi-s#, &c.