Potentia conjuncta actui suo perfectior est quam non conjuncta: sed humana natura erit in beatis in maxima perfectione: ergo erunt ibi omnes sensus in suo actu.
Facta canam; sed erunt qui me finxisse loquantur=--I am about to sing of facts; but some will say I have invented them.
Non semper erunt Saturnalia=--The carnival will not last for ever.
Next of the Characters, or the different Circumstances, and Dispositions of the Persons: Si dicentis erunt fortunis absona dicta, Romani tollent Equites, Peditesque cachinnum.
The noun need not be in the dative, however: insigne documentum Sagunti ruinae erunt ne quis fidei Romanae aut societati confidat, Liv.
For example: Is not the rule, Si inoequalibus aequalia addas, omnia erunt inaequalia, an axiom as well of justice as of the mathematics?
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "erunt" in a variety of sentences. We hope that you will now be able to make sentences using this word.