READ OUT LOUD. Choose which marked text you prefer to practice with - macrons or accent marks - and read the text out loud until you feel comfortable and confident. Then, try reading the unmarked text at the bottom. It should be easy for you after practicing with the marked texts. :-)
MACRONS. Here is the text with macrons:
Ōpilio reperiēns catulum lupī, domum tulit, eumque inter canēs ovium custōdēs aluit, quī ubī adolēvit, ovēs occīdere, canēsque, ut ūnā sēcum comederent, ēdocēre: Quod ōpilio animadvertēns, lupum quidem occīdit, canēs tamen ut ab ovium caede temperārent, nōn poterat prohibēre. Tunc pastor sēcum: Meritō plector, ut quī lupum canibus immiscuī, quī eōs ovēs occīdere docuit. Fābula indicat, bonōrum mōrēs, malōrum cōnsuetūdine corrumpī.
ACCENT MARKS. Here is the text with ecclesiastical accents, plus some color-coding for the words of three or more syllables (blue: penultimate stress; red: antepenultimate stress):
Opílio repériens cátulum lupi, domum tulit, eúmque inter canes óvium custódes áluit, qui ubi adolévit, oves occídere, canésque, ut una secum coméderent, edocére: Quod opílio animadvértens, lupum quidem óccidit, canes tamen ut ab óvium caede temperárent, non póterat prohibére. Tunc pastor secum: Mérito plector, ut qui lupum cánibus immíscui, qui eos oves occídere dócuit. Fábula índicat, bonórum mores, malórum consuetúdine corrúmpi.
UNMARKED TEXT. Here is the unmarked text - after practicing with the marked text that you prefer, you should not have any trouble with the unmarked text:
Opilio
reperiens catulum lupi,
domum tulit,
eumque
inter canes ovium custodes
aluit,
qui
ubi adolevit,
oves occidere,
canesque, ut una secum comederent,
edocere:
Quod opilio animadvertens,
lupum quidem occidit,
canes tamen
ut ab ovium caede temperarent,
non poterat prohibere.
Tunc pastor secum:
Merito plector,
ut
qui lupum canibus immiscui,
qui eos oves occidere docuit.
Fabula indicat,
bonorum mores,
malorum consuetudine corrumpi.
IMAGE. Here is an illustration for the story (image source) showing a wolf cub... remember: he only looks harmless:
