Verbs ending in -re or -r with past participles ending in -u

The verbs lire (to read) and boire (to drink) have past participles that end in -u. To create them, retain the first consonant of the verb only and add -U (lire → lu, boire → bu). The same goes for pouvoir → pu (to be able), savoir → su (to know), taire → tu (to keep quiet), and devoir → dû (to owe/ought to).
lire en
J'ai lu
Tu as lu
Il a lu/elle a lu
Nous avons lu
Vous avez lu
Ils ont lu/elles ont lu
boire en
J'ai bu
Tu as bu
Il a bu/elle a bu
Nous avons bu
Vous avez bu
Ils ont bu/elles ont bu
devoir en
J'ai dû
Tu as dû
Il a dû/elle a dû
Nous avons dû
Vous avez dû
Ils ont dû/elles ont dû
J’ai lu un très bon livre de Victor Hugo. I read a very good book by Victor Hugo.
Marcel et Muriel ont trop bu, ils ont mal à la tête. Marcel and Muriel drank too much. They both have a headache.

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