use
The present participle is like English verbs that end in -ing. It’s used to show that two actions are taking place at the same time.
While working at Home Depot, she met a friend from high school.
Running through Garfield Park, they found the greenhouse in the center.
Sometimes the preposition en comes before the present participle:
formation
Form it by dropping the -ons ending from the nous form in the present tense and adding -ant. Present participles are invariable.
chanter (nous chantons) chantant
finir (nous finissons) finissant
lire (nous lisons) lisant
boire (nous buvons) buvant
suivre (nous suivons) suivant
commencer (nous commençons) commençant
manger (nous mangeons) mangeant
se laver (nous nous lavons) se lavant
Only three verbs, être, avoir and savoir, have irregular present participles.
irregular present participles
être: étant
avoir: ayant
savoir: sachant
Tout en + present participle is used to stress that two actions are simultaneous (and sometimes contradictory). Remember to make the liaison between tout and en.
Note that the English -ing forms are usually translated by an infinitive construction in French rather than a present participle. For example: