It is a verb that has two different stems but is conjugated with the same endings as regular -er verbs. Stem-changing verbs are sometimes also called boot verbs or shoe verbs because if you circle the forms that have stem changes in the conjugation table below, the resulting shape looks like a boot or shoe.

What type of verb is acheter?

Lesson Summary

The verb acheter means 'to buy,' and it's an irregular -er verb. To conjugate it correctly, add a grave accent in the je, tu, il/elle/on, and ils/elles forms.

What are boot verbs in French?

Stem-changing verbs or boot verbs are regular verbs whose root (radical)'s spelling changes in certain conjugations and with certain subjects. Stem-changing verbs end in -yer; or in é +consonant + -er; or with e + consonant + -er. Verbs ending in -eter or in -eler also change stems.