Languages › French How to Conjugate the Regular French Verb 'Acheter' ('To Buy') A Stem-Changing Verb Share Flipboard Email Print Daly and Newton French Grammar Pronunciation & Conversation Vocabulary Resources For Teachers by ThoughtCo Updated February 02, 2019 'Achete' ("to buy") is a very common French stem-changing verb. 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. The Actual Stem Change For the present tense of verbs that end in -e_er ( _ indicates one or more consonants), the stem change consists of changing the e before that consonant to è in all forms but nous and vous. See this happen in the table below. Stem changes are not limited to the present tense; they occur across several French tenses and moods, as shown in the table below. Note that the table below has only the simple conjugations of the verb acheter; it does not include the compound tenses, which consist of a form of the auxiliary verb and the past participle. Common '-e_er' Stem-Changing Verbs acheter > to buy amener > to take emmener > to take enlever > to remove geler > to freeze harceler > o harass lever > to lift, raise mener > to lead peler > to peel peser > to weigh promener > to walk Other than acheter, geler, harceler and peler, most verbs that end in -eler and -eter are part of a different stem-change group that includes -eler verbs and -eter verbs. Verbs that end in -é_er have a similar stem change. For the present tense of verbs that end in -é_er, the stem change consists of changing é to è in all forms but nous and vous, as in the following example: je considère nous considérons tu considères vous considérez il considère ils considèrent Common '-é_er' Stem-Changing Verbs céder > to give up, dispose of célébrer > to celebrate compléter > to complete considérer > to consider différer > to differ espérer > to hope exagérer* > to exaggerate gérer > to manage inquiéter > to worry modérer > to moderate pénétrer > to enter posséder > to possess préférer > to prefer protéger* > to protect refléter > to reflect répéter > to repeat révéler > to reveal suggérer > to suggest zébrer > to stripe*These are also spelling change verbs. Verbs that end in -e_er have a similar stem change. For -e_er verbs and -é_er verbs, the penultimate e takes on or changes to è. Simple Conjugations of the French Stem-Changing Verb 'Acheter' Present Future Imperfect Present participle j' achète achèterai achetais achetant tu achètes achèteras achetais il achète achètera achetait nous achetons achèterons achetions vous achetez achèterez achetiez ils achètent achèteront achetaient Passé composé Auxiliary verb avoir Past participle acheté Subjunctive Conditional Passé simple Imperfect subjunctive j' achète achèterais achetai achetasse tu achètes achèterais achetas achetasses il achète achèterait acheta achetât nous achetions achèterions achetâmes achetassions vous achetiez achèteriez achetâtes achetassiez ils achètent achèteraient achetèrent achetassent Imperative tu achète nous achetons vous achetez Continue Reading How to Conjugate -E_ER - French Verbs Overview of French Stem-Changing Verbs How to Conjugate the Stem-Changing French Verb 'Envoyer' ('to Send') How to Conjugate the French Stem-Changing Verb 'Épeler' Learn How to Conjugate "Répéter" (to Repeat) in French Here's How to Conjugate "Posséder" (to Possess) in French Learn to Conjugate the French Verb "Nettoyer" Simple Conjugations for the French Verb "Appeler" Complete Your Knowledge of Speaking French With Verb Conjugation Conjugating Regular French Verbs in the Subjunctive Here's How to Say "Shared" and "Sharing" in French Have "Hope" That You'll Learn How to Conjugate "Espérer" How to Conjugate Regular -RE Verbs in French How to Conjugate the Verb "Skier" ("to Ski")? Conjugating the French Verb "Considérer" (to Consider) Learn to Say "I Influenced" in French Using "Influencer"