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présent de l'indicatif

je dois	I must
tu dois	you must
il doit	he must
elle doit	she must
nous devons	we must
vous devez	you must
ils doivent	they must
elles doivent	they must

Line 2 / 15

imparfait de l'indicatif

je devais	I should have
tu devais	you should have
il devait	he should have
elle devait	she should have
nous devions	we should have
vous deviez	you should have
ils devaient	they should have
elles devaient	they should have

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passé simple

je dus	I owed
tu dus	you owed
il dut	he owed
elle dut	she owed
nous dûmes	we owed
vous dûtes	you owed
ils durent	they owed
elles durent	they owed

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futur

je devrai	I will have to
tu devras	you will have to
il devra	he will have to
elle devra	she will have to
nous devrons	we will have to
vous devrez	you will have to
ils devront	they will have to
elles devront	they will have to

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conditionnel

je devrais	I would
tu devrais	you would
il devrait	he would
elle devrait	she would
nous devrions	we would
vous devriez	you would
ils devraient	they would
elles devraient	they would

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présent du subjonctif

je doive	I would have to
tu doives	you would have to
il doive	he would have to
elle doive	she would have to
nous devions	we would have to
vous deviez	you would have to
ils doivent	they would have to
elles doivent	they would have to

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imparfait du subjonctif

je dusse	I would have had to
tu dusses	you would have had to
il dût	he would have had to
elle dût	she would have had to
nous dussions	we would have had to
vous dussiez	you would have had to
ils dussent	they would have had to
elles dussent	they would have had to

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passé composé

j'ai dû	I had to
tu as dû	you had to
il a dû	he had to
elle a dû	she had to
nous avons dû	we had to
vous avez dû	you had to
ils ont dû	they had to
elles ont dû	they had to

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plus-que-parfait de l'indicatif

j'avais dû	I had had to
tu avais dû	you had had to
il avait dû	he had had to
elle avait dû	she had had to
nous avions dû	we had had to
vous aviez dû	you had had to
ils avaient dû	they had had to
elles avaient dû	they had had to

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passé antérieur

j'eus dû	I had to
tu eus dû	you had to
il eut dû	he had to
elle eut dû	she had to
nous eûmes dû	we had to
vous eûtes dû	you had to
ils eurent dû	they had to
elles eurent dû	they had to

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futur antérieur

j'aurai dû	I will have had to
tu auras dû	you will have had to
il aura dû	he will have had to
elle aura dû	she will have had to
nous aurons dû	we will have had to
vous aurez dû	you will have had to
ils auront dû	they will have had to
elles auront dû	they will have had to

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conditionnel passé

j'aurais dû	I would have had to
tu aurais dû	you would have had to
il aurait dû	he would have had to
elle aurait dû	she would have had to
nous aurions dû	we would have had to
vous auriez dû	you would have had to
ils auraient dû	they would have had to
elles auraient dû	they would have had to

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passé du subjonctif

j'aie dû	I were to have owed
tu aies dû	you were to have owed
il ait dû	he were to have owed
elle ait dû	she were to have owed
nous ayons dû	we were to have owed
vous ayez dû	you were to have owed
ils aient dû	they were to have owed
elles aient dû	they were to have owed

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plus-que-parfait du subjonctif

j'eusse dû	I were to have had to
tu eusses dû	you were to have had to
il eût dû	he were to have had to
elle eût dû	she were to have had to
nous eussions dû	we were to have had to
vous eussiez dû	you were to have had to
ils eussent dû	they were to have had to
elles eussent dû	they were to have had to

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impératif

Dois!	You must! [familiar]
Devons!	We must!
Devez!	You must! [plural/formal]

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Infinitive - devoir - "owe", "must", "ought", "have to", "should" - irregular verb

Present participle - devant

Past participle - dû (due)

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