Bonjour
a- He worked very hard last week
- He didn't work very hard last week.
- Did he work very herd last week ?
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b- He came back from the US in 1999.
- He didn't come back from the US in 1999.
- Did he come back from the US in 1999.
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Aux formes interrogatives et négatives, on utilise le prétérit de l'auxiliaire "DO" qui est "DID". Le verbe n'est plus conjugué et reste dans sa Base Verbale.
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bonne journée ☺☺☺
