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01
un, une
used when we want to talk about a person or thing for the first time or when other people may not know who or what they are
Exemples
She bought a new book yesterday.
Elle a acheté un nouveau livre hier.
1.1
un, une
used before a singular noun to refer to someone or something that is not specifically identified
Exemples
I need a pen to sign this form.
Il a un problème qui doit être résolu.
02
un, une
used to show someone or something belongs to a group or type
Exemples
He is a member of a sports club.
Il est un membre d'un club de sport.
A
01
la note la, le la
the musical pitch A, which is a specific note in the diatonic scale commonly used in Western music
informations grammaticales
statut d’animéité
inanimé
composition morphologique
simple
dénombrable
singular
not gender specific
propre
forme plurielle
A's
02
ångström, unité de longueur égale à un dix milliardième de mètre
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
03
un, le groupe sanguin A
the blood group whose red cells carry the A antigen
04
la première lettre de l'alphabet romain, la lettre A
the 1st letter of the Roman alphabet
05
adénine, un des quatre nucléotides utilisés dans la construction de l'ADN
one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
06
adénine, base purique trouvée dans l'ADN et l'ARN
(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
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