No. 1 in French
de
"De" in French means "of" or "from" in English.
In a sentence
Il a besoin de sommeil.
He needs sleep.
Here, 'de' introduces the noun 'sommeil' following the phrase 'avoir besoin de', which traditionally pairs with 'de' to specify the requirement.
Ce livre est plein de mystères.
This book is full of mysteries.
'De' is used to indicate the contents (mysteries) of the adjective 'plein' (full).
Je voudrais une tasse de thé.
I would like a cup of tea.
The usage of 'de' links the noun 'tasse' (cup) with the content it holds ('thé', tea), representing composition or containment.
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