This is the 3922nd most frequent Arabic word.
اننا
"Indeed we" or "Verily we."
The word 'أننا' is used here to emphasize 'we'. It is composed of 'أنّ' (meaning 'that') and 'نا' (the pronoun 'we') to stress the subject within the clause.
نحن نعلم أننا قادرون على تحقيق النجاح.
We know that we are capable of achieving success.
In this sentence, 'أننا' is used to introduce the subordinate clause affirming 'we work hard', combining 'أنّ' and 'نا' for clarity in meaning.
يبدي الجميع إعجابًا بحقيقة أننا نعمل بجد.
Everyone shows admiration for the fact that we work hard.
The usage of 'أننا' here indicates the realization of the manager about 'us making the necessary efforts', presenting the subject 'we' linked to the verb.