علينا

In a sentence

• علينا العمل الجاد لتحقيق الأهداف.

  We must work hard to achieve our goals.

  In this sentence, "علينا" is used to denote obligation or duty felt by the speaker and the group they are addressing.

• يجب علينا أن نتعاون لإنجاز المشروع.

  We must cooperate to complete the project.

  Here, "علينا" emphasizes the collective responsibility to achieve the mentioned task.

• إن المطر غزير، لذا علينا إحضار مظلة.

  The rain is heavy, so we must bring an umbrella.

  In this context, "علينا" implies the necessity or action required due to the situation described.