كانا

In a sentence

• كانا يعملان في الحديقة.

  They were working in the garden.

  'كانا' is used for dual masculine subjects in the past tense and third person viewpoint.

• كانا ينتظران الحافلة.

  They were waiting for the bus.

  'كانا' denotes a continuous action performed by two people in the past.

• كانا سعيدين جداً بالأخبار.

  They were very happy about the news.

  'كانا' here is linking the subject (dual) to the adjective describing their state in the past.