passat

In a sentence

• El passat estiu va fer molta calor.

  Last summer it was very hot.

  Here, 'passat' is an adjective describing summer, meaning 'last' or 'previous.'

• El passat de la història és fascinant.

  The past of history is fascinating.

  Here, 'passat' is a noun referring to the historical past.

• He passat per davant de casa teva avui.

  I passed by your house today.

  Here, 'passat' is part of the verb phrase 'he passat,' which means 'I have passed,' from the verb 'passar,' conjugated in the present perfect tense.