بزرگترین

In a sentence

• بزرگترین مشکل من پیدا کردن وقت آزاد است.

  My biggest problem is finding free time.

  Here, "بزرگترین" modifies "مشکل" (problem), indicating the greatest or most significant one among a set of potential problems.

• بزرگترین شهر ایران تهران است.

  The biggest city in Iran is Tehran.

  In this sentence, "بزرگترین" describes "شهر" (city), specifying it as the largest in size or population in the country.

• او بزرگترین دانش آموز کلاس خود بود.

  He/She was the oldest student in their class.

  Here, "بزرگترین" relates to "دانش آموز" (student), referring to being the oldest in terms of age within a group.