Сравнительная степень
I'm younger than my brother. My sister is older than me. I'm shorter than my sister. My dad is taller than my mum. My family is bigger than my friend's.
Превосходная степень
My father is the oldest in my family. He is also the tallest. My mum is the kindest person I know. She is the best cook in our family. I'm the youngest in my family.
