That apartment is more modern than any apartments.
⇒ That is the most modern apartment.
My father finds playing board games interesting.
⇒ My father is interested in playing games.
My kitchen is smaller than yours.
⇒ Your kitchen isn't as small as mine.
I started playing soccer 5 years ago.
⇒ I have played soccer for 5 years.
Her book is not the same as mine.
⇒ Her book is different from mine.