Mr. Iwaishi is my best friend.

His hobby is collecting loose stones.

He has a deep interest in archaeology.

What do you say this sentence in Japanese?

This is my portion.

This joist is very important for supporting the structure of the house.

I was bitten by a mosquito and it's itchy.

Please cut this pizza in half.

The Tenbun era was a very important period in Japanese history.

A participle is a part of grammar where verbs and adjectives change into nouns or adjectives.