My room is on the second floor, and your room is above mine.

He raised his hand.

I'm spending the happiest days imaginable.

I am spending the happiest days of all.

Learning how to use past participles is important for understanding English.

He told the story using the past tense.

He learned the past tense in Japanese.

Please check the archives of the BBS.

This is a historic building.

He recognizes the importance of oral history.