He told the story using the past tense.

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

He learned the past tense in Japanese.

Please check the archives of the BBS.

I am an Earthling.

We are searching for extraterrestrial life.

The process of terraforming is part of transforming other planets into a habitable environment for humans.

I am very interested in social science.

My brother is a graduate student at the University of Tokyo.

He is a world-renowned researcher.