The coexistence of humans and nature is important for the sustainability of the Earth.

The presenter explained the results in detail.

In physics, blackbody radiation is a very important concept.

I will report on the project tomorrow.

He has already finished writing the report, so we use the present perfect form.

She is learning the grammar of the present progressive form.

This mineral is called ulexite and has special optical properties.

Modern society classes are important for a deep understanding of history and contemporary society.

He is infatuated with the new game.

This anime depicts a classic story in a modern parody.