Nouns form the main part of the sentence.

He made a sentence using the accusative case.

The opposite angles of a quadrangle intersect each other.

The continental shelf plays an important role as a habitat for marine life.

In my school, there are physical education classes every day.

This area has active convection, causing frequent thunderstorms.

America is one of the big countries in the world.

I am planning to go to Thailand next week.

He is reading an ancient Greek epic.

Taisaku is my best friend.