The system of provinces was a part of the ancient political system in Japan.

He is still under 20 years old.

Transitive verbs require an object that is directly moved by the subject.

He lost everything.

She is planning a date with her current boyfriend.

My boyfriend gave me a gift.

Everyone was surprised by the news.

He always acts as if it's someone else's concern.

He passionately discussed the problem of other minds in his philosophy class.

He made a decision taking into account various other circumstances.