When the strong shaking occurred, we immediately evacuated.

He is not necessarily wrong.

He was so nervous that his hands stiffened.

He is a very patient person.

He is a person of great luck.

He always chooses strong characters in video games.

His accent gives power to his words.

Please close the window because the wind is strong.

He studied hard to pass the university entrance exam.

This is an old Japanese textbook that explains the usage of '變格' in detail.