I was disappointed after seeing his performance.

I couldn't understand his actions.

He started to act immediately.

The birds are soaring in the sky.

The bird is soaring in the sky.

I was disappointed by his petty behavior.

He is very strict with his servant girls and concubines.

He was devastated by deep grief.

He was deeply grieving over the death of his friend.

Amorphous substances have characteristics different from crystals.