He is viewing that situation as a serious problem.

He views that situation as a problem.

He was planning a revenge against the friend who betrayed him.

This heated stone is perfect for warming the body.

There are many beautiful stalactites in this cave.

The envoy to Sui China was dispatched to deepen the exchange between Japan and China.

He likes to take a walk in the park at dusk.

A pronoun is a word used in place of a noun.

I can communicate with her telepathically.

He is suffering from symptoms of abulia.