She is learning how to use adjectival nouns.

I want to learn how to use potential verbs.

He defeated the enemy using the technique of armor piercing.

The monk offered prayers every day at the temple.

She is learning how to use pronouns.

What is the main verb of this sentence?

He always behaves in a way that is a nuisance to those around him.

He is always causing a nuisance to those around him.

He lost everything.

She is planning a date with her current boyfriend.