He is majoring in history.

He has a deep interest in etymology.

He is an expert in dynamics, helping to solve complex problems in physics.

He is interested in the study of futurology.

He is good at geometry.

He is very interested in anatomy.

He understands the meaning of the proverb 'Teaching is half learning', which means that teaching leads to one's own learning.

Will you marry me?

"Do you want to have a meal? Take a bath? Or choose me?" she said jokingly.

She used to be a prostitute, but now she has started a new life.