His behavior is outrageous.

I think his behavior is outrageous.

Metalinguistics is an important concept in linguistics.

Natural language processing is the technology that allows computers to understand and generate human language.

He is good at writing programs in high-level languages.

Low-level languages can directly access the hardware.

He can speak Japanese fluently.

He is good at speaking Spanish.

He likes to learn new words.

He is attending a programming school to learn object-oriented languages.