Studying Old Norse helps to deeply understand the history of the Vikings.

He is suffering from aphasia as a sequelae of stroke.

She spoke using an ideophone that expresses sadness.

I am interested in learning Serbo-Croatian.

He remained silent and didn't say anything.

Learning homonyms in Japanese is difficult.

He is good at speaking Chinese.

He can speak Teochew language.

Learning how to use enclitics helps deepen your understanding of Japanese.

Understanding the concept of 'Ha-line conversion sounds' is important in learning Japanese.