He is really knowledgeable and always teaches us new information.

He found out the truth and was surprised.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

A feeling of sympathy for his tragic fate, a kind of 'hangan biiki', welled up.

She is planning a date with her current boyfriend.

He lost everything.

My boyfriend gave me a gift.

Everyone was surprised by the news.

He knows that pain through his own experience.

He is feigning ignorance about that problem.