He is an alcoholic, and his life is very difficult.

He is a bungler, so he is not good at detailed work.

He publicly admitted that he is a bisexual.

He was an eyewitness to the incident.

This contract prohibits interference by a third party.

He is an excellent translator.

I forgot my username.

Many people who drive cars with the beginner's mark are cautious.

He is a renowned scientist who has made many discoveries.

Since he is still a green hand, he may make many mistakes.