That event greatly changed his life.

The statute of limitations has already expired for that case.

He has already gone home.

He has already left the house.

This is the most difficult case I have ever faced.

He got involved in a love affair.

The Tiananmen Square incident is an important event in Chinese history.

The Marco Polo Bridge Incident was the trigger for the Sino-Japanese War.

The Jinan incident of 1928 was an important event in Chinese history.

He quoted the proverb 'Once a word leaves your mouth, you cannot chase it back even with the swiftest horse' to teach me to choose my words carefully.