- Abnormal behavior reflects he is in trouble.
- Criminal acts are a type of abnormal behavior.
- We were very surprised at his abnormal behavior.
- His abnormal behavior shows that something is wrong.
- With abnormal behavior, she is immersed in the recalling of the past days.
- Large amount of abnormal behaviors of animals occurr before strong earthquakes, and this is an important criterion to foreknowledge the occurrence of strong earthquakes.