(1) Prosocial behavior. Prosocial behavior: ① show sympathy and concern for those who encounter setbacks and misfortunes; (2) helping people in trouble and distress; ③ Ability to cooperate with peers; Willing to share with others in the face of interests.

(2) You can also participate in the service community; Donate money for the disaster area; Help the old, the weak, the sick and the disabled, and participate in voluntary labor; Participate in voluntary tree planting; Publicize fire prevention knowledge to residents; Go to nursing homes on holidays or weekends to accompany lonely old people and so on.

(3)① Participating in volunteer activities is an important way for us to repay the society. Participating in volunteer activities helps to increase our social knowledge, exercise our practical ability, cultivate excellent moral quality, develop pro-social behavior habits, and realize our life value in dedication. Participating in volunteer activities is conducive to carrying forward the national spirit of the Chinese nation. ④ Participating in volunteer activities is conducive to promoting social fairness and justice and building a harmonious socialist society. ⑤ We should learn the spirit of voluntary service and become a small volunteer who is willing to contribute to the society.