Safety is the most important to us all．As teenagers，we must learn to protect ourselves．When we are at home，we should be careful when we use electricity【高分句型一，注意时间状语从句的使用】．Before answering the door，we first see whether he/she is a stranger【高分句型二，注意宾语从句的使用】【要点一，在家做什么】．On the way to school，we must pay special attention to the traffic and obey the rules in the street．We must always ride the bicycles on the right and stop when the lights are red．【要点二，在上学的路上应该做什么】When we are at school，we never run around the hallway．It is no good for us to fight with each other over small matters．【要点三，在学校应该做什么】 Safety is the most important to us all．As teenagers，we must learn to protect ourselves．When we are at home，we should be careful when we use electricity【高分句型一，注意时间状语从句的使用】．Before answering the door，we first see whether he/she is a stranger【高分句型二，注意宾语从句的使用】【要点一，在家做什么】．On the way to school，we must pay special attention to the traffic and obey the rules in the street．We must always ride the bicycles on the right and stop when the lights are red．【要点二，在上学的路上应该做什么】When we are at school，we never run around the hallway．It is no good for us to fight with each other over small matters．【要点三，在学校应该做什么】