请英语高手帮忙检查下这个句子有没有语病,

题目

请英语高手帮忙检查下这个句子有没有语病,
Red and yellow,which can give people strong impact,always use in dangerous places in order to warn people keep themselves from danger.

答案

有语病.use在这里应该使用被动语态.正确的句子应该是：Red and yellow,which can give people strong impact,are always used in dangerous places in order to warn people keep themselves from danger.