题目内容：

look at the ad .is says ,teacher (want) for weekend class .应适当形式

优质解答

如果是广告,则答案是：wanted.
因为广告可以不顾及句子的语法结构.
此处的want意思是“招聘”,所以teacher和want之间为被动关系,即“老师被招聘”,所以使用其过去分词wanted.
正常的句子应该是：A teacher is wanted 或 teachers are wanted.