【教材原句】 Welcome to senior high!欢迎来到高中!【要点必记】 be senior/junior to sb.比某人年龄大/小;比某人职位高/低a senior officer/manager/lecturer高级军官/高级经理/高级讲师a senior partner in a law firm律师事务所的主要合伙人 a senior post/position高级职务/职位