2015
高考英语北师大版一轮复习:book 4 unit 11(讲解及解析答案2) 1 however,not all advertising is about selling products and services for a profit.然而,并非所有的广告都是为了赢利而推销商品和服务的。句型公式:not all... not all...=all...not表示部分否定,也称半否定。具有总括意义的代词each,everybody,everything,all,both等、形容词complete,whole等和副词completely,always,wholl