However， not all advertising is about selling products and services for a profit.
【解析】该句表示的是部分否GDjuhLsDZD定原由网。not 与all, both, everyone, everybody, everythGDjuhLsDZDing, 以及every+名词连用.
Not ev原由网ery student goes home on Sunday.并非每个学生星期天都回家。
She doesn’t like both of the books. 她并非两本书都喜欢。
All man here are not honest原由网.
=Not all man here are honest.
这儿的人并非都诚实。
Both of the brothers don’t like the film
=Not both of the brothers like the film.
兄弟俩不都喜欢这部电影。
None of the man is honest.
他们都不诚实
Neither of the brothers likes the film.
兄弟俩都不喜欢这部电影。
