你是高二新生么?这好象是英语书上有的.
1.Unlike a single advertisement,an ad campaign is an organized programme of advertisements using various kinds of ads to reach a particular audience.
2.In an ad campaign,you have will find many different kinds of media to send message to your target audience.
3.In order to determine your audience,you will need to do a little research.
4.However,wo still must be aware of the methods used in advertisements.