Step1Lead-inType1Type2commercialads(topersuadetobuy)PSAs(toteach)protectwaterprotectourselvesStep21
Whatdoadstrytopersuadepeopletodo
WhatdoPSAsaimtodo
Tobuyaproductorserviceortobelieveinanidea
Theyaimtoteachusandhelpusleadbetterlives
Fast-readingExpositorywriting(说明文)paragh1paragh2paragh3paragh4paragh5paragh1paragh2paragh3paragh4paragh5(A)(B)Step3DiscussthestructureofthetextPara
1briefintroductionofadsWhatisanad
untrueclaimsaboutproductspublicserviceadstheadviceonadsPara2Para3Para4Para5Step4Mainideaofeachparagraph1
Mostpeoplearenotawareofhowmanyadsarearoundthem
PSAsareonlyfoundinnewspapersandonTV
AnadwarningpeopleagainstsmokingisanexampleofaPSA
Commercialadscangiveusvaluableinformationabouthowtoliveourlives
PSAsandcommercialadsusesomeofthesamemethods
PSAsStep5TFFTTnotonlyTorFques