'Project Hope - educating every child'. There are even PSAs to teach us how to live healthy lives\s\up1(39(39). One of these is, 'When you smoke cigarettes\s\up1(40(40)， you are slowly killing yourself.' All of these ads are meant to benefit\s\up1(41(41) the public, and you can often learn a lot by following the advice they give\s\up1(42(42).

　　Finally, I wish to tell you this: \s\up1(43(43)think about why you should do the things the ad suggests, or buy the product or service the ad promotes\s\up1(44(44). When it comes to advertisements\s\up1(45(45)， we must all use our intelligence\s\up1(46(46) and not be a slave\s\up1(47(47) to them！

　　\s\up1(31(31)though 此处用作副词，意为"然而，不过"，常置于句末。

　　not和表示整体意义的all连用，表示部分否定。

　　\s\up1(32(32)aim/eIm/vt.& vi.以......为目标；瞄准 n．目的，目标

　　aim to do 打算做某事；旨在......

　　\s\up1(33(33)nationwide/ˌneIʃn'waId/adj.& adv.全国范围的(地)，全国性的(地)　worldwide adj.全世界范围内的

　　\s\up1(34(34)campaign/kæm'peIn/n.运动(为了某种目的而进行的一系列有计划的活动)

　　\s\up1(35(35)drug/drʌɡ/n.毒品；药，药物

　　\s\up1(36(36)deal with涉及，关于；处理；应付

　　\s\up1(37(37)encourage sb. to do sth.鼓励某人做某事

　　\s\up1(38(38)motto/'mɒtəʊ/n.座右铭；格言，箴言

　　\s\up1(39(39)to teach ...为不定式短语作PSAs的定语， how to ...为"疑问词＋不定式"作teach的宾语。

　　\s\up1(40(40)cigarette/'sIɡə'ret/n.香烟，卷烟

　　\s\up1(41(41)benefit/'benIfIt/vt.& vi.使受益；得益于n.益处；救济金；奖金　　　benefit from 从......中受益

　　for the benefit of ... 为了......的利益

　　\s\up1(42(42)they give是省略了关系代词that或which的定语从句，修饰advice。因为关系词在从句中作give的宾语，所以可以省略。

　　\s\up1(43(43)句中why引导宾语从句，the ad suggests为定语从句，修饰things，the ad promotes为定语从句，修饰product or service。

　　 \s\up1(44(44)promote/prə'məʊt/vt.推广，宣传；促销；促进，推动

　　\s\up1(45(45)when it comes to ... 当涉及......，当谈到......

　　\s\up1(46(46)intelligence/In'telIdʒəns/n.智力，才智；情报

　　\s\up1(47(47)slave/sleIv/n.完全受......控制的人；奴隶

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